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Journal articles on the topic 'Phylloceratida'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Joly, Bernard. "Les Juraphyllitidae, Phylloceratidae, Neophylloceratidae (Phyllocerataceae, Phylloceratina, Ammonoidea) de France au Jurassique et au Crétacé." Geobios 33 (2000): 5–204. http://dx.doi.org/10.1016/s0016-6995(00)80001-7.

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2

Dommergues, Jean-Louis, and Christian Meister. "Significance of intermediate forms in phyletic reconstruction of ammonites: Early Jurassic Phricodoceras case study." Acta Palaeontologica Polonica 58, no. 4 (2012): 837–54. https://doi.org/10.4202/app.2011.0148.

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Dommergues, Jean-Louis, Meister, Christian (2013): Significance of intermediate forms in phyletic reconstruction of ammonites: Early Jurassic Phricodoceras case study. Acta Palaeontologica Polonica 58 (4): 837-854, DOI: 10.4202/app.2011.0148, URL: http://dx.doi.org/10.4202/app.2011.0148

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3

Joly, Bernard, Horacio Parent, and Alberto C. Garrido. "Aalenian phylloceratid ammonites from Picún Leufú, Neuquén Basin, Argentina." Revue de Paléobiologie 42, no. 1 (2023): 143–48. https://doi.org/10.5281/zenodo.7446073.

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Aalenian-Bajocian phylloceratid ammonites, typically oceanic, are being increasingly recorded in the Neuquén Basin. In this paper we describe three species, one of them new: Costiphylloceras limayense n. sp. The other two are: Phylloceras perplanum (Prinz) and Calliphylloceras cf. achtalense (Redlich). According to the literature Calliphylloceras and Phylloceras are the most common phylloceratid genera in the Andean Aalenian.

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4

Joly, Bernard. "Les Phylloceratina et Lytoceratina (Ammonoidea) du Bajocien inférieur du Paso del Espinacito (Argentine). Étude paléontologique et implications paléogéographiques." Bulletin de la Société Géologique de France 183, no. 3 (2012): 251–65. http://dx.doi.org/10.2113/gssgfbull.183.3.251.

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Abstract Les faunes étudiées dans la présente note ont été citées et figurées, leurs niveaux de récolte ainsi que les faunes accompagnatrices ont été précisés, dans un mémoire qui vient de paraître [Dietze et al., 2010]. La présente note complète ce mémoire en apportant une étude systématique et paléontologique sur les Phylloceratina et Lytoceratina du col d’Espinacito (Argentine). Il était également intéressant de les comparer à celles d’autres régions du monde : Europe, Afrique, Amérique du Nord, Asie. Les Phylloceratina et Lytoceratina d’Espinacito ont principalement des affinités avec les

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5

Tanabe, Kazushige, Akihiro Misaki, Neil H. Landman, and Taichi Kato. "The jaw apparatuses of Cretaceous Phylloceratina (Ammonoidea)." Lethaia 46, no. 3 (2013): 399–408. http://dx.doi.org/10.1111/let.12017.

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6

Jolyet, Bernard, and Cyril Baudouin. "Discovery of two coloured Phylloceratidae belonging to the genus Adabofoloceras Joly, 1977. Hypotheses on the relationships between colour patterns of the shell and mode of life." Bulletin de la Société Géologique de France 177, no. 1 (2006): 51–59. http://dx.doi.org/10.2113/177.1.51.

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Abstract Until now the references of coloured specimens in the scientific publications about Juraphyllitidae, Phylloceratidae and Neophylloceratidae are not very numerous. The recent discovery of Adabofoloceras ardechicum (Munier-Chalmas, in Collot, 1880) and Adabofoloceras chantrei (Munier-Chalmas, in Collot, 1880) fills a part of this gap. The new findings allow to compare with coloured specimens published before, above all with the Calliphylloceras of the Kutch and with a Calliphylloceras demidoffi (Rousseau, 1842) of Upper Bathonian of Malagasy. Like every coloured specimen published befor

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7

Galácz, András. "On a Middle Jurassic phylloceratid ammonite from the Bakony Mts (Hungary)." Földtani Közlöny 153, no. 1 (2023): 15–18. http://dx.doi.org/10.23928/foldt.kozl.2023.153.1.15.

