Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

Journal Article

Split Carinae on Tyrannosaurid Teeth and Implications of Their Development

Gregory M. Erickson
Journal of Vertebrate Paleontology
Vol. 15, No. 2 (Jun. 13, 1995), pp. 268-274
Stable URL: http://www.jstor.org/stable/4523630
Page Count: 7

You can always find the topics here!

Topics: Phenotypic traits, Leaf blade, Teeth, Taxa, Dentition, Animal teeth, Secondary traits, Genetics, Dinosaurs, Rivers
Were these topics helpful?
See something inaccurate? Let us know!

Select the topics that are inaccurate.

Cancel
  • Subscribe ($19.50)
  • Add to My Lists
  • Cite this Item
Split Carinae on Tyrannosaurid Teeth and Implications of Their Development
Preview not available

Abstract

Examination of hundreds of shed and intact tyrannosaurid teeth from several taxa and formations revealed that the presence of split carinae is widespread. Approximately 11% of the surveyed teeth showed some degree of expression of this trait. Split carinae were found in Tyrannosaurus rex, Daspletosaurus sp., Albertosaurus sp., and Alectrosaurus olsoni. The trait is also found in non-tyrannosaurids (e.g., Allosaurus fragilis). Trauma, aberrant tooth replacement, or genetic factors may have led to the development of split carinae, although the latter finds the most support. If the split carinae are caused by genetic factors, they may prove valuable in assessing the dispersion patterns and evolution of the tyrannosaurids.

Page Thumbnails

  • Thumbnail: Page 
268
    268
  • Thumbnail: Page 
269
    269
  • Thumbnail: Page 
270
    270
  • Thumbnail: Page 
271
    271
  • Thumbnail: Page 
272
    272
  • Thumbnail: Page 
273
    273
  • Thumbnail: Page 
274
    274