†subfamily Thoosuchinae Getmanov 1989 (tetrapod)
Amphibia - Temnospondyli - Trematosauridae
Parent taxon: Trematosauridae according to Ivakhnenko 1997
Sister taxa: Benthosphenus, Bukobaja, Hyperokynodon, Lonchorhynchinae, Lyrocephalinae, Lyrocephalus, Prothoosuchus, Tertreminae, Tertremoides, Trematolestes, Trematosaurinae, Trematosaurus, Trematosaurus kannemeyeri, Trematotegmen
Subtaxa: none
Ecology: amphibious carnivore
Distribution: found only at Kolguev Island, borehole 9 (Triassic of Russian Federation)