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Journal articles on the topic 'Shelly fossils'

Author: Grafiati

Published: 10 December 2022

Last updated: 31 July 2025

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1

LINDSAY-KAUFMAN, AMELIA, STEPHANIE A. ROSBACH, LAUREN S. WRIGHT, et al. "DESCRIBING DIFFICULT SHELL-HASH ASSEMBLAGES FROM THE LOWER CAMBRIAN SOLTANIEH FORMATION, ALBORZ MOUNTAINS, NORTHERN IRAN." PALAIOS 37, no. 7 (2022): 374–91. http://dx.doi.org/10.2110/palo.2021.031.

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ABSTRACT The fossil record spanning the latest Ediacaran and earliest Cambrian is characterized by the proliferation of small, mineralized organisms that comprise the well-known and abundant deposits of small shelly fauna. Many of these fossils are tubular or conical forms with simple morphologies, and thus present difficulties in both taxonomic and phylogenetic interpretation. This study investigates a community of poorly preserved shelly tubicolous organisms in two fossiliferous slabs from the Soltanieh Formation, northern Iran. Analysis of the taphonomy of this fossil assemblage using thin-

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Bengtson, Stefan. "Early skeletal fossils." Paleontological Society Papers 10 (November 2004): 67–78. http://dx.doi.org/10.1017/s1089332600002345.

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The Precambrian-Cambrian transition saw the burgeoning of diverse skeletal organisms (“small shelly fossils”), represented in the fossil record by spicules, tubes, tests, conchs, shells, and a variety of sclerites and ossicles. Whereas calcareous biomineralization as such may have been facilitated by changes in ocean chemistry at this time, the utilization of biominerals in mineralized skeletons is a different process. The massive appearance of skeletons is most likely an epiphenomenon of the general radiation of body plans and tissues. The “choice” of biominerals (mainly calcium carbonates, c

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Narbonne, Guy M., Paul M. Myrow, Ed Landing, and Michael M. Anderson. "A candidate stratotype for the Precambrian–Cambrian boundary, Fortune Head, Burin Peninsula, southeastern Newfoundland." Canadian Journal of Earth Sciences 24, no. 7 (1987): 1277–93. http://dx.doi.org/10.1139/e87-124.

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The Burin Peninsula exhibits an exceptionally thick and essentially continuous succession of marine strata through the Precambrian–Cambrian transition. Fossils are abundant and include trace fossils, small shelly fossils, vendotaenid algae, soft-bodied megafossils, and microfossils. The Burin Peninsula is readily accessible and has long been considered a potential area for a Precambrian–Cambrian boundary stratotype.A continuous section through the upper part of member 1 and all of member 2 of the Chapel Island Formation is exposed at Fortune Head, and this section is herein proposed as a globa

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Moore, John L., Susannah M. Porter, and Guoxiang Li. "Two Unusual Small Shelly Fossils from the Lower Cambrian of Southeastern Shaanxi Province, China." Journal of Paleontology 88, no. 2 (2014): 348–58. http://dx.doi.org/10.1666/13-065.

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Phosphatized and phosphatic small shelly fossils are a major source of information concerning the evolution of animals during the early Cambrian. Although progress has been made in understanding some of these fossils, many remain enigmatic, both with regard to their phylogenetic affinities and the overall morphology of the animal from which isolated sclerites came. Two unusual fossils from the upper lower Cambrian (Qiongzhusian or Atdabanian) Xihaoping Member of the Dengying Formation from Xiaowan, Xixiang County, southeastern Shaanxi Province, China are described herein. The first of these is

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Joshi, Ashutosh, V. K. Mathur, and D. K. Bhatt. "Discovery of Redlichid Trilobites from the Arenaceous Member of the Tal Formation, Garhwal Syncline, Lesser Himalaya, India." Journal Geological Society of India 33, no. 6 (1989): 538–46. http://dx.doi.org/10.17491/jgsi/1989/330605.

