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Journal articles on the topic 'Middle Jurassic'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

LUKASHEVICH, ELENA D. "Limoniidae (Diptera) in the Upper Jurassic of Shar Teg, Mongolia." Zoosymposia 3, no. 1 (2009): 131–54. http://dx.doi.org/10.11646/zoosymposia.3.1.12.

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A diverse Late Jurassic crane fly assemblage is described from Shar Teg locality (SW Mongolia), viz. Architipula krzeminskii n.sp., A. ampla n.sp., Mesotipula sigmoidea n.sp., ?M. brevicella n.sp., M. (Metatipula n.subgen.) continens n.sp., Tipunia undata n.sp., T. jorgi n.sp., Cretolimonia jurassica n.sp., C. pygmaea n. sp., Eotipulina sharategica n.sp., E. paula n.sp., E. evidens n.sp. and Eotipuloptera sp. The genus Praearchitipula Kalugina, 1985 is transferred to Pediciidae; it is the first Mesozoic record of this family (Middle Jurassic of Siberia). One species originally included in Prae

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Shi, Lu, Nan Ju, Yuhui Feng, Changqing Zheng, Yue Wu, and Xin Liu. "Petrogenesis and Tectonic Setting of the Early and Middle Jurassic Granitoids in the Chaihe Area, Central Great Xing’an Range, NE China." Minerals 13, no. 7 (2023): 917. http://dx.doi.org/10.3390/min13070917.

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To ascertain the Early-to-Middle Jurassic tectonic setting in the central Great Xing’an Range, this study investigated the Early and Middle Jurassic granitoids exposed in the Chaihe area in the central Great Xing’an Range based on isotopic chronology and petrogeochemistry. The results of this study show that the Early and Middle Jurassic granitoids have emplacement ages of 179–172 Ma. Moreover, the Early and Middle Jurassic granitoids are high-K calc-alkaline unfractionated I-type granitoids and high-K calc-alkaline fractionated I-type granitoids, respectively. The magma sources of the Early a

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3

Riccardi, Alberto C., Susana E. Damborenea, Miguel O. Manceñido, and Sara C. Ballent. "Middle Jurassic Biostratigraphyof Argentina." Geobios 27 (December 1994): 423–30. http://dx.doi.org/10.1016/s0016-6995(94)80163-0.

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4

XI-JIN, ZHAO, ROGER B. J. BENSON, STEPHEN L. BRUSATTE, and PHILIP J. CURRIE. "The postcranial skeleton ofMonolophosaurus jiangi(Dinosauria: Theropoda) from the Middle Jurassic of Xinjiang, China, and a review of Middle Jurassic Chinese theropods." Geological Magazine 147, no. 1 (2009): 13–27. http://dx.doi.org/10.1017/s0016756809990240.

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AbstractThe Middle Jurassic was a critical time in the evolution of theropod dinosaurs, highlighted by the origination and radiation of the large-bodied and morphologically diverse Tetanurae. Middle Jurassic tetanurans are rare but have been described from Europe, South America and China. In particular, China has yielded a number of potential basal tetanurans, but these have received little detailed treatment in the literature. Here we redescribe the postcranial skeleton of one of the most complete Chinese Middle Jurassic theropods,Monolophosaurus. Several features confirm the tetanuran affini

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5

DRUCKENMILLER, PATRICK S., and ERIN E. MAXWELL. "A Middle Jurassic (Bajocian) ophthalmosaurid (Reptilia, Ichthyosauria) from the Tuxedni Formation, Alaska and the early diversification of the clade." Geological Magazine 151, no. 1 (2013): 41–48. http://dx.doi.org/10.1017/s0016756813000125.

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AbstractOphthalmosauridae is a clade of derived thunniform ichthyosaurs that are best known from Callovian (late Middle Jurassic) to Cenomanian-aged (Late Cretaceous) deposits in both the Northern and Southern Hemispheres. Ophthalmosaurids arose prior to the Early–Middle Jurassic boundary, however, very little is known about their diversity and distribution in the earliest phase of their evolutionary history during the Aalenian–Bathonian (Middle Jurassic) interval. Here we describe new diagnostic ophthalmosaurid material from the Early Bajocian (Middle Jurassic) of Alaska. The specimen, UAMES

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ZHANG, KUIYAN, JINHUA LI, DING YANG, and DONG REN. "A new species of Archirhagio Rohdendorf, 1938 from the Middle Jurassic of Inner Mongolia of China (Diptera: Archisargidae)." Zootaxa 1984, no. 1 (2009): 61–65. http://dx.doi.org/10.11646/zootaxa.1984.1.4.

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The small genus Archirhagio Rohdendorf is an extinct Jurassic group of brachyceran flies. So far, only two known species have been found in the Middle/Upper Jurassic of Karatau (Kazakhstan) and the Middle Jurassic of Daohugou (Inner Mongolia, China) respectively. In this paper, a new species from the Middle Jurassic of Daohugou is described. A key to the species of the genus Archirhagio is given.

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7

Sajjadi Hezaveh, Freshteh, Firoozeh Hashemi Yazdi, Ali Khazaei, Navid Navidi-Izad, and Mohammad Taghi Badihagh. "Palynology of the Middle Jurassic strata from the Alborz Ranges, northwestern Iran." Boletín de la Sociedad Geológica Mexicana 77, no. 1 (2025): A141124. https://doi.org/10.18268/bsgm2025v77n1a141124.

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Palynomorphs are used for palynostratigraphy, and to derive paleoecological and paleobiogeographical inferences from the Middle Jurassic Shemshak Formation, Alborz Ranges, northwestern Iran. The rock unit contains diverse, reasonably preserved palynofloras dominated by miospores and dinoflagellate cysts. Vertical distribution of miospores allows for the introduction of Klukisporites variegatus -Striatella spp.- Contignisporites burgeri assemblage zone in the host strata. The presence of such key miospore species as Striatella jurassica, S. patenii, S. seebergensis, and Contignisporites burgeri

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8

Wang, Ping Li, Da Wei Lv, Hai Yan Liu, Xue Zheng, and Yu Lin Lv. "Migration Law of Mesozoic Qaidam Basin Depocenters." Advanced Materials Research 524-527 (May 2012): 63–66. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.63.

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According to stratigraphy and distribution features of the Qaidam Basin, and further the formation and migration of it’s depocenters, it is considered that the Middle-Upper Triassic were mainly sags scattered among the Qilian Mountains, the Alabasitao Mountains and the Kunlun Mountains; the Early Jurassic depocenters were located mainly in Lenghu depression and Yiliping sag at the northwest of the basin; several Middle Jurassic depocenters distributed from the northwest to the southeast of the basin along Sertengshan-Yuqia near front of the Qilian mountains; the Late Jurassic-Cretaceous depoce

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9

Xu, Zhongjie, Jintao Kong, Rihui Cheng, and Liaoliang Wang. "U–Pb dating of detrital zircons in the eastern Guangdong Basin, South China, and constraints on the tectonic transformation from the Early to Middle Jurassic." Canadian Journal of Earth Sciences 57, no. 4 (2020): 477–93. http://dx.doi.org/10.1139/cjes-2019-0050.

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Controversies exist regarding the mechanism of formation of basins located on the continental margin of South China as well as when they formed. It was ascertained based on clastic petrology, geochemical analysis, and zircon U–Pb dating that the sedimentary provenances in the eastern Guangdong Basin are mainly felsic igneous rocks from the late Early Jurassic to the Middle Jurassic. The late Early Jurassic Qiaoyuan Formation mainly shows major age peaks at approximately 238 Ma, 259 Ma, and 1858 Ma, and the Middle Jurassic Tangxia Formation shows major age peaks at approximately 169 Ma and 172

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10

Ahmad, Fayez. "Middle Jurassic brachiopod faunas from Northwestern Jordan." Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 2000, no. 5 (2000): 301–13. http://dx.doi.org/10.1127/njgpm/2000/2000/301.

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11

Damborenea, Susana E. "Middle Jurassic inoceramids from Argentina." Journal of Paleontology 64, no. 5 (1990): 736–59. http://dx.doi.org/10.1017/s0022336000018965.

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Extensive collections from stratigraphically controlled sections allow reassessment and systematic revision of Middle Jurassic inoceramids from Argentina. Two species are doubtfully referred to Parainoceramus Voronetz, including P.? westermanni n. sp. Five species of Retroceramus Koshelkina, including R. cf. R. marwicki (Speden), R. patagonicus (Philippi) and R. stehni n. sp., are present. The Bajocian–early Callovian species of Retroceramus show strong affinities with Aalenian–Bathonian inoceramids from the Northern Hemisphere, and also with the South Pacific forms of the galoi–haasti group o

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12

Michelsen, Olaf, Lars H. Nielsen, Peter N. Johannessen, Jan Andsbjerg, and Finn Surlyk. "Jurassic lithostratigraphy and stratigraphic development onshore and offshore Denmark." Geological Survey of Denmark and Greenland (GEUS) Bulletin 1 (October 28, 2003): 145–216. http://dx.doi.org/10.34194/geusb.v1.4651.

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A complete updated and revised lithostratigraphic scheme for the Jurassic succession of the onshore and offshore Danish areas is presented together with an overview of the geological evolution. The lithostratigraphies of Bornholm, the Danish Basin and the Danish Central Graben are described in ascending order, and a number of new units are defined. On Bornholm, the Lower–Middle Jurassic coal-bearing clays and sands that overlie the Lower Pliensbachian Hasle Formation are referred to the new Sorthat Formation (Lower Jurassic) and the revised Bagå Formation (Middle Jurassic). In the southern Dan

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13

TONG, HAIYAN, ERIC BUFFETAUT, and VARAVUDH SUTEETHORN. "Middle Jurassic turtles from southern Thailand." Geological Magazine 139, no. 6 (2002): 687–97. http://dx.doi.org/10.1017/s0016756802006805.

