†Porosteognathus efremovi Vjuschkov 1952 (therapsid)
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Osteichthyes - Therocephalia - Lycosuchidae
Belongs to Porosteognathus according to M. F. Ivakhnenko 2011
See also Battail and Surkov 2000 and Tatarinov 2008
Sister taxa: none
Type specimen: PIN 157/19, a partial skull (Parietals). Its type locality is Kamenny Ravine (Ulema River), Isheevo, PIN 157, 2207, which is in an Urzhumian/Severodvinian fluvial sandstone/mudstone in the Russian Federation.
Ecology: carnivore
Distribution: found only at Kamenny Ravine (Ulema River), Isheevo, PIN 157, 2207
Specimen images are retrieved through the ePANDDA API.
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