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Abstract The paper records the first find of identifiable redlichid trilobites, belonging to two genera, from the strata of the Arenaceous Member of the Tal Formation in the Garhwal Syncline. This fossil horizon in the Garhwal Syncline, in the past, has also yielded small shelly fossils. The chronostratigraphic designation of this small shelly fauna in the Qiongzhusian (? Atdabanian) Stage of China now stands corrected with the present discovery. The trilobite genera correspond to the Botomian Stage (1 Tsanglangpuian Stage of China), in the Early Cambrian.

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Godard, Gaston. "Early texts on the Cenozoic fossils of Aquitaine (1622–1767) and pioneering debates on the organic origin of fossils, the superpositioning of strata and the mobility of the seas." BSGF - Earth Sciences Bulletin 189, no. 2 (2018): 8. http://dx.doi.org/10.1051/bsgf/2018007.

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Several unpublished or little known writings from the 17th–18thcenturies deal with the Bordeaux region’s “figured stones”, which are actually Miocene fossils. The oldest work is a book by Pierre de L’Ancre (1622), where the author describes the shelly sediments of Sainte-Croix-du-Mont and relates Louis XIII’s visit there in October 1620. De L’Ancre is unsure as to the origin of the fossil shells, which could be ascribed to consolidation of the host sediments during lengthy ages after a withdrawal of the sea, transport from the Ocean by the Flood orin-situdevelopment through « esbatement de la

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Rozanov, A. Y. "The Cambrian radiation of shelly fossils." Trends in Ecology & Evolution 7, no. 3 (1992): 84–87. http://dx.doi.org/10.1016/0169-5347(92)90246-8.

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Gilbert, Ian R., Nigel C. Hughes, and Paul M. Myrow. "Cambrian microfossils from the Tethyan Himalaya." Journal of Paleontology 90, no. 1 (2016): 10–30. http://dx.doi.org/10.1017/jpa.2015.74.

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AbstractCambrian biostratigraphy of the Indian subcontinent is best documented from the Parahio Formation of the Tethyan Himalaya. Recently established trilobite biostratigraphy shows that the formation encompasses the latest part of unnamed Stage 4 and much of unnamed Stage 5. A variety of small shelly fossils have been recovered via acid digestion of carbonate beds and include tetract and pentact hexactinellid sponge spicules, chancelloriid spicules belonging to Chancelloria sp. and a new species, Archiasterella dhiraji, shells of an helcionelloid comparable to Igorella maidipingensis, a mer

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CREVELING, J. R., A. H. KNOLL, and D. T. JOHNSTON. "TAPHONOMY OF CAMBRIAN PHOSPHATIC SMALL SHELLY FOSSILS." PALAIOS 29, no. 6 (2014): 295–308. http://dx.doi.org/10.2110/palo.2014.002.

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El-Khayal, A. A., and M. Romano. "A revision of the upper part of the Saq Formation and Hanadir Shale (lower Ordovician) of Saudi Arabia." Geological Magazine 125, no. 2 (1988): 161–74. http://dx.doi.org/10.1017/s0016756800009560.

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AbstractThe previously termed Hanadir Shale of Saudi Arabia is described and re-defined as the Hanadir Formation. At the type locality of Al Hanadir the unit is probably entirely of Llanvirn age while further north shelly faunas of possible Llandeilo age occur in the upper part. Trace fossil assemblages with abundant cruzianids (C. furcifera, C. rugosa, C. goldfussi), Pelecypodichnus, Didymaulichnus and Diplichnites indicate an Arenig age for beds in the upper part of the underlying Saq Formation, while the top of this unit yielded hitherto unrecorded pendent and biserial scandent graptolites,

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Signor, Philip W., Jeffrey F. Mount, and Beth R. Onken. "A pre-trilobite shelly fauna from the White–Inyo region of eastern California and western Nevada." Journal of Paleontology 61, no. 3 (1987): 425–38. http://dx.doi.org/10.1017/s0022336000028614.

