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RE: Asilisaurus kongwe
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> On Behalf Of Augusto Haro
> If the Silesauridae is the sister group of the Dinosauria,
> then its presence in the Anisian indicates an older age for
> the Dinosauria (I mean, as old as the Silesauridae).
Not as such, given that Dinosauria proper is a node-based group. It does
mean that there are members of the (unnamed) clade of Dinosauria and all
taxa closer to it than to Silesaurus were present, though.
> for pterosaurs, and the stem-taxa leading to Scleromochlus,
> Lagerpeton and Marasuchus but not dinosaurs.
> Regarding the "bird-line", I think this corresponds to the
> Avemetatarsalia (erected by Benton, 1999, in the
> Scleromochlus paper in Philosophical Transactions).
> Avemetatarsalia are all those living beings more closely
> related to birds than to crocodiles.
Thomas R. Holtz, Jr.
Email: email@example.com Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Earth, Life & Time Program, College Park Scholars
Faculty Director, Science & Global Change Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA