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Re: query about K-T extinction
>I guess what I'm getting at is this:
>The argument I seem to always see is that the dinos dies out because
>they were the biggest animals, and I can accept that in the case of
>large sauropods and large meat-eaters like T-Rex. But weren't there
>little (like dog-sized) dinos around at the time? And if so, how can
>you explain how they didn't survive if bigger non-dino land species
>did, based on the theory above?
>Sorry to ramble. I just keep having this problem with _all_ dinos dying
>out because of this when other families limped at least partially through.
>Were there any non-dino animals where _no_ species lived trough the K/T?
>I'm thinking land animals, as I'm sure there are some of these in the ocean.
>Just wondering out loud again...
Enantiornithine birds (globally distributed), some North American marsupial
clades, and the last few (one?) species of pterosaurs died out at the K-T.
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