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A low-diversity shelly fauna occurs in the Deep Spring Formation of the White–Inyo Mountains of eastern California and in Esmeralda County, Nevada. Although poorly preserved, specimens can be recovered through acid digestion of the limestone matrix. The fauna is composed of three tubes of uncertain affinities and a hyolith.Nevadatubulus dunfeein. gen. and sp., a distinctive, randomly curved and annulated tube, is abundant and far outnumbers the remaining three elements:Coleoloides inyoensisn. sp.,Sinotubulites cienegensisMcMenamin, and the hyolith Salanytheca sp. The original composition of th

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Butterfield, N. J., and C. J. Nicholas. "Burgess Shale-type preservation of both non-mineralizing and ‘shelly’ Cambrian organisms from the Mackenzie Mountains, northwestern Canada." Journal of Paleontology 70, no. 6 (1996): 893–99. http://dx.doi.org/10.1017/s0022336000038579.

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Lower to Middle Cambrian shales of the Mount Cap Formation in the Mackenzie Mountains, northwestern Canada, host a variety of Burgess Shale-type macrofossils, including anomalocarid claws, several taxa of bivalved arthropod, articulated hyolithids, and articulated chancelloriids. Hydrofluoric acid processing has also yielded a broad range of organic-walled fossils, most of which are derived from forms more typically known as shelly fossils; e.g., trilobites, inarticulate brachiopods, small shelly fossils (SSF), hyolithids, and chancelloriids. Organic-walled hyolithids include conchs, opercula

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FELITSYN, SERGEI B., and ALEXANDER P. GUBANOV. "Nd isotope composition of early Cambrian discrete basins." Geological Magazine 139, no. 2 (2002): 159–69. http://dx.doi.org/10.1017/s0016756801006252.

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A Nd isotope map of early Cambrian epeiric basins has been inferred from the Nd isotopic signature recorded in phosphatic Small Shelly Fossils. The most radiogenic εNd(t) values characterize water reservoirs along the Avalonian and Cadomian belts, while εNd(t) values of −10 to −20 were obtained in Laurentia and East Gondwanan Australia and China. Such a distribution of Nd isotope signatures results from the different provenance of early Cambrian epeiric seas: juvenile magmatic arcs and/or cordilleran for Mongolia, Siberia, Iberia and adjacent terranes, and cratonic sources for Laurentia and Ea

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Valentine, James W. "Molecules and the Early Fossil Record." Paleobiology 16, no. 1 (1990): 94–95. http://dx.doi.org/10.1017/s0094837300009751.

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The earliest fossil record of animals has long been an enigma. For nearly a century after the appearance of The Origin of Species, mineralized trilobites were thought to be among the first organisms to appear as fossils, and as they were considered to be complex life forms, a long previous episode of animal evolution seemed to be indicated. Discovery and description of Tommotian and Vendian faunas, with their small shelly and Ediacaran fossils respectively, provided us with an idea of the nature of organisms in strata that are progressively older than the trilobite-bearing beds. Yet in these o

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Rowland, Stephen M., Veronica A. Luchinina, Igor V. Korovnikov, Dmitri P. Sipin, Alexander I. Tarletskov, and Artem V. Fedoseev. "Biostratigraphy of the Vendian-Cambrian Sukharikha River section, northwestern Siberian Platform." Canadian Journal of Earth Sciences 35, no. 4 (1998): 339–52. http://dx.doi.org/10.1139/e98-002.

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The Sukharikha River section contains more than 800 m of fossiliferous Vendian and Lower Cambrian carbonate rock deposited in ramp, shelf, and slope environments. A diverse fauna of small shelly fossils, calcibionts, brachiopods, trilobites, and archaeocyaths has allowed us to develop a multi-taxa biostratigraphic framework for this section. A dearth of distinctive fossils low in the Sukharikha Formation prevents us from determining the position of the Vendian-Cambrian boundary. Abundant small shelly fossils and archaeocyaths in the uppermost Sukharikha Formation and low in the Krasnoporog For

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Malinky, John M., and Christian B. Skovsted. "Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland." Acta Palaeontologica Polonica 49, no. 4 (2004): 551–78. https://doi.org/10.5281/zenodo.13522197.

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Malinky, John M., Skovsted, Christian B. (2004): Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland. Acta Palaeontologica Polonica 49 (4): 551-578, DOI: 10.5281/zenodo.13522197

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Malinky, John M., and Christian B. Skovsted. "Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland." Acta Palaeontologica Polonica 49, no. 4 (2004): 551–78. https://doi.org/10.5281/zenodo.13522197.