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A new genus and species of primitive cryptodiran turtle, Siamochelys peninsularis n. g. n. sp., from the Middle Jurassic Mab Ching locality, in the southern peninsula of Thailand, is described on the basis of complete shells. They are characterized by a combination of primitive features (the presence of a pair of mesoplastra meeting on the midline) and a series of derived characters (loose plastron–carapace attachment, short diamond-shaped entoplastron, dorsal thickening of the lateral edge of the second to seventh peripheral plates, expanded seventh to eleventh peripheral plates, extension of

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14

Jalilov, Gafur, Isomiddin Togaev, Ma’rufjon Alimov, Farrukh Babajanov, Zaytuna Ibragimova, and Sarvar Melikuziyev. "Systematic composition of the middle Jurassic flora and its stratigraphic distribution (Ustyurt region, Uzbekistan)." E3S Web of Conferences 452 (2023): 01044. http://dx.doi.org/10.1051/e3sconf/202345201044.

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The article presents the systematic composition and stratigraphic distribution of the Middle Jurassic flora of Ustyurt (Uzbekistan). In the Middle Jurassic sediments, three plant complexes of different ages are distinguished, corre-sponding to aalen, bayos and bath, differing from each other by the unequal species composition of Coniopteris ferns and Nilssonia cicadas. The change of complexes during the Middle Jurassic occurred gradually. The vegetation reached its greatest dawn in the Bajocian and Bata centuries.

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15

Hou, Haihai, Shujun Liu, Longyi Shao, Yonghong Li, Ming’en Zhao, and Cui Wang. "Elemental geochemistry of the Middle Jurassic shales in the northern Qaidam Basin, northwestern China: Constraints for tectonics and paleoclimate." Open Geosciences 13, no. 1 (2021): 1448–62. http://dx.doi.org/10.1515/geo-2020-0318.

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Abstract The elemental geochemical characteristics of mudstones/shales are good tracers for indicating the evolution of tectonics, paleoenvironment, and paleoclimate. Based on the continuous sampling of drilling cores from the Middle Jurassic Dameigou and Shimengou Formations in the northern Qaidam Basin, the major, trace, and rare earth elements of the 31 mudstones and shales were analyzed. The information on the evolution of tectonics, provenance, and paleoclimate during Middle Jurassic was also recovered. The results show that: (1) A couple of elements consisting of Sc, Y, V, Cr, Co, Ni, Cu

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Sapunov, Ivo, Platon Tchoumatchenco, and Vladimir Shopov. "The Lower Jurassic in a part of western Stara Planina Mts. (biostratigraphy and palaeotectonics)." Geologica Balcanica 24, no. 2 (1994): 3–19. http://dx.doi.org/10.52321/geolbalc.24.2.3.

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Detailed biostratigraphical study (on brachiopods, bivalves and ammonites) on seven instructive sections established that only a part of them are complete, while the others are more or less incomplete. The reason for this phenomenon is the gradual marine Early Jurassic transgression which has occurred during the Hettangian in some areas (i.e. the section near the Gaganica Village), and later – during the Early Pliensbachian (the section at the Ledenika Cave). Locally the marine transgression had been preceded by continental lacustrine and (or) paludal accumulation (the sections near the villag

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Anquetin, Jérémy, Paul M. Barrett, Marc E. H. Jones, Scott Moore-Fay, and Susan E. Evans. "A new stem turtle from the Middle Jurassic of Scotland: new insights into the evolution and palaeoecology of basal turtles." Proceedings of the Royal Society B: Biological Sciences 276, no. 1658 (2008): 879–86. http://dx.doi.org/10.1098/rspb.2008.1429.

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The discovery of a new stem turtle from the Middle Jurassic (Bathonian) deposits of the Isle of Skye, Scotland, sheds new light on the early evolutionary history of Testudinata. Eileanchelys waldmani gen. et sp. nov. is known from cranial and postcranial material of several individuals and represents the most complete Middle Jurassic turtle described to date, bridging the morphological gap between basal turtles from the Late Triassic–Early Jurassic and crown-group turtles that diversify during the Late Jurassic. A phylogenetic analysis places the new taxon within the stem group of Testudines (

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18

Yao, Qiuhui, and Kai Cui. "Early and middle Jurassic sequence stratigraphic division of M coalfield in Xinjiang." E3S Web of Conferences 352 (2022): 01073. http://dx.doi.org/10.1051/e3sconf/202235201073.

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The coal accumulation in the M coalfield occurred in the Early-Middle Jurassic. There are three main coal-bearing strata in the M coalfield, the Early Jurassic Talicike Formation, the Yangxia Formation and the Middle Jurassic Kizilenur Formation. Based on the sequence stratigraphic division and sedimentary environment analysis of 85 Jurassic wells in the Kubai Basin, and the compilation of sequence stratigraphic correlation profiles for 20 well-connected wells, this paper comprehensively studies the drilling, logging, outcrop, core and paleontological data. This paper establishes the isochrono

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Wang, Hao, and Ling Yun Pang. "Sequence Strata Division and Source Bed of Coal Bed Gas Accumulation Law of Early~Middle Jurassic at Xinjiang KuBai Coalfield." Advanced Materials Research 926-930 (May 2014): 4348–52. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.4348.