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Unknown fossil collections from the Bakony Mts, collected by J. Nosky Jnr. during his mapping activity in the 1940s and 1950s were found in the storage facility of the Hungarian Geological Institute in the 2010s. In these materials from the Upper Bajocian (Middle Jurassic) from the Som-hegy of Bakonybél (formerly known as part of Pénzeskút) some specimens were determined by Nosky in 1959 as ‘Canaliphylloceras’ nov. gen. nov. sp.’ However, Nosky never published these faunal studies, and his designations have only been preserved as notes written on the labels of the specimens. The same form iden

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8

Zaitsev, B. A., A. P. Ippolitov, and Д. Б. Гуляев. "Early Jurassic (Sinemurian) Ammonoids from the Boulders of the Greek Quarry, Central Crimea." Стратиграфия 31, no. 4 (2023): 3–60. http://dx.doi.org/10.31857/s0869592x23040063.

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The Sinemurian ammonoids from the boulders in the Greek quarry (Salgir River basin, south-east of Simferopol city) are described. The assemblages are represented by Phylloceratidae (Phylloceras, Zetoceras and Partschiceras), Juraphyllitidae (Juraphyllites and Paradasyceras), Schlotheimiidae (Phricodoceras), Arietitidae (Coroniceras, Metophioceras, Arnioceras and Asteroceras), Oxynoticeratidae (Gleviceras), Echioceratidae (Plesechioceras, Orthechioceras, Echioceras and Paltechioceras), Eoderoceratidae (Eoderoceras), Epideroceratidae (Epideroceras) and, questionably, Coeloceratidae (?Tetraspidoc

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9

Iwasaki, Tetsuro, Yui Iwasaki, and Ryoji Wani. "Polymorphism in Late Cretaceous phylloceratid ammonoids: evidence from ontogenetic trajectories of septal spacing." Papers in Palaeontology 6, no. 1 (2019): 155–72. http://dx.doi.org/10.1002/spp2.1266.

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10

Metodiev, Lubomir. "Toarcian and Aalenian ammonites in a part of the Western Stara Planina Mts., Bulgaria (taxonomy, stratigraphy)." Geologica Balcanica 27, no. 3-4 (1997): 3–31. http://dx.doi.org/10.52321/geolbalc.27.3-4.3.

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This paper presents biostratigraphic data on the Toarcian and Aalenian ammonites in the clayeycalcareous and marly sediments of the Boukorovtsi Member of the Ozirovo Formation and Etropole Formation in a part of the Western Stara Planina Mts. Harpoceras falciferum, Hildoceras bifrons, Haugia variabilis,Grammoceras thouarsense, Dumortieria levesquei, Dumortieria moorei, Pleydellia aalensis, Ludwigia murchisonae and Graphoceras concavum Zones have been established and described. That zonal scheme has been correlated to the zonations of different authors in the North-West Europe. About 40 species

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11

Birkelund, T. "Ammonites from the Maastrichtian White Chalk of Denmark." Bulletin of the Geological Society of Denmark 40 (June 3, 1993): 33–81. http://dx.doi.org/10.37570/bgsd-1994-40-02.

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Nineteen ammonite species are described or recorded from the Maastrichtian White Chalk of Denmark: Hypophyl/oceras (Neophylloceras) surya (Forbes, 1846), H. (N.) velledaeforme (Schliiter, 1872), Anagaudryceras luenebergense (Schliiter, 1872), Saghalinites wrighti Birkelund, 1965, Saghalinites n. sp., Pachydiscus (Pachydiscus) neubergicus (Hauer, 1858), Anapachydiscus aff. fresvillensis (Seunes, 1890), Glyptoxoceras cf. tenuisulcatum(Forbes, 1846), Diplomoceras cylindraceum (Defrance, 1816), P. (Phyl/optychoceras) sp., Baculites knorrianus Desmarest, 1817, B. vertebra/is Lamarck, 1801, Baculi

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12

Raoufian, Ahmad, Bernard Joly, Kazem Seyed–Emami, Ali Reza Ashouri, Mahmoud Reza Majidifard, and Hamed Ameri. "Phylloceratoidea du Jurassique moyen et supérieur du Nord-Est de l’Iran (Monts Binalud)." Annales de Paléontologie 100, no. 4 (2014): 311–25. http://dx.doi.org/10.1016/j.annpal.2014.02.003.