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Malinky, John M., Skovsted, Christian B. (2004): Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland. Acta Palaeontologica Polonica 49 (4): 551-578, DOI: 10.5281/zenodo.13522197

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Malinky, John M., and Christian B. Skovsted. "Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland." Acta Palaeontologica Polonica 49, no. 4 (2004): 551–78. https://doi.org/10.5281/zenodo.13522197.

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Malinky, John M., Skovsted, Christian B. (2004): Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland. Acta Palaeontologica Polonica 49 (4): 551-578, DOI: 10.5281/zenodo.13522197

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Malinky, John M., and Christian B. Skovsted. "Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland." Acta Palaeontologica Polonica 49, no. 4 (2004): 551–78. https://doi.org/10.5281/zenodo.13522197.

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Malinky, John M., Skovsted, Christian B. (2004): Hyoliths and small shelly fossils from the Lower Cambrian of North-East Greenland. Acta Palaeontologica Polonica 49 (4): 551-578, DOI: 10.5281/zenodo.13522197

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Skovsted, Christian B., and John S. Peel. "Early Cambrian brachiopods and other shelly fossils from the basal Kinzers Formation of Pennsylvania." Journal of Paleontology 84, no. 4 (2010): 754–62. http://dx.doi.org/10.1017/s0022336000058467.

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An assemblage of seventeen species of Small Shelly Fossils, dominated by the brachiopod Eothele tubulus and species of the mollusk Yochelcionella, is described from the basal Kinzers Formation of Thomasville, Pennsylvania. The occurrence extends southwards the distribution of an Early Cambrian fauna (Cambrian Series 2, Stage 4) that is otherwise characteristic of the eastern shelf of Laurentia from New York to Greenland. The poorly known acrothelid brachiopod Eothele tubulus is redescribed based on large collections of ventral valves. The shell structure of E. tubulus is characterized by ortho

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Sharma, Mukund, Manoj Shukla, and B. S. Venkatachala. "Metaphyte and Metazoan fossils from Precambrian sediments of India: a critique." Journal of Palaeosciences 40 (December 31, 1991): 8–51. http://dx.doi.org/10.54991/jop.1991.1766.

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Evidences of multicellular life from the Indian Precambrian sediments have been reviewed. Their nature, morphology, biogenecity and syngenecity are evaluated in the light of associated evidences. The published records have been grouped under 13 categories, viz., Archaeocyatha, Chuaria·Tawuia group, frordoid forms, Hyolithoides, Longfengshania, medusoids, metaphytic algae, Sekwia excentrica, shelly forms, spiral forms, trace fossils, trilobitoid and eurypteroid and enigmatic group. Contrary to the world-wide records of multicellular organisms only at the Terminal-Precambrian (≈600 Ma), some of

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Skovsted, Christian B., and John S. Peel. "Small shelly fossils from the argillaceous facies of the Lower Cambrian Forteau Formation of western Newfoundland." Acta Palaeontologica Polonica 52, no. 4 (2007): 729–48. https://doi.org/10.5281/zenodo.13741171.

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Skovsted, Christian B., Peel, John S. (2007): Small shelly fossils from the argillaceous facies of the Lower Cambrian Forteau Formation of western Newfoundland. Acta Palaeontologica Polonica 52 (4): 729-748, DOI: 10.5281/zenodo.13741171

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Novozhilova, N. V. "Small shelly fossils from the Kharayutekh Formation of the Upper Vendian period in the lower reaches of the Lena River in Eastern Siberia." Arctic and Subarctic Natural Resources 29, no. 4 (2024): 527–34. https://doi.org/10.31242/2618-9712-2024-29-4-527-534.

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The study of problematic skeletal remains from the Kharayutekh Formation of the Upper Vendian period, uncovered along the right bank of the Lena River at the mouth of the Ulakhan-Ald’yarkhay Brook, revealed two distinct levels characterized by finds of small shelly fossils embedded in dark gray limestones. The first assemblage includes problematic skeletal remains with indeterminate systematic affinities, as well as two morphological types of fossil specimens attributed to the genus Tianzhushania. These specimens represent different stages in the embryonic development of this taxonomic group.

