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
    Last logged in 06/14/15
    Sterling Nesbitt
    Full membership
    Last logged in 09/12/14

    Project has no matrices defined.

    Project views

    type number of views Individual items viewed (where applicable)
    Total project views29330
    Project overview3233
    Media views19907Media search (3738 views); M337273 (382 views); M346021 (390 views); M346027 (436 views); M346020 (394 views); M346735 (330 views); M346740 (377 views); M346727 (422 views); M346728 (357 views); M346737 (358 views); M346026 (367 views); M346742 (382 views); M346719 (390 views); M346741 (380 views); M339660 (373 views); M346739 (372 views); M346729 (352 views); M339659 (379 views); M346731 (387 views); M346018 (385 views); M346722 (376 views); M346017 (373 views); M346024 (372 views); M346734 (356 views); M346743 (372 views); M346025 (387 views); M346019 (363 views); M346736 (396 views); M339658 (377 views); M346726 (361 views); M346732 (354 views); M339661 (386 views); M346721 (342 views); M346016 (386 views); M339657 (419 views); M346730 (408 views); M346724 (402 views); M337274 (370 views); M346725 (370 views); M346733 (354 views); M339571 (350 views); M346720 (337 views); M346738 (398 views); M346723 (347 views);
    Documents list1456
    Taxon list1135
    Specimen list1577
    Views for media list1362

    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project226
    Project downloads220
    Media downloads1M339659 (1 download);
    Document downloads5Stenaulorhynchus preparation records (2 downloads); Supplemental Online Material (SOM) 1 (2 downloads); Supplemental Online Material (SOM) 2 (1 download);