Project 1245: S. Werning, S. J. Nesbitt. 2015. Bone histology and growth in Stenaulorhynchus stockleyi (Archosauromorpha: Rhynchosauria) from the Middle Triassic of the Ruhuhu Basin of Tanzania. Comptes Rendus Palevol.
Specimen: † Stenaulorhynchus stockleyi (NHMUK/PV:R36618)
View: femur - mid-diaphyseal cross section


The bone histology of non-archosauriform archosauromorphs is poorly known relative to archosauriforms, especially ornithodiran (bird-line) archosaurs. Here we describe the femoral and tibial histology of a single individual of Stenaulorhynchus stockleyi, a Middle Triassic rhynchosaur from Tanzania. Both elements are composed largely of moderately vascularized parallel-fibered bone tissue, which becomes avascular and more lamellar approaching the periosteum. The spacing between growth marks in S. stockleyi strongly attenuates with age, suggesting determine growth for this taxon. Whereas the bone tissue suggests slower growth compared to South American rhynchosaurs, which have fibro-lamellar bone tissue and exhibit more anastomoses between canals, the determinate growth pattern seems to be shared among hyperodapedontid rhynchosaurs. Although non-archosauriform archosauromorphs vary in the rate of bone deposition and growth in their first year, all taxa examined to date grew relatively slowly compared to most archosauriforms, especially ornithodiran archosaurs.

Read the article »

Article DOI: 10.1016/j.crpv.2015.03.004

Project DOI: 10.7934/P1245,
This project contains
  • 43 Media
  • 3 Documents
  • 1 Taxon
  • 1 Specimen
Total size of project's media files: 417.66M

Download Project SDD File
Currently Viewing:
MorphoBank Project 1245

    This research
    supported by

    Authors' Institutions

    • Virginia Tech (Virginia Polytechnic Institute and State University)

    • Stony Brook University


    member name taxa specimens media media
    Sarah Werning
    Project Administrator
    Sterling Nesbitt
    Full membership

    Project has no matrices defined.

    Project views

    type number of views Individual items viewed (where applicable)
    Total project views35540
    Project overview3630
    Media views24425Media search (4470 views); M337273 (477 views); M346021 (480 views); M346027 (535 views); M346020 (489 views); M346735 (415 views); M346740 (458 views); M346727 (514 views); M346728 (445 views); M346737 (439 views); M346026 (458 views); M346742 (463 views); M346719 (482 views); M346741 (460 views); M339660 (461 views); M346739 (458 views); M346729 (437 views); M339659 (463 views); M346731 (479 views); M346018 (480 views); M346722 (469 views); M346017 (465 views); M346024 (458 views); M346734 (441 views); M346743 (451 views); M346025 (470 views); M346019 (447 views); M346736 (481 views); M339658 (466 views); M346726 (452 views); M346732 (441 views); M339661 (471 views); M346721 (440 views); M346016 (476 views); M339657 (510 views); M346730 (495 views); M346724 (489 views); M337274 (461 views); M346725 (458 views); M346733 (443 views); M339571 (432 views); M346720 (426 views); M346738 (482 views); M346723 (438 views);
    Documents list1638
    Taxon list1403
    Specimen list1921
    Views for media list1721

    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project282
    Project downloads273
    Media downloads4M339659 (1 download); M337273 (2 downloads); M337274 (1 download);
    Document downloads5Stenaulorhynchus preparation records (2 downloads); Supplemental Online Material (SOM) 1 (2 downloads); Supplemental Online Material (SOM) 2 (1 download);