Project 3919: Y. Rollot, S. W. Evers, W. G. Joyce. 2021. A redescription of the Late Jurassic (Tithonian) turtle Uluops uluops and a new phylogenetic hypothesis of Paracryptodira. Swiss Journal of Palaeontology. 140 (1):none yet.
Specimen: † Uluops uluops (UCM:53971)
View: Uluops uluops, UCM 53971, left lateral view


We study the Late Jurassic (Tithonian) turtle Uluops uluops using micro-computed tomography scans to investigate the cranial anatomy of paracryptodires, and provide new insights into the evolution of the internal carotid artery and facial nerve systems, as well as the phylogenetic relationships of this group. We demonstrate the presence of a canalis caroticus lateralis in Uluops uluops, the only pleurosternid for which a palatine artery canal can be confidently identified. Our phylogenetic analysis retrieves Uluops uluops as the earliest branching pleurosternid, Helochelydridae within Pleurosternidae, and Compsemydidae including Kallokibotion bajazidi within Baenidae, which suggests at least two independent losses of the palatine artery within paracryptodires. We expect future studies will provide additional insights into the evolution of the circulation system of paracryptodires, as well as clarifying relationships along the turtle stem.

Read the article »

Article DOI: 10.1186/s13358-021-00234-y

Project DOI: 10.7934/P3919,
This project contains
  • 38 Media
  • 2 Documents
  • 1 Taxon
  • 1 Specimen
Total size of project's media files: 1.33G

Download Project SDD File
Currently Viewing:
MorphoBank Project 3919

    Authors' Institutions

    • Université de Fribourg (University of Fribourg)


    member name taxa specimens media
    Yann Rollot
    Project Administrator
    Serjoscha Evers
    Full membership
    Walter Joyce
    Full membership

    Project has no matrices defined.

    Project views

    type number of views Individual items viewed (where applicable)
    Total project views20685
    Project overview1183
    Media views12132Media search (1726 views); M738920 (276 views); M738921 (271 views); M738922 (271 views); M738923 (265 views); M738924 (282 views); M738925 (286 views); M738926 (279 views); M738927 (286 views); M738928 (305 views); M738929 (278 views); M738930 (281 views); M738931 (274 views); M738932 (277 views); M738933 (283 views); M738934 (284 views); M738935 (262 views); M738936 (281 views); M738937 (288 views); M738938 (274 views); M738939 (270 views); M738940 (244 views); M738941 (267 views); M738943 (271 views); M738944 (276 views); M738945 (259 views); M738947 (268 views); M739132 (265 views); M739133 (274 views); M739134 (254 views); M739135 (271 views); M739136 (269 views); M739137 (270 views); M739138 (267 views); M739139 (268 views); M739140 (259 views); M739141 (264 views); M739142 (280 views); M741033 (307 views);
    Specimen list1098
    Views for media list4689
    Documents list520
    Taxon list663

    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project77
    Project downloads66
    Media downloads11M738941 (2 downloads); M741033 (1 download); M738929 (1 download); M738928 (1 download); M738934 (1 download); M738938 (1 download); M738936 (1 download); M739140 (1 download); M739141 (1 download); M739142 (1 download);