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13

Meister, Christian, Jan Schlögl, and Milos Rakús. "Sinemurian ammonites from Male Karpaty Mts., Western Carpathians, Slovakia. Part 1: Phylloceratoidea, Lytoceratoidea, Schlotheimiidae." Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 259, no. 1 (2011): 25–88. http://dx.doi.org/10.1127/0077-7749/2010/0105.

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14

Lukeneder, Petra, and Alexander Lukeneder. "Sinemurian biostratigraphy of the Tannscharten section near Reichraming (Lower Jurassic, Schneeberg Syncline, Northern Calcareous Alps)." Austrian Journal of Earth Sciences 111, no. 1 (2018): 92–110. http://dx.doi.org/10.17738/ajes.2018.0007.

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Abstract Lower Jurassic ammonites were collected from deep-water limestones of the Tannscharten section, southwest of Reichraming (Northern Calcareous Alps, Upper Austria). The outcrop provides a rich Upper Sinemurian (Lower Jurassic) ammonite fauna of the Allgäu Formation. The area is situated in the westernmost part of the Schneeberg Syncline in the north of the Reichraming Nappe (High Bajuvaric Unit). The ammonite fauna consists of seven different genera, each apparently represented by 1-2 species. Echioceratids are the most frequent components (Echioceras, Leptechioceras, Paltechioceras),

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15

Sandoval, Jose, Maria Helena Henriques, Soledad Ureta, Antonio Goy, and Pascual Rivas. "The Lias/Dogger boundary in Iberia; Betic and Iberian cordilleras and Lusitanian Basin." Bulletin de la Société Géologique de France 172, no. 4 (2001): 387–95. http://dx.doi.org/10.2113/172.4.387.

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Abstract In this paper we present a synthesis on the Toarcian/Aalenian (Lias/Dogger) boundary in the Iberian Peninsula. We have selected in each domain the most representative areas and sections in which this boundary is represented: Fuentelsaz and Moyuela sections in the Iberian Cordillera, Sierra de Ricote and Cerro Mendez in the Betic Cordillera, and Sao Giao in the Lusitanian Basin. In these areas the succession across the Toarcian/Aalenian boundary is represented mainly by pelagic grey marl-marly limestone rhythmites, which contain abundant and characteristic ammonites. The standard ammon

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16

Bujtor, László, and Richárd Albrecht. "Latest Oxfordian – earliest Kimmeridgian ammonite dominated fauna and microfacies from the ammonitico rosso-type Fonyászó Limestone Formation at Zengővárkony (Mecsek Mountains, Hungary)." Volumina Jurassica 19 (2021): 61–94. http://dx.doi.org/10.7306/vj.19.3.

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Field work has resulted in the recognition of a previously unknown outcrop in the vicinity of the Zengővárkony lime-kilns (Mecsek Mountains, South Hungary) which has provided a remarkably rich, but poorly preserved, uppermost Oxfordian – earliest Kimmeridgian fauna dominated by ammonites probably representing the Hypselum–Bimammatum zones. This is the first description and illustration of Oxfordian–Kimmeridgian ammonites from the Mecsek Mountains. The cephalopod fauna comprises Phylloceras div. sp., Holcophylloceras div. sp., Sowerbyceras sp., Lytoceras sp., Lissoceratoides erato, Trimarginite

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17

Raisossadat, Seyed Naser. "Ammonite families Phylloceratidae, Gaudryceratidae, Oppeliidae and Desmoceratidae from Kopet Dagh Basin NE of Iran; Palaeobiogeographical and palaeoecological application." Annales de Paléontologie 110, no. 2 (2024): 102635. http://dx.doi.org/10.1016/j.annpal.2023.102635.

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18

Vašíček, Zdeněk, Dragoman Rabrenović, Petr Skupien, Vladan J. Radulović, Barbara V. Radulović, and Ivana Mojsić. "Ammonites (Phylloceratina, Lytoceratina and Ancyloceratina) and organic-walled dinoflagellate cysts from the Late Barremian in Boljetin, eastern Serbia." Cretaceous Research 47 (January 2014): 140–59. http://dx.doi.org/10.1016/j.cretres.2013.10.007.

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19

Bardhan, Subhendu, Sudipta K. Jana, and Kalyanbrata Datta. "Preserved color pattern of a phylloceratid ammonoid from the Jurassic Chari Formation, Kutch, India, and its functional significance." Journal of Paleontology 67, no. 1 (1993): 140–43. http://dx.doi.org/10.1017/s0022336000021260.