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Shahkarami, Setareh, M. Gabriela Mángano, and Luis A. Buatois. "Ichnostratigraphy of the Ediacaran-Cambrian boundary: new insights on lower Cambrian biozonations from the Soltanieh Formation of northern Iran." Journal of Paleontology 91, no. 6 (2017): 1178–98. http://dx.doi.org/10.1017/jpa.2017.72.

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AbstractStrata in the Central Alborz Mountains, northern Iran, are interpreted to show continuous sedimentation from Ediacaran through Cambrian times. The Soltanieh Formation consists of five members: Lower Dolomite, Lower Shale, Middle Dolomite, Upper Shale and Upper Dolomite members. The clastic units (Lower and Upper Shale members) represent sedimentation in distal marine settings, ranging from the shelf to offshore, and contain abundant trace fossils of biostratigraphic utility. Four ichnozones have been recognized. Ichnozone 1, containingHelminthoidichnites tenuis,Helminthopsis tenuis, an

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Earp, Clem. "Early Devonian fossils from the Broadford Formation, central Victoria." Proceedings of the Royal Society of Victoria 127, no. 2 (2015): 7. http://dx.doi.org/10.1071/rs15014.

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The Broadford Formation of central Victoria, Australia, hitherto lacked an identifiable fossil record but has, nevertheless, recently been considered to be wholly Silurian. Shelly fossil localities below and within the Broadford Formation reported in this study have yielded Boucotia australis and other brachiopods, indicating that much of the formation has a maximum age of Early Devonian.

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Budd, Graham E., and Illiam S. C. Jackson. "Ecological innovations in the Cambrian and the origins of the crown group phyla." Philosophical Transactions of the Royal Society B: Biological Sciences 371, no. 1685 (2016): 20150287. http://dx.doi.org/10.1098/rstb.2015.0287.

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Simulation studies of the early origins of the modern phyla in the fossil record, and the rapid diversification that led to them, show that these are inevitable outcomes of rapid and long-lasting radiations. Recent advances in Cambrian stratigraphy have revealed a more precise picture of the early bilaterian radiation taking place during the earliest Terreneuvian Series, although several ambiguities remain. The early period is dominated by various tubes and a moderately diverse trace fossil record, with the classical ‘Tommotian’ small shelly biota beginning to appear some millions of years aft

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ZHU, MAOYAN, and XIAN-HUA LI. "Introduction: from snowball Earth to the Cambrian explosion–evidence from China." Geological Magazine 154, no. 6 (2017): 1187–92. http://dx.doi.org/10.1017/s0016756817000644.

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The Neoproterozoic–Palaeozoic transition (NPT) around 600 Ma ago was a critical time interval when the Earth experienced fundamental change, manifested as climatic extremes – ‘snowball Earth’ – followed by the emergence and rapid diversification of animals – ‘Cambrian explosion’. How animals and environments co-evolved, and what caused these fundamental changes to the Earth system during the NPT, is a great scientific puzzle, which has been a rapidly developing frontier of interdisciplinary research between bio- and geosciences. South China preserves a complete stratigraphic succession of the

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Brasier, Martin D. "The succession of small shelly fossils (especially conoidal microfossils) from English Precambrian–Cambrian boundary beds." Geological Magazine 123, no. 3 (1986): 237–56. http://dx.doi.org/10.1017/s0016756800034737.

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AbstractSmall shelly fossils, especially conoidal microfossils, have potential for biostratigraphic correlation of Precambrian–Cambrian boundary rocks where evolutionary successions of taxa can be recognized. A succession of hyoliths, brachiopods and species of Sunnaginia, Torellella, Eccentrotheca and Rhombocorniculum can be recognized in the Home Farm Member of Nuneaton and/or the Comley Limestone of Shropshire, England. Revised ranges of taxa are given and Sunnaginia neoimbricata n.sp., S. parva n.sp., S. angulata n.sp., Eccentrotheca grandis n.sp. and several new records are described from

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GÓMEZ-MADURO, MARÍA CECILIA, ALEJANDRA ROJAS, and SERGIO MARTÍNEZ. "TAPHONOMIC SIGNATURES IN DEAD SHELLS OF THE INVASIVE GASTROPOD RAPANA VENOSA (VALENCIENNES, 1846) AFTER TWO DECADES IN THE RÍO DE LA PLATA, URUGUAY." PALAIOS 38, no. 3 (2023): 136–47. http://dx.doi.org/10.2110/palo.2021.070.

