Annatherapsidus is an extinct genus of therocephalians from the Upper Permian of Russia.[1][2] It was a fairly small animal with a length of 91 cm and a 22 cm skull.[3] It was originally named Anna petri, but the genus name was already taken, so it was renamed to Annatherapsidus.[4]
^Amalitzky, V.P. (1922). "Diagnoses of the new forms of vertebrates and plants from the Upper Permian of North Dvina". Izv. Ross. Akad. Nauk. 25 (1): 1–12.
^Ivakhnenko, M.F. (2011). "Permian and Triassic Therocephals (Eutherapsida) of Eastern Europe". Paleontological Journal. 45 (9): 981–1144.
^Amalitzky, V.P. (1927). "The Northern Dvina therocephal Anna petro gen. et. sp. nov". Dvinskie raskopki prof. V.P. Amalitskogo (Northern Dvina Excavations of Prof. V.P. Amalitzky). 5.
^Kuhn, O. (1961). Die Familien der recenten und fossilien Amphibien und Reptilien (in German). Bamberg: Verlag.