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Preservation of pristine pigmentation in fossil shells is a rare phenomenon (Teichert, 1964) and fossilization accompanied by recrystallization often renders the primary color bands indiscernible (Shrock and Twenhofel, 1953). Nevertheless, there are reports on color markings in fossil shells ranging from the Middle Cambrian to Holocene (Hoare, 1978; Mapes and Hoare, 1987; Kobluk and Mapes, 1989).

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20

Ettaki, Mohammed, Benali Ouahhabi, Jean-Louis Dommergues, Christian Meister, and El Hassane Chellaï. "Analyses biostratigraphiques dans le Lias de la bordure sud de la Téthys méditerranéenne: l’exemple de la frange méridionale du Haut-Atlas central (Maroc)." Bulletin de la Société Géologique de France 182, no. 6 (2011): 521–32. http://dx.doi.org/10.2113/gssgfbull.182.6.521.

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Abstract D’abondantes faunes d’ammonites, récoltées dans une dizaine de coupes levées dans les séries liasiques de la bordure méridionale du Haut-Atlas central (Todrha-Dadès), ont permis d’élaborer une échelle biostratigraphique assez précise et de suivre l’évolution paléogéographique de cette région de la bordure sud de la Téthys méditerranéenne. La faune d’ammonites recueillie dans le Haut-Atlas de Todrha-Dadès compte une quarantaine de taxons spécifiques appartenant tous à l’ordre des Psiloceratida et plus particulièrement aux superfamilles des Lytoceratoidea, des Eoderoceratoidea et des Hi

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21

Zatoń, Michał. "Bajocian-Bathonian (Middle Jurassic) ammonites from the Polish Jura - Part 1: Families Phylloceratidae, Nannolytoceratidae, Sonniniidae, Strigoceratidae, Oppeliidae and Lissoceratidae." Palaeontographica Abteilung A 292, no. 4-6 (2010): 65–113. http://dx.doi.org/10.1127/pala/292/2010/65.

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22

Fernández-López, S., and G. Meléndez. "Phylloceratina ammonoids in the Iberian Basin during the Middle Jurassic: a model of biogeographical and taphonomic dispersal related to relative sea-level changes." Palaeogeography, Palaeoclimatology, Palaeoecology 120, no. 3-4 (1996): 291–302. http://dx.doi.org/10.1016/0031-0182(95)00046-1.

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23

Landman, Neil H., Kazushige Tanabe, Wolfgang Weitschat, and Royal H. Mapes. "Ontogenetic and evolutionary patterns of septal neck transformation in the Ammonoidea." Paleontological Society Special Publications 6 (1992): 175. http://dx.doi.org/10.1017/s2475262200007358.

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Four types of septal necks are present in the Ammonoidea: (1) retrochoanitic (entirely projected adapically), (2) modified retrochoanitic (projected adorally or both adorally and adapically on the dorsal side and adapically on the ventral side), (3) amphichoanitic (projected both adorally and adapically), and (4) prochoanitic (entirely projected adorally). Each septal neck is continuous with the rest of the septum and consists primarily of a nacreous layer. A spherulitic-prismatic deposit called the auxiliary deposit commonly appears on the adoral side of the septal neck and covers the inner s

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Boyajian, George E., and Tim Lutz. "Evolution of biological complexity: a case study of ammonoid sutures." Paleontological Society Special Publications 6 (1992): 32. http://dx.doi.org/10.1017/s247526220000592x.

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The evolution of ammonoid sutures has long been cited as an example of the evolution of increased biological complexity. The complexity of sutures has increased, on average, but the exact nature of this increase, and any benefit associated with this increase has yet to be documented. We measure the fractal dimension of >600 ammonoid species and document the change in complexity of sutures between and among seven orders: Ammonitida, Anarcestida, Ceratitida, Clymeniida, Goniatitida, Phylloceratitida, and Prolecanitida. The average complexity of sutures and range of complexity of sutures incre

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25

Bujtor, László, Richárd Albrecht, Csaba Farkas, Bertalan Makó, Dávid Maróti, and Ákos Miklósy. "Kimmeridgian and early Tithonian cephalopods from the Kisújbánya Limestone Formation, Zengővárkony (Mecsek Mountains, southern Hungary), their faunal composition, palaeobiogeographic affinities, and taphonomic character." Carnets de géologie (Notebooks on geology) 21, no. 13 (2021): 265–314. http://dx.doi.org/10.2110/carnets.2021.2113.