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ABSTRACT Rapana venosa (Valenciennes, 1846) is an invasive gastropod, the arrival of which in the Río de La Plata estuary 22 years ago is well-documented. Rapana venosa shells were collected during two sampling events from four beaches with different substrate types and wave energy regimes to compare the taphonomic attributes under different environmental conditions. We analyzed the samples by comparing frequencies of taphonomic attributes. Our results show that intermediate-reflective beaches with rocky substrates were dominated by intermediate- to highly fragmented specimens, with high corra

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Peel, John S. "An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia)." Journal of Paleontology 95, S83 (2021): 1–41. http://dx.doi.org/10.1017/jpa.2020.112.

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AbstractAn assemblage of 50 species of small shelly fossils is described from Cambrian Series 2 (Stage 4) strata in North Greenland, the present day northernmost part of the paleocontinent of Laurentia. The fossils are derived from the basal member of the Aftenstjernesø Formation at Navarana Fjord, northern Lauge Koch Land, a condensed unit that accumulated in a sediment-starved outer ramp setting in the transarctic Franklinian Basin, on the Innuitian margin of Laurentia. Most other small shelly fossil assemblages of similar age and composition from North America are described from the Iapetan

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Betts, Marissa J., Thomas M. Claybourn, Glenn A. Brock, James B. Jago, Christian B. Skovsted, and John R. Paterson. "Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia." Acta Palaeontologica Polonica 64, no. 3 (2019): 489–522. https://doi.org/10.4202/app.00586.2018.

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Betts, Marissa J., Claybourn, Thomas M., Brock, Glenn A., Jago, James B., Skovsted, Christian B., Paterson, John R. (2019): Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Acta Palaeontologica Polonica 64 (3): 489-522, DOI: 10.4202/app.00586.2018, URL: http://dx.doi.org/10.4202/app.00586.2018

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Toom, U., O. Vinn, M. Isakar, A. Madison, and O. Hints. "Small faecal pellets in Ordovician shelly fossils from Estonia, Baltoscandia." Estonian Journal of Earth Sciences 69, no. 1 (2019): 1. http://dx.doi.org/10.3176/earth.2020.01.

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Toom, U., O. Vinn, M. Isakar, A. Madison, and O. Hints. "Small faecal pellets in Ordovician shelly fossils from Estonia, Baltoscandia." Estonian Journal of Earth Sciences 69, no. 1 (2019): 1. http://dx.doi.org/10.3176/earth.2020.1.

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ZHANG, XING LIANG, and HONG HUA. "Soft-bodied fossils from the Shipai Formation, Lower Cambrian of the Three Gorge area, South China." Geological Magazine 142, no. 6 (2005): 699–709. http://dx.doi.org/10.1017/s0016756805000518.

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Mudstones and shales in the Lower Cambrian Shipai Formation in the Three Gorge area, Hubei, China, are richly fossiliferous, containing common shelly fossils and some soft-bodied fossils. The latter provide important new information about the nature and variety of Cambrian soft-bodied organisms. Identifiable, non-mineralized taxa include components of the Chengjiang fauna, such as Vetulicola Hou, 1987, a palaeoscolecidan referable to Maotianshania Sun & Hou, 1987, and a brachiopod Diandongiapista with pedicle preserved (not illustrated). Cambrorhytium Conway Morris & Robison, 1988, co-

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Tiwari, Meera. "Nabaviella acanthomorpha N. Sp, a Sponge Spicule from the Precambrian-Cambrian Boundary Interval in the Tethys Sequence of Northwestern Kashmir." Journal Geological Society of India 50, no. 5 (1997): 655–58. http://dx.doi.org/10.17491/jgsi/1997/500517.

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Abstract A new species of sponge spicule Nabaviella acanthomorpha is described here, which occurs in association with an assemblage of small shelly fossils (SSF) from the Precambrian-Cambrian boundary sequence, exposed in Pohru Valley of northwestern Kashmir, with an obvious biostratigraphic potential to understand the Precambrian-Cambrian boundary in the succession.

