Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous)
International audience Hemihoplitidae evolution is well documented in the north-west Tethyan margin at the lower upper Barremian. In this context, the genus Lenicostites gen. nov. (L. rusticus), with ‘hemihoplitid-like’ morphology, is unexpected because of its age older than the earliest Hemihoplite...
Published in: | Cretaceous Research |
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Main Authors: | , , |
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Language: | English |
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HAL CCSD
2020
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Online Access: | https://insu.hal.science/insu-02283637 https://insu.hal.science/insu-02283637/document https://insu.hal.science/insu-02283637/file/Bert-CretRes-2019.pdf https://doi.org/10.1016/j.cretres.2019.104239 |
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ftunivrennes1hal:oai:HAL:insu-02283637v1 |
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institution |
Open Polar |
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Université de Rennes 1: Publications scientifiques (HAL) |
op_collection_id |
ftunivrennes1hal |
language |
English |
topic |
Pareto-optimal solution ammonites homeomorphy Early Cretaceous systematics competition [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
spellingShingle |
Pareto-optimal solution ammonites homeomorphy Early Cretaceous systematics competition [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Bert, Didier Bersac, Stéphane Canut, Léon Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous) |
topic_facet |
Pareto-optimal solution ammonites homeomorphy Early Cretaceous systematics competition [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
description |
International audience Hemihoplitidae evolution is well documented in the north-west Tethyan margin at the lower upper Barremian. In this context, the genus Lenicostites gen. nov. (L. rusticus), with ‘hemihoplitid-like’ morphology, is unexpected because of its age older than the earliest Hemihoplites and its evolutionary stasis that contrasts with the rapid changes of the Hemihoplitidae. Data show no connection between Hemihoplitidae and Lenicostitidae fam. nov. and the resemblance is homeomorphy. The numerous reported occurrences of Hemihoplitinae over the world are reviewed. Their critical revision shows that some of them are contradictory with the evolutionary history of the group. The ‘hemihoplitid-like’ morphology is iterative in several taxa without any phyletic links (homeomorphy). Reasons could be linked to the morphospace occupation in the zone of maximum equilibrium between different constraints (a Pareto-optimal solution), making such morphology effortless to reproduce. The Austral Homeomorphitinae subfam. nov. (with Homeomorphites aguirreurretae gen. nov. et sp. nov.) are assigned to the Neocomitidae. A phyletic link between Shasticrioceras and Antarcticoceras is suggested (Shasticrioceratidae fam. nov.). Until proven otherwise, there is no Hemihoplitinae outside the north and west margins of the Tethys (including the Essaouira Basin). Homeomorphy between Hemihoplitinae and Lenicostitidae fam. nov. is explored and convergence seems the most convincing hypothesis. The further appearance of Camereiceras (Hemihoplitinae) could establish favorable conditions for interspecific competition, and the disappearance of Lenicostites gen. nov. could be interpreted as a complete competitive replacement. In this hypothesis Lenicostites gen. nov. is a victim of the Gause Principle as it lost the Red Queen race. |
author2 |
Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Laboratoire du Groupe de recherche en Paléobiologie et biostratigraphie des Ammonites (GPA) Geological National Nature Reserve of Haute-Provence Alpes de Haute-Provence G.P.A. |
format |
Article in Journal/Newspaper |
author |
Bert, Didier Bersac, Stéphane Canut, Léon |
author_facet |
Bert, Didier Bersac, Stéphane Canut, Léon |
author_sort |
Bert, Didier |
title |
Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous) |
title_short |
Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous) |
title_full |
Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous) |
title_fullStr |
Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous) |
title_full_unstemmed |
Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous) |
title_sort |
implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late tethyan barremian (early cretaceous) |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://insu.hal.science/insu-02283637 https://insu.hal.science/insu-02283637/document https://insu.hal.science/insu-02283637/file/Bert-CretRes-2019.pdf https://doi.org/10.1016/j.cretres.2019.104239 |
geographic |
Austral |
geographic_facet |
Austral |
genre |
Antarc* |
genre_facet |
Antarc* |
op_source |
ISSN: 0195-6671 EISSN: 1095-998X Cretaceous Research https://insu.hal.science/insu-02283637 Cretaceous Research, 2020, 106, pp.104239. ⟨10.1016/j.cretres.2019.104239⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2019.104239 insu-02283637 https://insu.hal.science/insu-02283637 https://insu.hal.science/insu-02283637/document https://insu.hal.science/insu-02283637/file/Bert-CretRes-2019.pdf doi:10.1016/j.cretres.2019.104239 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.cretres.2019.104239 |
container_title |
Cretaceous Research |
container_volume |
106 |
container_start_page |
104239 |
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1790594218264100864 |
spelling |
ftunivrennes1hal:oai:HAL:insu-02283637v1 2024-02-11T09:58:32+01:00 Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous) Bert, Didier Bersac, Stéphane Canut, Léon Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Laboratoire du Groupe de recherche en Paléobiologie et biostratigraphie des Ammonites (GPA) Geological National Nature Reserve of Haute-Provence Alpes de Haute-Provence G.P.A. 2020-02 https://insu.hal.science/insu-02283637 https://insu.hal.science/insu-02283637/document https://insu.hal.science/insu-02283637/file/Bert-CretRes-2019.pdf https://doi.org/10.1016/j.cretres.2019.104239 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2019.104239 insu-02283637 https://insu.hal.science/insu-02283637 https://insu.hal.science/insu-02283637/document https://insu.hal.science/insu-02283637/file/Bert-CretRes-2019.pdf doi:10.1016/j.cretres.2019.104239 info:eu-repo/semantics/OpenAccess ISSN: 0195-6671 EISSN: 1095-998X Cretaceous Research https://insu.hal.science/insu-02283637 Cretaceous Research, 2020, 106, pp.104239. ⟨10.1016/j.cretres.2019.104239⟩ Pareto-optimal solution ammonites homeomorphy Early Cretaceous systematics competition [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology info:eu-repo/semantics/article Journal articles 2020 ftunivrennes1hal https://doi.org/10.1016/j.cretres.2019.104239 2024-01-23T23:52:36Z International audience Hemihoplitidae evolution is well documented in the north-west Tethyan margin at the lower upper Barremian. In this context, the genus Lenicostites gen. nov. (L. rusticus), with ‘hemihoplitid-like’ morphology, is unexpected because of its age older than the earliest Hemihoplites and its evolutionary stasis that contrasts with the rapid changes of the Hemihoplitidae. Data show no connection between Hemihoplitidae and Lenicostitidae fam. nov. and the resemblance is homeomorphy. The numerous reported occurrences of Hemihoplitinae over the world are reviewed. Their critical revision shows that some of them are contradictory with the evolutionary history of the group. The ‘hemihoplitid-like’ morphology is iterative in several taxa without any phyletic links (homeomorphy). Reasons could be linked to the morphospace occupation in the zone of maximum equilibrium between different constraints (a Pareto-optimal solution), making such morphology effortless to reproduce. The Austral Homeomorphitinae subfam. nov. (with Homeomorphites aguirreurretae gen. nov. et sp. nov.) are assigned to the Neocomitidae. A phyletic link between Shasticrioceras and Antarcticoceras is suggested (Shasticrioceratidae fam. nov.). Until proven otherwise, there is no Hemihoplitinae outside the north and west margins of the Tethys (including the Essaouira Basin). Homeomorphy between Hemihoplitinae and Lenicostitidae fam. nov. is explored and convergence seems the most convincing hypothesis. The further appearance of Camereiceras (Hemihoplitinae) could establish favorable conditions for interspecific competition, and the disappearance of Lenicostites gen. nov. could be interpreted as a complete competitive replacement. In this hypothesis Lenicostites gen. nov. is a victim of the Gause Principle as it lost the Red Queen race. Article in Journal/Newspaper Antarc* Université de Rennes 1: Publications scientifiques (HAL) Austral Cretaceous Research 106 104239 |