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A new collection at Zengővárkony (Mecsek Mountains, Hungary) provided a rich and diverse but poorly preserved cephalopod-dominated fossil assemblage representing the Kimmeridgian and the lower Tithonian. The material came from mixed scree, soil, and amongst roots affected by weathering processes having been exposed to the elements for a long time. The nautiloid Pseudaganides strambergensis is the first record from the Mecsek Mountains. Due to the weathering, the ammonite fauna consists of mainly fragmentary and dissolved individuals that comprises 528 specimens belonging to 34 species and 30 g

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26

Neige, Pascal, Serge Elmi, and Louis Rulleau. "Existe-t-il une crise au passage Lias-Dogger chez les ammonites? Approche morphometrique par quantification de la disparite morphologique." Bulletin de la Société Géologique de France 172, no. 2 (2001): 257–64. http://dx.doi.org/10.2113/172.2.257.

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Abstract Morphological changes observed in ammonites at the Lias-Dogger (Toarcian-Aalenian) boundary are analyzed here. The study covers all known ammonites worldwide over some 2 m.y. (the last two biozones of the Toarcian: Pseudoradiosa and Aalensis and the first biozone of the Aalenian: Opalinum). Ammonite taxonomy at this boundary is still open to question, the main disagreements being over groupings at family or super-family level. The evolutionary schema developed by Tintant and Mouterde [1981] shows two main sets of Ammonitina for the time: (1) the dominant Hammatocerataceae (Graphocerat

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27

Galácz, András. "Bajocian (Middle Jurassic) ammonites of stratigraphical and palaeobiogeographical importance from Mombasa, Kenya, East Africa." Geodiversitas 39, no. 4 (2017): 717–27. https://doi.org/10.5252/g2017n4a4.

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Galácz, András (2017): Bajocian (Middle Jurassic) ammonites of stratigraphical and palaeobiogeographical importance from Mombasa, Kenya, East Africa. Geodiversitas 39 (4): 717-727, DOI: 10.5252/g2017n4a4, URL: http://dx.doi.org/10.5252/g2017n4a4

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Seyed-Emami, Kazem, Franz T. Fürsich, Markus Wilmsen, Mahmoud R. Majidifard, and Ali Shekarifard. "Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran and their palaeobiogeographical and biostratigraphical importance." Acta Palaeontologica Polonica 53, no. 2 (2008): 237–60. https://doi.org/10.4202/app.2008.0206.

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Seyed-Emami, Kazem, Fürsich, Franz T., Wilmsen, Markus, Majidifard, Mahmoud R., Shekarifard, Ali (2008): Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran and their palaeobiogeographical and biostratigraphical importance. Acta Palaeontologica Polonica 53 (2): 237-260, DOI: 10.4202/app.2008.0206, URL: http://www.app.pan.pl/article/item/app53-237.html

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29

Barroso-Barcenilla, Fernando, Miguel Telles Antunes, José Manuel Brandão, Pedro Miguel Callapez, Vanda Faria dos Santos, and Manuel Segura. "The d'Orbigny Palaeontological Collection of the National Museum of Natural History and Science, Lisbon, Portugal: Historical perspective and revision of Cretaceous Cephalopoda." Geodiversitas 40, no. 20 (2018): 505–19. https://doi.org/10.5252/geodiversitas2018v40a20.

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Barroso-Barcenilla, Fernando, Antunes, Miguel Telles, Brandão, José Manuel, Callapez, Pedro Miguel, Santos, Vanda Faria dos, Segura, Manuel (2018): The d'Orbigny Palaeontological Collection of the National Museum of Natural History and Science, Lisbon, Portugal: Historical perspective and revision of Cretaceous Cephalopoda. Geodiversitas 40 (20): 505-519, DOI: 10.5252/geodiversitas2018v40a20

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Cecca, Fabrizio, and Bérengère Savary. "Palaeontological study of Middle Oxfordian- Early Kimmeridgian (Late Jurassic) ammonites from the Rosso Ammonitico of Monte Inici (north-western Sicily, Italy)." Geodiversitas 29, no. 4 (2007): 507–48. https://doi.org/10.5281/zenodo.4651042.

