Lawrence M. Witmer, PhD
Professor of Anatomy
Chang Professor of Paleontology

Dept. of Biomedical Sciences
Heritage College of Osteopathic Medicine
Life Science Building, Rm 123
Ohio University
Athens, Ohio 45701 USA

Email: witmerL@ohio.edu

Dinosauria
Saurischia			Ornithischia
Sauropodomorpha			Thyreophora
	cf. Apatosaurus excelsus		• Stegosauria
+	Diplodocus longus		+	Stegosaurus
+	Camarasaurus		• Ankylosauria
				Pawpawsaurus campbelli
				Panoplosaurus mirus
			+	Gastonia burgei
Theropoda			+	Pinacosaurus grangeri
	Herrerasaurus ischigualastensis			Saichania chulsanensis
	Eoraptor lunensis			Tarchia kielanae
	Coelophysis bauri			Ankylosaurus magniventris
	Ceratosaurus magnicornis
	Majungasaurus crenatissimus
	Gallimimus bullatus
	Marshosaurus/Stokesosaurus		Cerapoda
+	Gorgosaurus libratus		• Ornithopoda
	Nanotyrannus lancensis			Altirhinus kurzanovii
+	Tyrannosaurus rex
	Tarbosaurus bataar			Maiasaura peeblesorum
				Saurolophus angustirostris
			+	Edmontosaurus
	Falcarius utahensis			Equijubus normani
	Avimimus portentosus		• Pachycephalosauria
	Oviraptor philoceratops			Stegoceras validum
+	Conchoraptor gracilis			Prenocephale prenes
	Ingenia yanshini		• Ceratopsia
	Dromaeosaurus albertensis			Liaoceratops yanzigouensis
+	Deinonychus antirrhopus			Archaeoceratops oshimai
+	Velociraptor mongoliensis			Auroraceratops rugosi
+	Bambiraptor feinbergorum			Leptoceratops gracilis  \
	Troodon formosus			Bagaceratops rozhdestvenskyi\
+	Archaeopteryx		+	Protoceratops andrewsi
	Diatryma gigantea			Zuniceratops christopheri
	Raphus cucullatus			Triceratops horridus
Other Archosaurs
	Stagonolepididae			Pterosaurs
	Desmatosuchus haplocerus			Rhamphorhynchus muensteri
				Pterodactylus antiquus
				Anhanguera sp.
Mammals
+	Smilodon			Hyaenodon horridus
	Eusmilus sicarius			Archaeotherium mostoni
	Thylacosmilus atrox

Note: The casts depicted on these pages are for scientific research only and are not for sale.

Research in the Witmer lab does not involve experimentation on live animals.  Specimens of modern animals used in research are salvage specimens, obtained legally from commercial or governmental sources.