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The coal accumulation effect occurred at KuBai Coalfield in the early~middle Jurassic, including three major coal-bearing strata: Tarja Chick and Yangxia Group of Early Jurassic, and Kezilenuer group of Middle Jurassic. This article makes the contrast segment of 20 tie-well sequence strata by dividing the sequence strata and analyzing the depositional environment analysis of 85 drilling wells at Jurassic strata of KuBai Basin. By overall analyzing the materials of drilling, logging, outcropping, core and paleontology, it establishes the contrast framework of isochronal sequence strata with the

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20

Greig, Charles J. "Jurassic and Cretaceous plutonic and structural styles of the Eagle Plutonic Complex, southwestern British Columbia, and their regional significance." Canadian Journal of Earth Sciences 29, no. 4 (1992): 793–811. http://dx.doi.org/10.1139/e92-067.

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The Eagle Plutonic Complex is an elongate north-northwest-trending body of deformed Middle to Late Jurassic and middle Cretaceous rocks which underlies the southwestern margin of the Intermontane terrane. New mapping of the complex and its country rocks, in concert with geochronometry, has defined episodes of contractional, ductile deformation in the Middle to Late Jurassic and middle Cretaceous, as well as brittle deformation in Tertiary time. Synkinematic Middle to Late Jurassic Eagle tonalite at the eastern margin of the Eagle Complex intrudes mylonitic Nicola Group rocks and structurally o

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Tchoumatchenco, Platon. "Palaeoenvironments of northwestern Bulgaria and northeastern Serbia during the Jurassic." Geologica Balcanica 49, no. 1 (2020): 67–72. http://dx.doi.org/10.52321/geolbalc.49.1.67.

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Jurassic rocks in the Danube Region of northwestern Bulgaria and northeastern Serbia have been the subject of numerous earlier studies that have shown notable similarities between their sedimentary facies and depositional environments. In terms of regional palaeotectonic zonation, this area represents the westernmost parts of the Vidin Early–Middle Jurassic Complex Horst and the Mihaylovgrad Early–Middle Jurassic Graben in NW Bulgaria, as well as the easternmost part of the Lower Danubicum in NE Serbia, which collectively take part of the Jurassic Moesian Platform. For compiling an overall con

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Tchoumatchenco, Platon. "Palaeoenvironments of northwestern Bulgaria and northeastern Serbia during the Jurassic." Geologica Balcanica 49, no. 1 (2020): 67–72. https://doi.org/10.52321/GeolBalc.49.1.67.

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Jurassic rocks in the Danube Region of northwestern Bulgaria and northeastern Serbia have been the subject of numerous earlier studies that have shown notable similarities between their sedimentary facies and depositional environments. In terms of regional palaeotectonic zonation, this area represents the westernmost parts of the Vidin Early–Middle Jurassic Complex Horst and the Mihaylovgrad Early–Middle Jurassic Graben in NW Bulgaria, as well as the easternmost part of the Lower Danubicum in NE Serbia, which collectively take part of the Jurassic Moesian Platform. For compiling an

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23

Goryacheva, A. A., L. A. Glinskikh, O. S. Dzyuba, O. S. Urman, and B. N. Shurygin. "THE FIRST DATA ON MIDDLE JURASSIC DINOFLAGELLATE CYSTS AND FORAMINIFERS OF THE RUSSIAN FAR EAST." Доклады Российской академии наук. Науки о Земле 510, no. 1 (2023): 66–70. http://dx.doi.org/10.31857/s268673972260285x.

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Information about the first records of dinocysts and foraminifers in the Middle Jurassic deposits of the Russian Far East and their taxonomic affiliation is given. The use of foraminiferal and ostracod assemblages as a tool for biostratigraphic subdivision and correlation of the Middle Jurassic sections of this region is very difficult due to the poor preservation and limited occurrence of these microfossils. Findings of dinocysts Endoscrinium galeritum, Tubotuberella cf. apatela, Wanaea fimbriata, Meiourogonyaulax cf. caytonensis raise the question of correcting the stratigraphic range of the

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KHRAMOV, ALEXANDER V. "The new fossil lacewings of Grammolingiidae (Neuroptera) from the Jurassic of Central Asia and Mongolia, with notes on biogeography of the family." Zootaxa 3478, no. 1 (2012): 297–308. http://dx.doi.org/10.11646/zootaxa.3478.1.28.

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A new genus and three new species of the family Grammolingiidae are described: Protolingia mira gen. et sp. nov. andLitholingia longa sp. nov. from the Sai-Sagul locality (Kyrgyzstan, upper Lower Jurassic–lower Middle Jurassic) and Lep-tolingia oblonga sp. nov. from the Houtiyn-Hotgor locality (Mongolia, Upper Jurassic). Grammolingiidae are recordedfrom the Karatau locality (Kazakhstan, Upper Jurassic). This fossil lacewing family occurred in the South of Central Asiaand in East Asia during the Middle and Upper Jurassic; its distribution was limited by Mongol-Okhotsk and Turgai seas.Grammoling

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Zhongjie, Xu, Kong Jintao, Cheng Rihui, Lan Yizhi, and Wang Liaoliang. "LA-ICP-MS U–Pb ages of detrital zircons from Middle Jurassic sedimentary rocks in southwestern Fujian: Sedimentary provenance and its geological significance." Open Geosciences 12, no. 1 (2020): 958–76. http://dx.doi.org/10.1515/geo-2020-0185.