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NOWLAN, GODFREY S., GUY M. NARBONNE, and WILLIAM H. FRITZ. "Small shelly fossils and trace fossils near the Precambrian-Cambrian boundary in the Yukon Territory, Canada." Lethaia 18, no. 3 (1985): 233–56. http://dx.doi.org/10.1111/j.1502-3931.1985.tb00701.x.

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Ajar, Dhyaaldain K., and Maher M. Mahdi. "A Comparative Analysis and Environmental Interpretation of the First Cycle of Nfayil Formation in Two Distinct Southern Desert Locations, Iraq." IOP Conference Series: Earth and Environmental Science 1300, no. 1 (2024): 012039. http://dx.doi.org/10.1088/1755-1315/1300/1/012039.

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Abstract Nfayil Formation (Middle Miocene) is considered the equivalent of Fatha Formation; it is exposed in the western and southern Desert of Iraq with two members: a carbonate Lower Member that is composed of three cycles of limestone and marlstone intercalation and an Upper clastic Member of sandstone and claystone with thin layers of limestone. It extends from the western to the southern desert with a systematic succession of two or three cycles of lower members each one consisting of an interbedding of soft olive-green marl with medium tough shelly limestone rich with oyster shells. The

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Wang, Guangxu, Renbin Zhan, Ian G. Percival, Bing Huang, Yue Li, and Rongchang Wu. "Late Hirnantian (latest Ordovician) carbonate rocks and shelly fossils in Shiqian, northeastern Guizhou, Southwest China." Newsletters on Stratigraphy 48, no. 3 (2015): 241–52. http://dx.doi.org/10.1127/nos/2015/0062.

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Kouchinsky, Artem, Stefan Bengtson, and Lisa-ann Gershwin. "Cnidarian-like embryos associated with the first shelly fossils in Siberia." Geology 27, no. 7 (1999): 609. http://dx.doi.org/10.1130/0091-7613(1999)027<0609:cleawt>2.3.co;2.

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Cocks, L. R. M., and Roger A. Cooper. "Late Ordovician (Hirnantian) shelly fossils from New Zealand and their significance." New Zealand Journal of Geology and Geophysics 47, no. 1 (2004): 71–80. http://dx.doi.org/10.1080/00288306.2004.9515038.

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Jiang Zhiwen. "Evolution of shelly fossils and the end of the late precambrian." Precambrian Research 29, no. 1-3 (1985): 45–52. http://dx.doi.org/10.1016/0301-9268(85)90058-0.

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Martí Mus, Mónica. "Interpreting ‘shelly’ fossils preserved as organic films: the case of hyolithids." Lethaia 47, no. 3 (2014): 397–404. http://dx.doi.org/10.1111/let.12066.

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Azmi, R. J. "Discovery of Lower Cambrian Small Shelly Fossils and Brachiopods from the Lower Vindhyan of Son Valley, Central India." Journal Geological Society of India 52, no. 4 (1998): 381–89. http://dx.doi.org/10.17491/jgsi/1998/520402.

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Abstract R. J. Azmi of the Wadia Institute of Himalayan Geology here reports the discovery of small shelly fossils and brachiopods of lower Cambrian affinity from the topmost Rohtasgarh Limestone at Maihar and Rohtas in the Son Valley. This discovery is of importance as it necessitates a revision in the age of the Vindhyan succession. We welcome a discussion on this subject - Ed.

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Gutiérrez-Marco, Juan Carlos, Artur A. Sá, Isabel Rábano, et al. "Iberian Ordovician and its international correlation." Stratigraphy 12, no. 3-4 (2016): 257–64. http://dx.doi.org/10.29041/strat.12.4.04.

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The regional chronostratigraphy of the British Ordovician, established mainly for shelly facies, is hard to correlate in the Iberian Peninsula, especially after the separation and drift of Avalonia from Gondwana by the early Middle Ordovician. The same applies to the Ordovician global scale, whose stratotypes involve deeper-water facies and faunas not recorded in the high-paleolatitudinal settings of southern peri-Gondwana. In order to solve the problem, an alternative regional scheme for the "Mediterranean" Ordovician was proposed in the 1970s. This comprises five regional stages plus the glo

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Wotte, Thomas, and Frederick A. Sundberg. "Small shelly fossils from the Montezuman–Delamaran of the Great Basin in Nevada and California." Journal of Paleontology 91, no. 5 (2017): 883–901. http://dx.doi.org/10.1017/jpa.2017.8.

