RE: 190 million year old mammal footprints found

["Thomas R. Holtz, Jr." <tholtz@umd.edu>]

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of Dora Smith
>
> Discovery Channel Life Before the Dinosaurs.  Available at 
> You Tube.  End 
> part 6, and part 7.   Phonetically spelled;
> di-eek'-to-don.
> 
> 1 1/2 feet long, pairs off in spiral burrows.  A reptile, but 
> hears through bones in its jaw that will one day evolve into 
> middle ear bones.
> 

Diictodon, a dicynodon. Not a reptile in the cladistic sense.

Thomas R. Holtz, Jr.
Email: tholtz@umd.edu   Phone: 301-405-4084
Office: Centreville 1216                        
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
http://www.geol.umd.edu/~tholtz/
Fax: 301-314-9661               

Faculty Director, Earth, Life & Time Program, College Park Scholars
http://www.geol.umd.edu/~jmerck/eltsite/
Faculty Director, Science & Global Change Program, College Park Scholars
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        University of Maryland
                        College Park, MD 20742 USA