First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece
Abstract Due to the lower fossilization potential of chitin, non-mineralized cephalopod jaws and arm hooks are much more rarely preserved as fossils than the calcitic lower jaws of ammonites or the calcitized jaw apparatuses of nautilids. Here, we report such non-mineralized fossil jaws and arm hook...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-12-01
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| Series: | Swiss Journal of Palaeontology |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13358-020-00210-y |
| _version_ | 1797789554595332096 |
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| author | Christian Klug Donald Davesne Dirk Fuchs Thodoris Argyriou |
| author_facet | Christian Klug Donald Davesne Dirk Fuchs Thodoris Argyriou |
| author_sort | Christian Klug |
| collection | DOAJ |
| description | Abstract Due to the lower fossilization potential of chitin, non-mineralized cephalopod jaws and arm hooks are much more rarely preserved as fossils than the calcitic lower jaws of ammonites or the calcitized jaw apparatuses of nautilids. Here, we report such non-mineralized fossil jaws and arm hooks from pelagic marly limestones of continental Greece. Two of the specimens lie on the same slab and are assigned to the Ammonitina; they represent upper jaws of the aptychus type, which is corroborated by finds of aptychi. Additionally, one intermediate type and one anaptychus type are documented here. The morphology of all ammonite jaws suggest a desmoceratoid affinity. The other jaws are identified as coleoid jaws. They share the overall U-shape and proportions of the outer and inner lamellae with Jurassic lower jaws of Trachyteuthis (Teudopseina). We also document the first belemnoid arm hooks from the Tethyan Maastrichtian. The fossils described here document the presence of a typical Mesozoic cephalopod assemblage until the end of the Cretaceous in the eastern Tethys. |
| first_indexed | 2024-03-13T01:52:20Z |
| format | Article |
| id | doaj.art-3ccdb80624414b4488f793de9be2544c |
| institution | Directory Open Access Journal |
| issn | 1664-2376 1664-2384 |
| language | English |
| last_indexed | 2024-03-13T01:52:20Z |
| publishDate | 2020-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Swiss Journal of Palaeontology |
| spelling | doaj.art-3ccdb80624414b4488f793de9be2544c2023-07-02T11:26:08ZengSpringerOpenSwiss Journal of Palaeontology1664-23761664-23842020-12-01139112713910.1186/s13358-020-00210-yFirst record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, GreeceChristian Klug0Donald Davesne1Dirk Fuchs2Thodoris Argyriou3Paläontologisches Institut Und Museum, Universität ZürichDepartment of Earth Sciences, University of OxfordSNSB-Bayerische Staatssammlung für Paläontologie und GeologieUMR 7207 (MNHN - Sorbonne Université - CNRS) Centre de Recherche en Paléontologie - Paris, Muséum National D’Histoire NaturelleAbstract Due to the lower fossilization potential of chitin, non-mineralized cephalopod jaws and arm hooks are much more rarely preserved as fossils than the calcitic lower jaws of ammonites or the calcitized jaw apparatuses of nautilids. Here, we report such non-mineralized fossil jaws and arm hooks from pelagic marly limestones of continental Greece. Two of the specimens lie on the same slab and are assigned to the Ammonitina; they represent upper jaws of the aptychus type, which is corroborated by finds of aptychi. Additionally, one intermediate type and one anaptychus type are documented here. The morphology of all ammonite jaws suggest a desmoceratoid affinity. The other jaws are identified as coleoid jaws. They share the overall U-shape and proportions of the outer and inner lamellae with Jurassic lower jaws of Trachyteuthis (Teudopseina). We also document the first belemnoid arm hooks from the Tethyan Maastrichtian. The fossils described here document the presence of a typical Mesozoic cephalopod assemblage until the end of the Cretaceous in the eastern Tethys.https://doi.org/10.1186/s13358-020-00210-yCephalopodaAmmonoideaDesmoceratoideaColeoideaMaastrichtianTaphonomy |
| spellingShingle | Christian Klug Donald Davesne Dirk Fuchs Thodoris Argyriou First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece Swiss Journal of Palaeontology Cephalopoda Ammonoidea Desmoceratoidea Coleoidea Maastrichtian Taphonomy |
| title | First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece |
| title_full | First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece |
| title_fullStr | First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece |
| title_full_unstemmed | First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece |
| title_short | First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece |
| title_sort | first record of non mineralized cephalopod jaws and arm hooks from the latest cretaceous of eurytania greece |
| topic | Cephalopoda Ammonoidea Desmoceratoidea Coleoidea Maastrichtian Taphonomy |
| url | https://doi.org/10.1186/s13358-020-00210-y |
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