[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: K/T Extinction & Birds
>>1870's. What else do we know about birds immediately before and
>>immediately after the K/T? When did birds lose their teeth? Or were there
>>perhaps two seperate clads of birds, those with teeth and those without.? If
>>so, did any toothed birds survive the K/T?
>As far as I know (and I can't for the life of me remember where I read
>this), toothless birds had evolved before the end of the Cretaceous, but all
>known bird fossils from the early Tertiary have teeth. It looks as though
>this is a trait which evolved more than once.
Actually, there are NO known toothed birds in the Mesozoic.
Thomas R. Holtz, Jr. Phone: 703-648-5280
Vertebrate Paleontologist Fax: 703-648-5420
email@example.com ------------> firstname.lastname@example.org
U.S. Geological Survey -------------> University of Maryland
Branch of Paleontology & Stratigraphy ----> Department of Geology
MS 970 National Center
Reston, VA 22092 -------------> College Park, MD 20742