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AbstractIn order to determine the tectonic regime change of the early Mesozoic in the South China Block, this study analyzed sedimentary rocks in the Middle Jurassic of southwestern Fujian by modal analysis of sandstones, elemental geochemical analysis of mudstones, and detrital zircons U–Pb dating. The results show that the detrital zircons in Southwestern Fujian mainly consist of Paleoproterozoic to early Mesozoic zircons in the Middle Jurassic. Within the Dongkeng profile of the Zhangping Formation, DK5 sample (lower part) showed a major age peak at ca. 1,848 Ma and two secondary age peaks

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Ghalandari, Zohreh, Mohammad Vahidinia, and Seyyed Reza Mousavi-Harami. "Jurassic Biostratigraphy in the Persian Gulf, South of Iran." Micropaleontology 65, no. 5 (2019): 449–58. http://dx.doi.org/10.47894/mpal.65.5.05.

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The Neyriz, Surmeh and Hith Formations outcrop in the Persian Gulf area. Assemblages of benthic foraminifera and green algae were studied in 789 meters from these formations in the onshore middle part of the Persian Gulf, South of Iran. These formations consist of grey shales, dolomite, limestone and anhydrite. The Neyriz andHith formations are barren of fossils and the age of Neyriz Formation is Early Jurassic and the age of Hith Formation is Late Jurassic (Tithonian) based on stratigraphy. In the Surmeh Formation 18 genera and 17 species of benthic foraminifera, 5 genera and 3 species of alg

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Holwerda, Femke M., and Diego Pol. "Phylogenetic analysis of Gondwanan basal eusauropods from the Early-Middle Jurassic of Patagonia, Argentina." Spanish Journal of Palaeontology 33, no. 2 (2018): 289. http://dx.doi.org/10.7203/sjp.33.2.13604.

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Gondwanan Jurassic non-neosauropod eusauropods are key for the understanding of sauropod evolution, although their phylogenetic interrelationships remain poorly understood. However, following the revision of the holotype of a key taxon from the early Middle Jurassic Cañadón Asfalto Formation Patagonia, Argentina, Patagosaurus fariasi, the phylogenetic a ? nities need to be tested with new osteological information gathered during the redescription of the holotype of Patagosaurus. A new phylogeny presented here shows a close a ? liation of Patagosaurus with Cetiosaurus from the Middle Jurassic o

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Stemmerik, Lars. "The Jurassic of North-East Greenland." Geological Survey of Denmark and Greenland (GEUS) Bulletin 5 (November 1, 2004): 1–7. http://dx.doi.org/10.34194/geusb.v5.4799.

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The Jurassic rift succession of East Greenland has been intensely studied over the last 25 years, particularly within the main outcrop areas of Jameson Land and Wollaston Forland. The more isolated and poorly known outcrops on Traill Ø, Hold with Hope, Hochstetter Forland and Store Koldewey were investigated in the late 1980s and mid-1990s in order to develop a better regional understanding of the Jurassic in eastern Greenland.This collection of seven papers focuses on stratigraphic and depositional aspects of the Jurassic at these localities. Comprehensive descriptions of the Jurassic on Hold

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Royo-Torres, Rafael, Alberto Cobos, Pedro Mocho, and Luis Alcalá. "Origin and evolution of turiasaur dinosaurs set by means of a new ‘rosetta’ specimen from Spain." Zoological Journal of the Linnean Society 191, no. 1 (2020): 201–27. http://dx.doi.org/10.1093/zoolinnean/zlaa091.

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Abstract Turiasauria is a non-neosauropod eusauropod clade of dinosaurs known since 2006, when the description of Turiasaurus was published. This group, including Losillasaurus, was originally thought to have been restricted to the Late Jurassic of Spain. However, over the last decade, our knowledge of this group has improved with the discovery of new taxa such as Zby from the Portuguese Late Jurassic, Tendaguria from the Tanzanian Late Jurassic and Mierasaurus and Moabosaurus from the Early Cretaceous of the USA. Here, we describe a new specimen of Losillasaurus from Spain, which allows us to

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Rodríguez-de la Rosa, Rubén A., María Patricia Velasco-de León, Javier Arellano-Gil, and Diego Enrique Lozano-Carmona. "Middle Jurassic ankylosaur tracks from Mexico." Boletín de la Sociedad Geológica Mexicana 70, no. 2 (2018): 379–95. http://dx.doi.org/10.18268/bsgm2018v70n2a8.

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Cox, B. M. "English Callovian (Middle Jurassic) Perisphinctid Ammonites." Monographs of the Palaeontographical Society 140, no. 575 (1986): 1–59. http://dx.doi.org/10.1080/25761900.2022.12131759.

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Prinz, Peter. "Middle Jurassic corals from Northern Chile." Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1986, no. 12 (1986): 736–50. http://dx.doi.org/10.1127/njgpm/1986/1986/736.