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AbstractThe mixed carbonate-siliciclastic successions of the Cambrian Series 2–Cambrian Series 3 interval of the Great Basin are well investigated in respect to their trilobite and brachiopod fauna. In contrast, the small shelly fossils have been mostly unreported. Nine sections in eastern California and southern Nevada have produced a small shelly assemblage of low diversity, which likely reflects non-phosphatization and loss of originally calcareous remains. From the Montezuman–Delamaran stages we reportAnabarella chelataSkovsted, 2006a,Costipelagiella nevadenseSkovsted, 2006a,Pelagiellaaff.

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García-Bellido Capdevila, D. "The Burgess Shale fossils at the Natural History Museum, London." Geological Curator 7, no. 4 (2000): 141–48. http://dx.doi.org/10.55468/gc444.

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The fossils from Burgess Shale (British Columbia) and other exceptionally preserved Cambrian faunas have been the focus of intensive research in the last couple of decades. They reveal insights into a time and into a world where animals began to thrive more than 500 million years ago. They give palaeontologists a more complete picture of the diversity of the Middle Cambrian biota, where soft-bodied animals were surprisingly more numerous than shelly organisms. The Natural History Museum, London contains important palaeontological reference collections of worldwide significance. Among these wer

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Jacobs, Gabriel S., Sarah Monique Jacquet, Tara Selly, James D. Schiffbauer, and John Warren Huntley. "Resolving taphonomic and preparation biases in silicified faunas through paired acid residues and X-ray microscopy." PeerJ 12 (February 1, 2024): e16767. http://dx.doi.org/10.7717/peerj.16767.

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Paired petrography and acid maceration has shown that preferential silicification of shelly faunas can bias recovery based on taxon and body size. Here, silicified fossils from the Upper Ordovician Edinburg Formation, Strasburg Junction, Virginia, USA, were analyzed using X-ray tomographic microscopy (μCT) in conjunction with recovered residues from acid maceration of the same materials to further examine sources of potential bias. Results reveal that very small (<~1 mm) fossils are poorly resolved in μCT when scanning at lower resolutions (~30 µm), underestimating abundance of taxa includi

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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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Kowalewski, Michał, and Karl W. Flessa. "A predatory drillhole in Glottidia palmeri Dall (Brachiopoda; Lingulidae) from Recent tidal flats of northeastern Baja California, Mexico." Journal of Paleontology 68, no. 6 (1994): 1403–5. http://dx.doi.org/10.1017/s0022336000034375.

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Predatory drillholes (boreholes) are known from fossils as old as the late Precambrian (Bengtson and Zhao, 1992). The presence of predatory drillholes has been documented in a large number of shelly invertebrates including bivalves, gastropods, scaphopods, crabs, ostracodes, brachiopods, and many others (e.g., Sohl, 1969; Bishop, 1975; Bromley, 1981; Vermeij, 1987; Kabat, 1990; and references therein). We document here, for the first time, a drillhole in a lingulid brachiopod.

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Landing, Ed, and Kenneth E. Bartowski. "Oldest shelly fossils from the Taconic Allochthon and late Early Cambrian sea-levels in eastern Laurentia." Journal of Paleontology 70, no. 5 (1996): 741–61. http://dx.doi.org/10.1017/s0022336000023799.

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Continental slope facies in eastern New York have the most diverse small shelly faunas known in Laurentian late Early Cambrian strata. Diversity of a lower Elliptocephala asaphoides assemblage, the oldest body fauna in the Taconic allochthon, reflects turbidity current exhumation, transport, and deposition of phosphatized fossil hash in a proximal facies of the Browns Pond Formation. Phosphatization is linked to the first of two Olenellus Chron intervals with a thickened dysaerobic water mass on the slope. This interval of increased rate of sea-level rise corresponds to development of extensiv

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