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Cecca, Fabrizio, Savary, Bérengère (2007): Palaeontological study of Middle Oxfordian- Early Kimmeridgian (Late Jurassic) ammonites from the Rosso Ammonitico of Monte Inici (north-western Sicily, Italy). Geodiversitas 29 (4): 507-548, DOI: 10.5281/zenodo.4651042

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31

Nishino, Yutaro, Keisuke Komazaki, Masaki Arai, et al. "Covariable changes of septal spacing and conch shape during early ontogeny: a common characteristic between Perisphinctina and Ancyloceratina (Ammonoidea, Cephalopoda)." Journal of Paleontology, March 15, 2024, 1–13. http://dx.doi.org/10.1017/jpa.2023.96.

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Abstract We analyzed the ontogenetic trajectories of conch morphology and septal spacing between successive chambers in Cretaceous ammonoids (suborders Perisphinctina and Ancyloceratina) collected from southern India, Madagascar, and Japan. All examined species, except for the family Collignoniceratidae, exhibited similar characteristics during early ontogeny. The common ontogenetic trajectories of septal spacing show a cycle comprising an increase and a subsequent decrease in septal spacing during early ontogeny. The conch diameters at the end of the cycle were estimated to be 1–4 mm. The con

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32

Kennedy, W. James, Simon R. A. Kelly, and Simon Schneider. "Early Cenomanian ammonites from East and North-East Greenland." GEUS Bulletin 57 (August 22, 2024). http://dx.doi.org/10.34194/geusb.v57.8366.

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Early Cenomanian (100.5–95.7 Ma) ammonite faunas from East and North-East Greenland collected by the late Simon Kelly and colleagues are described. The assemblages are dominated by typically boreal Schloenbachia varians (J. Sowerby 1817). Also present are Parapuzosia (Austiniceras) austeni (Sharpe 1855) and species of more typically Tethyan genera. These include Phylloceras (Hypophylloceras) lombardense (Joly 2000), Gaudryceras (Gaudryceras) cassisianum (d’Orbigny 1850), Gaudryceras (Mesogaudryceras) leptonema (Sharpe 1855), and the hypermorphic tetragonitine Titanoleioceras boreale gen. et sp

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33

JOLY, Bernard, and Michel DELAMETTE. "Les Phylloceratoidea (Ammonoidea) aptiens et albiens du bassin vocontien (Sud-Est de la France)." Carnets de géologie (Notebooks on geology), Mémoires (2008). http://dx.doi.org/10.4267/2042/19113.

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34

Howarth, Michael. "Treatise Online no. 128: Part L, Revised, Volume 3B, Chapter 2: Systematic Descriptions of the Jurassic and Cretaceous Phylloceratoidea, Boreophylloceratoidea, and Aequiloboidea." Treatise Online, January 13, 2020. http://dx.doi.org/10.17161/to.vi.13358.

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35

JOLY, Bernard, and Philippe MERCIER. "Étude des faunes de Phylloceratoidea des marnes valanginiennes de Senez-Lioux (Alpes-de-Haute-Provence). Comparaison avec quelques localités de la Drôme et de l'Ardèche." Carnets de géologie (Notebooks on geology), no. M01 (2012). http://dx.doi.org/10.4267/2042/47505.

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36

Sandoval, José, Roque Aguado, Ángela Fraguas, and Luis O. Dogherty. "The lower/upper Bajocian boundary (Middle Jurassic) in the Casa Chimeneas section: Sierra de Ricote (Murcia Region), southern Spain." Journal of Iberian Geology, March 4, 2025. https://doi.org/10.1007/s41513-025-00277-x.

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Abstract The Lower Bajocian/Upper Bajocian transition was analysed in the Casa Chimeneas section (JRi3), Sierra de Ricote (Murcia), which is located in the Median Subbetic paleogeographic domain. This stratigraphic section, consisting of an alternation of marls and marly limestones with radiolarians, finely shelled bivalves, Zoophycos and frequent ammonites, represents the best stratigraphic sequence of the Subbetic (Betic Range) and, also possibly, of the Mediterranean province (westernmost Tethyan Realm) to carry out this analysis. Ammonite have been sampled since the 90s increasing the coll

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