Ontogenetic variability of the intertympanic sinus distinguishes lineages within Crocodylia
Université de Fribourg DOKPE
- Perrichon, Gwendal ORCID Université Claude Bernard Lyon 1, Villeurbanne, France
- Hautier, Lionel ORCID Université Montpellier, France
- Pochat‐Cottilloux, Yohan ORCID Université Claude Bernard Lyon 1, Villeurbanne, France
- Raselli, Irena University of Fribourg
- Salaviale, Céline Université Claude Bernard Lyon 1, Villeurbanne, France
- Dailh, Benjamin Université Claude Bernard Lyon 1, Villeurbanne, France
- Rinder, Nicolas Université Claude Bernard Lyon 1, Villeurbanne, France
- Fernandez, Vincent ORCID The Natural History Museum, London, UK
- Adrien, Jérôme Institut National des Sciences Appliquées de Lyon, Villeurbanne, France
- Lachambre, Joël Institut National des Sciences Appliquées de Lyon, Villeurbanne, France
- Martin, Jeremy E. ORCID Université Claude Bernard Lyon 1, Villeurbanne, France
- 2023
Published in:
- Journal of Anatomy. - Hoboken, New Jersey, USA : Wiley. - 2023, vol. 242, no. 6, p. 1096-1123
Cell Biology
Developmental Biology
Molecular Biology
Ecology
Evolution
Behavior and Systematics
Histology
Anatomy
3D geometric morphometrics
Crocodylia
ontogeny
sinus
English
The phylogenetic relationships within crown Crocodylia remain contentious due to conflicts between molecular and morphological hypotheses. However, morphology based datasets are mostly constructed on external characters, overlooking internal structures. Here, we use 3D geometric morphometrics to study the shape of the intertympanic sinus system in crown crocodylians during ontogeny, in order to assess its significance in a taxonomic context. Intertympanic sinus shape was found to be highly correlated with size and modulated by cranial shape during development. Still, adult sinus morphology distinguishes specimens at the family, genus and species level. We observe a clear distinction between Alligatoridae and Longirostres, a separation of different Crocodylus species and the subfossil Malagasy genus Voay, and a distinction between the Tomistoma and Gavialis lineages. Our approach is independent of molecular methods but concurs with the molecular topologies. Therefore, sinus characters could add significantly to morphological datasets, offering an alternative viewpoint to resolve problems in crocodylian relationships.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Géosciences
- Language
-
- English
- Classification
- Palaeontology
- Related to
- License
- CC BY
- Open access status
- hybrid
- Identifiers
-
- DOI 10.1111/joa.13830
- ISSN 0021-8782
- ISSN 1469-7580
- Persistent URL
- https://folia.unifr.ch/global/documents/327566
Statistics
Document views: 17
File downloads:
- journalofanatomy-2023-perrichon-ontogeneticvariabilityoftheintertympanicsinusdistinguisheslineageswithin-2_0.pdf: 30