Project 2326: K. Curry-Rogers, M. Whitney, M. D'Emic, B. Baley. 2016. Precocity in a tiny titanosaur from the Cretaceous of Madagascar. Science. 352:450-453.
Specimen: † Rapetosaurus krausei (UA - Universite d'Antananarivo:UA 9998)
View: Right Humerus 95259


Sauropod dinosaurs exhibit an ontogenetic size variation exceeding that for other vertebrates, but very young individuals are required to clarify mechanisms underlying this pattern. A new specimen of Rapetosaurus krausei sheds light on the life of one of the littlest, largest vertebrates. Bones record rapid growth rates as well as the first hatchling lines in a non-avian dinosaur, indicating that Rapetosaurus was only ~2.5 kg at hatching, and obtained a mass of ~40 kg and was ~ 35 cm tall at the hip when it died. Cortical remodeling, limb isometry, and calcified hypertrophic metaphyseal cartilages indicate an active, precocial growth strategy for this fledgling. Characteristically thin cartilage may also signal a temporary reduction in bone elongation in response to starvation within the drought-stressed Cretaceous ecosystem in which Rapetosaurus perished.

Read the article »

Article DOI: 10.1126/science.aaf1509

Project DOI: 10.7934/P2326,
This project contains
  • 31 Media
  • 1 Taxon
  • 1 Specimen
Total size of project's media files: 863 MB

Download Project SDD File
Currently Viewing:
MorphoBank Project 2326


    member name taxa specimens media media
    Kristi Curry Rogers
    Project Administrator
    Last logged in 05/17/16
    Michael D'Emic
    Full membership
    Last logged in 03/22/16

    Project has no matrices defined.

    Project views

    type number of views Individual items viewed (where applicable)
    Total project views17258
    Project overview2091
    Media views11075Media search (2145 views); M410718 (289 views); M410837 (263 views); M410832 (317 views); M410726 (291 views); M410730 (298 views); M410838 (303 views); M410729 (293 views); M410833 (278 views); M410728 (279 views); M406473 (278 views); M410834 (290 views); M410727 (299 views); M406478 (309 views); M406477 (299 views); M410735 (286 views); M410725 (279 views); M410719 (360 views); M410732 (282 views); M410731 (299 views); M406476 (254 views); M410831 (302 views); M406480 (341 views); M410835 (284 views); M410736 (264 views); M410734 (270 views); M406479 (262 views); M410733 (237 views); M410737 (302 views); M410739 (289 views); M410836 (270 views); M406475 (263 views);
    Taxon list622
    Specimen list790
    Views for media list1678
    Documents list1

    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project139
    Project downloads131
    Media downloads8M410729 (1 download); M410734 (4 downloads); M410736 (1 download); M410733 (2 downloads);