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Flynn, John J., J. Michael Parrish, Berthe Rakotosamimanana, William F. Simpson, and André R. Wyss. "A Middle Jurassic mammal from Madagascar." Nature 401, no. 6748 (1999): 57–60. http://dx.doi.org/10.1038/43420.

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Brunetti, Maura, Christian Vérard, and Peter O. Baumgartner. "Modeling the Middle Jurassic ocean circulation." Journal of Palaeogeography 4, no. 4 (2015): 371–83. http://dx.doi.org/10.1016/j.jop.2015.09.001.

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Shaуnoha, Ihor. "Details of lithological-paleontological characteristics and the correlation’s peculiarities of the middle Jurassic stratons of Precarpathian foredeep." Paleontological Collection 53 (2021): 67–75. http://dx.doi.org/10.30970/pal.53.05.

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In the Precarpathians, Jurassic deposits are potentially oil and gas. They are represented by a powerful (over 1,000 m) facies-changing terrigenous-carbonate stratum of the Middle and Upper Jurassic with few paleontological remains. Stratification of these deposits is complicated. The integrated use of recent paleontological, lithological, and geophysical studies has made it possible to dissect and correlate sections of the Middle Jurassic in more detail. Based on the new results obtained during the processing of core material and geophysical data from 6 wells drilled in the Precarpathians, ad

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Zhang, Junfeng. "New winter crane flies (Insecta: Diptera: Trichoceridae) from the Jurassic Daohugou Formation (Inner Mongolia, China) and their associated biota." Canadian Journal of Earth Sciences 43, no. 1 (2006): 9–22. http://dx.doi.org/10.1139/e05-092.

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Four extinct new species referable, respectively, to three extinct new genera within Trichoceridae have been recovered from the Jurassic Daohugou Formation in Ningcheng, Chifeng, Inner Mongolia, China: Archaeotrichocera ephemera gen. et sp. nov., Tanyochoreta integera gen. et sp. nov., Tanyochoreta chifengica sp. nov., and Sinotrichocera parva gen. et sp. nov. The specimen described earlier as trichocerids from China, Mesotrichocera laiyangensis Hong and Wang 1990, does not belong to this family. The Daohugou biota comprises a wide range of vertebrate and invertebrate organisms that inhabited,

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Milan, Jesper. "New theropod, thyreophoran, and small sauropod tracks from the Middle Jurassic Bagå Formation, Bornholm, Denmark." Bulletin of the Geological Society of Denmark 59 (September 30, 2011): 51–59. http://dx.doi.org/10.37570/bgsd-2011-59-06.

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Three new dinosaur tracks are described from the Middle Jurassic Bagå Formation of Bornholm, Denmark. The tracks are all preserved as natural casts on the underside of fluvial sandstone blocks originating from the old Hasle Klinkefabrik’s clay pit, now called Pyritsøen. The new tracks are from a medium-sized theropod, a thyreophoran, and a small sauropod. Together with a thyreophoran track and large sauropod tracks described in 2005, the Middle Jurassic dinosaur fauna of Bornholm now comprises theropods, two sizes of sauropods and at least one type of thyreophoran dinosaur. This is important a

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Milàn, Jesper, Peter L. Falkingham, and Inken Juliane Mueller-Töwe. "Small ornithopod dinosaur tracks and crocodilian remains from the Middle Jurassic Bagå Formation, Bornholm, Denmark: Important additions to the rare Middle Jurassic vertebrate faunas of Northern Europe." Bulletin of the Geological Society of Denmark 68 (November 17, 2020): 245–53. http://dx.doi.org/10.37570/bgsd-2020-68-11.

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Two new small tridactyl dinosaur tracks are found in the Middle Jurassic Bagå Formation of Bornholm and are interpreted as ornithopodian in origin. A skeletal fragment is identified as a crocodilian skull fragment. Previous finds of dinosaur tracks from the locality consist of two sizes of sauropods, a medium sized theropod and thyreophorans. The addition of tracks from ornithopod dinosaurs and skeletal evidence of crocodilians now give a broader picture of a diverse Middle Jurassic vertebrate fauna. This is an important addition to the understanding of the terres-trial Mesozoic ecosystem of D

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Kustatscher, Evelyn, Giovanni G. Scanu, Jiří Kvaček, and Johanna H. A. Van Konijnenburg-van Cittert. "The Krasser collection In the Faculty of Sciences, Charles University, Prague – New insights into the Middle Jurassic flora of Sardinia." Fossil Imprint 72, no. 3-4 (2016): 140–54. http://dx.doi.org/10.14446/fi.2016.140.

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Revision of part of the Middle Jurassic flora of Sardinia, the Krasser collection, stored in Prague (Lovisato B collection), containing 23 fossil taxa of horsetails, ferns, cycadophytes, ginkgophytes and conifers. The conifers are most diverse, followed by cycadophytes and ferns. The composition of this assemblage differs notably from the Lovisato collection stored in Cagliari, suggesting that it might derive from a different stratigraphic level and/or palaeoenvironment. The palaeodiversity of the Middle Jurassic flora of Sardinia increases to 46 fossil taxa with this revision. Cycadolepis sp.

