Titre du projet
Accessing the inner ear of historical fossil Perissodactyla skulls
Descriptif du projet
The Rhinocerotoidea (Mammalia, Perissodactyla) have appeared in North America or Asia during the Early Eocene and were at some point one of the predominant lineage of large herbivorous mammals, especially in Europe. Six families have been recognized, but their relationships are still poorly resolved. Although some European Rhinocerotidae have been revised during my PhD thesis, their relationships with other Rhinocerotoid families remain unresolved. The objective of this project will be to investigate new characters from the petrosal bone never studied in a phylogenetic context on perissodactyls. This bone found in all mammals’ skulls protects the inner ear, and bears numerous morphological characters, that can be used to infer phylogenetic relationships. However, this bone, and particularly its inner anatomy, can only be investigated (without destruction) through tomography. In addition, the cranial and dental morphology of those specimens will also be coded in a morphological data matrix, as well as their postcranial anatomy. The resulting phylogenies from both datasets (from the petrosal and from classical characters) will be compared to the results of the analysis comprising both sets, to assess the impact of the petrosal bone. The study of holotype will permit to better resolve the phylogeny of the Rhinocerotoidea.

Travaux réalisés par la plateforme AST-RX

Collection No Inventaire Descriptif Vignette Equipement
F AR2262 v|tome|x L 240-180
F AR4155 v|tome|x L 240-180
F AR4157 v|tome|x L 240-180
F GY350 ROI : pétreux (spécimen trop dense, scans pas très beau) v|tome|x L 240-180
F GY424 crane en entier (aussi étude pétreux) v|tome|x L 240-180
F Gy523 ROI : pétreux v|tome|x L 240-180
F LIM181 ROI : pétreux (scan pas très beau, spécimens très dense et large) v|tome|x L 240-180
F LIM181 crane en entier (spécimen très dense et large) v|tome|x L 240-180
F LIM778 Pas de contraste, données pas exploitables de la ROI des pétreux v|tome|x L 240-180
F SA10172B ROI: pétreux (scan pas informatif, pas de contraste) v|tome|x L 240-180
F SA15670 ROI : pétreux v|tome|x L 240-180
F SEL583 v|tome|x L 240-180
F SEL585 v|tome|x L 240-180
F SEL586 v|tome|x L 240-180
F SEL589 v|tome|x L 240-180
F SEL590 v|tome|x L 240-180
F SEL594 v|tome|x L 240-180
F SEL595 v|tome|x L 240-180
F SEL597 v|tome|x L 240-180
F SML223 ROI : pétreux (scan pas très beaux, à la limite du roi) v|tome|x L 240-180
F Sel584 v|tome|x L 240-180