dinosauria (saurischia model) - geologytholtz/g104/handouts/104... · 2018-08-06 · dinosauria...
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Silesauridae
Sauropodomorpha Theropoda
SAURISCHIA
DINOSAURIA
Ornithischia
Neornithischia
Elongate Deltopectoral Crest on Humerus; Semioppos-able Manual Digit I; Reduced Manual Digits IV & V; Open (perforate) Acetabulum; Potential for fuzzy integument?
DINOSAURIA (Saurischia model)
Marginocephalia Ornithopoda
Thyreophora
Skeletons by Scott Hartman (skeletaldrawing.com)
Dracohors
Special Articulations (hypo-sphene-hypantrum) in dorsal verte-brae; Elongated Neck; Hollow air sac chambers in cervicals; Meta-carpal I reduced; Enlarged thumb claw; Manual Digit II longest in the manus
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