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XU, MIN-MIN, and DI-YING HUANG. "A new species of Cicadocoris (Hemiptera, Coleorrhyncha, Progonocimicidae) from the Middle Jurassic of the Jiyuan Basin, China." Zootaxa 5396, no. 1 (2023): 35–40. http://dx.doi.org/10.11646/zootaxa.5396.1.8.

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Progonocimicids are one of key representatives from the Middle-Late Jurassic Daohugou biota, the early assemblage of the Yanliao biota. Here we describe a new progonocimicid species, Cicadocoris henanensis sp. nov., from the Middle Jurassic Jiyuan Basin in central China. This not only represents a novel case indicating the abundance of progonocimicids during the Jurassic but also provides additional evidence substantiating the stratigraphic correlation between the Yangshuzhuang Formation in the Jiyuan Basin and the Haifanggou Formation in the Yanliao Region.

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ZHANG, KUIYAN, DING YANG, DONG REN, and CHUNGKUN SHIH. "The oldest Calosargus Mostovski, 1997 from the Middle Jurassic of China (Diptera: Brachycera: Archisargidae)." Zootaxa 1645, no. 1 (2007): 1–17. http://dx.doi.org/10.11646/zootaxa.1645.1.1.

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The family Archisargidae is an endemic Jurassic group. So far, 23 described species in 8 genera have been found in Kazakhstan, China and Mongolia. Calosargus Mostovski, 1997 is a small genus with 2 subgenera and 3 species from the Middle/Upper Jurassic of Kazakhstan. In this paper, 6 new species from the Middle Jurassic of China that belong to Calosargus (Calosargus) are described. They are the oldest known members in this genus. A key to the species of the genus Calosargus is given.

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Fusheng, TIAN, ZHENG Daran, NEL André, YE Yifei, MEI Ting, and ZHANG Haichun. "A new campterophlebiid damsel-dragonfly (Odonata: Isophlebioidea) from the Middle Jurassic Yanan Formation of Yulin City, Shaanxi Province, NW China." Comptes Rendus Palevol 22, no. 23 (2023): 491–96. https://doi.org/10.5852/cr-palevol2023v22a23.

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The family Campterophlebiidae Handlirsch, 1920 is the dominant Jurassic clade of Odonata Fabricius, 1793, especially hosting a high diversification in northern China. The Chinese campterophlebiid damsel-dragonflies were mainly recovered from the Middle Jurassic of Inner Mongolia, northern China. In the present study, a new campterophlebiid, <em>Parasinitsia qingyunensis</em> n. gen., n. sp., is described from the early Middle Jurassic Yanan Formation of the Ordos Basin, NW China. <em>Parasinitsia</em> n. gen. resembles the genus <em>Sinitsia</em> Pritykina, 2006 recorded from th

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Piasecki, Stefan, Michael Larsen, Jens Therkelsen, and Henrik Vosgerau. "Jurassic dinoflagellate cyst stratigraphy of Hold with Hope, North-East Greenland." Geological Survey of Denmark and Greenland (GEUS) Bulletin 5 (November 1, 2004): 73–88. http://dx.doi.org/10.34194/geusb.v5.4808.

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Dinoflagellate cysts of the Middle–Upper Jurassic succession on northern Hold with Hope have been studied in order to establish a biostratigraphic framework and to date the succession. The Pelion Formation is characterised by abundant Chytroeisphaeridia hyalina and Sentusidinium spp., with some Ctenidodinium thulium and Paragonyaulacysta retiphragmata in the lower part. Mendicodinium groenlandicum appears higher in the formation followed by Trichodinium scarburghense in the upper part. The succeeding Payer Dal Formation contains Scriniodinium crystallinum, Rigaudella aemula and Leptodinium sub

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TONG, HAIYAN, IGOR DANILOV, YONG YE, HUI OUYANG, and GUANGZHAO PENG. "Middle Jurassic turtles from the Sichuan Basin, China: a review." Geological Magazine 149, no. 4 (2011): 675–95. http://dx.doi.org/10.1017/s0016756811000859.

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AbstractThe turtle fauna of the Middle Jurassic Xiashaximiao Formation in the Sichuan Basin and the type series ofChengyuchelys baenoidesYoung & Chow, 1953 are revised. By the absence of a mesoplastron and other shell characters, both the holotype and paratype ofChengyuchelys baenoidesbelong to the family Xinjiangchelyidae and come probably from the Upper Jurassic Shangshaximiao Formation. The Middle Jurassic turtle assemblage of the Sichuan Basin is composed of two entities: the Bashuchelyidae fam. nov. (Bashuchelysgen. nov.,Chuannanchelysgen. nov.) andProtoxinjiangchelysgen. nov. on the

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Yi, Hongyu, Jonathan P. Tennant, Mark T. Young, et al. "An unusual small-bodied crocodyliform from the Middle Jurassic of Scotland, UK, and potential evidence for an early diversification of advanced neosuchians." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 107, no. 1 (2016): 1–12. http://dx.doi.org/10.1017/s1755691017000032.

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ABSTRACTThe Middle Jurassic is a poorly sampled time interval for non-pelagic neosuchian crocodyliforms, which obscures our understanding of the origin and early evolution of major clades. Here we report a lower jaw from the Middle Jurassic (Bathonian) Duntulm Formation of the Isle of Skye, Scotland, UK, which consists of an isolated and incomplete left dentary and part of the splenial. Morphologically, the Skye specimen closely resembles the Cretaceous neosuchians Pachycheilosuchus and Pietraroiasuchus, in having a proportionally short mandibular symphysis, shallow dentary alveoli and inferre

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Boncheva, Iliana, Ivan Zagorchev, and Emil Goranov. "New data on the Treklyano Group (Jurassic): sections Propast and Gorna Glogovitsa (Southwest Bulgaria)." Geologica Balcanica 34, no. 3-4 (2004): 45–70. http://dx.doi.org/10.52321/geolbalc.34.3-4.45.

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The sections Propast and Gorna Glogovitsa exhibit the transitions between the axial parts (radiolariteshale interbedding) of the Treklyano Jurassic trough and its eastern boundary with the terrigenous-carbonate successions of "Balkanide" type. The section Propast has a complex imbricated structure, and the separate thrust sheets exhibit different basin environments. Rich radiolarian assemblages are determined, and their concurrent ranges allow for a more precise biostratigraphic analysis and chronostratigraphic conclusions. The lowermost parts of the Treklyano Group are referred to the upper p

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Milàn, Jesper, and Octávio Mateus. "A Turiasaurian (Dinosauria, Sauropoda) Tooth from the Pliensbachian Hasle Formation of Bornholm, Denmark, Shows an Early Jurassic Origin of the Turiasauria." Diversity 16, no. 1 (2023): 12. http://dx.doi.org/10.3390/d16010012.

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Turiasauria is a clade of basal sauropod dinosaurs hitherto only known from the Middle Jurassic (Bathonian) to the Lower Cretaceous (Valanginian). A new find of a shed tooth crown from the Lower Jurassic (Pliensbachian), Halse Formation of Bornholm, Denmark, is spoon-like, asymmetrical, and heart-shaped, which identifies the tooth as turiasaurian, pushing the origin of the Turiasauria some 17 My back into the Lower Jurassic. This suggests a North Pangean/Laurasian origin of the turiasaurian clade, which then, during the Middle to Late Jurassic, dispersed through Europe, India, and Africa, with

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Stanley, George D., and Louise Beauvais. "Middle Jurassic corals from the Wallowa terrane, west-central Idaho." Journal of Paleontology 64, no. 3 (1990): 352–62. http://dx.doi.org/10.1017/s0022336000018552.

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New colonial corals from near Pittsburg Landing, Idaho, are clearly dated as Middle Jurassic (Bajocian) in age. They consist of Coenastraea hyatti (Wells) and Thecomeandra vallieri n. sp., and occur abundantly with molluscan fossils in thin, biostromal limestone beds in the Coon Hollow Formation. These fossils are the youngest shelly faunas yet known from the Wallowa terrane. The similarity of the coral and bivalve fauna to endemic faunas of the Western Interior suggests that during Middle Jurassic time, the Wallowa terrane was close enough to the North American craton for faunal exchange with

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Kostaki, G., A. Kilias, H. J. Gawlick, and F. Schlagintweit. "?Kimmeridgian-Tithonian shallow- water platform clasts from mass flows on top of the Vardar/Axios ophiolites." Bulletin of the Geological Society of Greece 47, no. 1 (2016): 184. http://dx.doi.org/10.12681/bgsg.10923.

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The Late Jurassic to Early Cretaceous sedimentary succession of the Neochorouda Unit lies unconformably on top of the Oreokastro ophiolites of the Vardar/Axios “suture zone” in northern Greece. This succession consists of turbidites and mass flows and provides an upper limit for ophiolite emplacement. New biostratigraphic and microfacies analysis from the clasts in the mass flows were carried out for a better understanding of the Late Jurassic to Early Cretaceous geodynamic history. Microfacies and organism content prove the onset of Late Jurassic carbonate platforms on top of a Middle to Late

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Wang, Yu, Haoyuan Lan, Chong Jin, and Yuhuang Zhang. "Petrogenesis of Middle Jurassic Syenite-Granite Suites and Early Cretaceous Granites with Associated Enclaves in Southwestern Zhejiang, SE China: Implications for Subduction-Related Tectonic Evolution Beneath Northeastern Cathaysia Block." Minerals 15, no. 5 (2025): 474. https://doi.org/10.3390/min15050474.

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Late Mesozoic magmatism in Southeast China extensively reworked the Cathaysia Block’s crust, linked to the Paleo-Pacific Plate subduction beneath East Asia. The northeastern Cathaysia Block, largely covered by Cretaceous volcanic-sedimentary basins, has limited Jurassic exposure to Early Cretaceous intrusions, which provides critical insights into deep crust-mantle processes. In this study, we present zircon U-Pb geochronology and Hf isotope, whole-rock geochemistry, and Sr-Nd isotopes of the Middle Jurassic syenite-granite suites and Early Cretaceous granites with enclaves in the Qingyuan are

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