EAST AFRICA
TANZANIA
TANGANYIKA
RUHUHU VALLEY
DICYNODON ASSEMBLAGE ZONE (FORMERLY DICYNODON LACERTICEPS-WHAITSIA ZONE OF KEYSER, 1979, SACS, 1980, DAPTOCEPHALUS ZONE OF KITCHING, 1870, 1977, UPPER CISTECEPHALUS ZONE OF WATSON, 1914).
TATARIAN AGE
LOPINGIAN SUBEPOCH
ZECHSTEIN EPOCH
LATE PERMIAN
STEM: TETRAPODA GOODRICH, 1930
_____________________________________________________________________________________SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: SYNAPSIDA OSBORN, 1903
SUPERORDER: THERASPIDA BROOM, 1905
GRANDORDER: EUTHERAPSIDA
MICRORDER: NEOTHERAPSIDA
ORDER: THERIODONTIA OWEN, 1881
SUBORDER: GORGONOPIA SEELEY, 1895
Incertae sedis
Arctognathus sp
EAST AFRICA
TANZANIA
TANGANYIKA
RUHUHU
LOCALITY B 32
DICYNODON ASSEMBLAGE ZONE (FORMERLY DICYNODON LACERTICEPS-WHAITSIA ZONE OF KEYSER, 1979, SACS, 1980, DAPTOCEPHALUS ZONE OF KITCHING, 1870, 1977, UPPER CISTECEPHALUS ZONE OF WATSON, 1914).
TATARIAN AGE
LOPINGIAN SUBEPOCH
ZECHSTEIN EPOCH
LATE PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: SYNAPSIDA OSBORN, 1903
SUPERORDER: THERASPIDA BROOM, 1905
GRANDORDER: EUTHERAPSIDA
MICRORDER: NEOTHERAPSIDA
ORDER: THERIODONTIA OWEN, 1881
SUBORDER: GORGONOPIA SEELEY, 1895
Incertae sedis
Gen. sp indet.
_____________________________________________________________________________________