Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

Sexual Dimorphism of Pteranodon and Other Pterosaurs, with Comments on Cranial Crests

S. Christopher Bennett
Journal of Vertebrate Paleontology
Vol. 12, No. 4 (Dec. 15, 1992), pp. 422-434
Stable URL: http://www.jstor.org/stable/4523470
Page Count: 13
  • Subscribe ($19.50)
  • Cite this Item
Sexual Dimorphism of Pteranodon and Other Pterosaurs, with Comments on Cranial Crests
Preview not available

Abstract

Metric data from the large collection of the Late Cretaceous pterosaur Pteranodon are bimodally distributed with a more numerous small size-class and a less numerous large size-class. The size-classes differ in cranial crest and pelvic structure. The small size-class has small cranial crests and deep puboischiadic plates that produce a large pelvic canal, while the large size-class has large cranial crests and shallow puboischiadic plates that produce a small pelvic canal. The difference in pelvic structure suggests that the small size-class is female. The various functions proposed for cranial crests are reviewed, and it is concluded that none can account for the difference in crest size. The conclusion is that the large crests of males are display structures.

Page Thumbnails

  • Thumbnail: Page 
422
    422
  • Thumbnail: Page 
423
    423
  • Thumbnail: Page 
424
    424
  • Thumbnail: Page 
425
    425
  • Thumbnail: Page 
426
    426
  • Thumbnail: Page 
427
    427
  • Thumbnail: Page 
428
    428
  • Thumbnail: Page 
429
    429
  • Thumbnail: Page 
430
    430
  • Thumbnail: Page 
431
    431
  • Thumbnail: Page 
432
    432
  • Thumbnail: Page 
433
    433
  • Thumbnail: Page 
434
    434