On the Occlusal Fit of Tribosphenic Molars: Are We Underestimating Species Diversity in the Mesozoic?
Fuente:
Zenodo
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Recurso digital |
| Publicado: |
Zenodo
2005
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866902013737959424 |
|---|---|
| author | Polly, P. David Le Comber, Steven C. Burland, Tamsin M. |
| author_facet | Polly, P. David Le Comber, Steven C. Burland, Tamsin M. |
| contents | (Uploaded by Plazi for the Bat Literature Project) The complex occlusal fits between tribosphenic teeth are a rich source of information for taxonomic, phylogenetic, and evolutionary analysis. The degree of fit between upper and lower cheek teeth has been used to refer specimens to species-level taxa, but statistical data on occlusal fit in relation to taxonomic identity have been lacking. We used landmarks on upper and lower first molars of 20 bat populations representing 16 species to assess the degree of occlusal fit (1) between teeth from the same individual; (2) between teeth from different individuals belonging to the same populations; and (3) between teeth belonging to different populations. We found that the fit of teeth belonging to different populations was significantly worse than between those of the same population and that the degree of misfit increased linearly with time since common ancestry, albeit with substantial variance. We used our comparisons to assess the species-level diversity within Batodon, the smallest known placental mammal from the Cretaceous. Our data suggest, with caveats, that instead of belonging to a single species, the specimens assigned to Batodon represent at least two species as different as those belonging to different genera or families of living bats. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_13424643 |
| institution | Zenodo |
| language | |
| publishDate | 2005 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | On the Occlusal Fit of Tribosphenic Molars: Are We Underestimating Species Diversity in the Mesozoic? Polly, P. David Le Comber, Steven C. Burland, Tamsin M. Biodiversity Mammalia Chiroptera Chordata Animalia bats bat (Uploaded by Plazi for the Bat Literature Project) The complex occlusal fits between tribosphenic teeth are a rich source of information for taxonomic, phylogenetic, and evolutionary analysis. The degree of fit between upper and lower cheek teeth has been used to refer specimens to species-level taxa, but statistical data on occlusal fit in relation to taxonomic identity have been lacking. We used landmarks on upper and lower first molars of 20 bat populations representing 16 species to assess the degree of occlusal fit (1) between teeth from the same individual; (2) between teeth from different individuals belonging to the same populations; and (3) between teeth belonging to different populations. We found that the fit of teeth belonging to different populations was significantly worse than between those of the same population and that the degree of misfit increased linearly with time since common ancestry, albeit with substantial variance. We used our comparisons to assess the species-level diversity within Batodon, the smallest known placental mammal from the Cretaceous. Our data suggest, with caveats, that instead of belonging to a single species, the specimens assigned to Batodon represent at least two species as different as those belonging to different genera or families of living bats. |
| title | On the Occlusal Fit of Tribosphenic Molars: Are We Underestimating Species Diversity in the Mesozoic? |
| topic | Biodiversity Mammalia Chiroptera Chordata Animalia bats bat |
| url | https://doi.org/10.5281/zenodo.13424643 |