SEMLY DISTRICT
KOST'ALOV
KOST'ALOV-KALNA HORIZON
UPPER LIBSTAT FORMATION
UPPER AUTUNIAN
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887
MICROORDER: EUSKELIA YATES & WARREN, 2000
ORDER: EYROPODIA
Superfamily: ERYOPOIDEA Cope, 1882 (sensu Save-Soderbrergh, 1935)
Family: ERYOPIDAE Cope 1882
Non Ptyonius bendai