BRAZIL

AMAZONAS STATE

MUNICIPAL GENERAL CAMARA

PORTO ALEGRE-SANTA MARIA

SANTA MARIA FORMATION

?LADIANIAN STAGE

UPPER MID TRIASSIC EPOCH OR ?EARLY CARNIAN STAGE

LOWER LATE TRIASSIC EPOCH

LATE TRIASSIC

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

EUTHERIODONTIA

SUBORDER: CYNODONTIA OWEN, 1860

EPICYNODONTIA HOPSON & KITCHING, 2001

INFRAORDER: EUCYNODONTIA

Superfamily: TRITYLODONTIA Cope, 1884 (sensu Kuhne, 1943)

Family: TRAVERSODONTIDAE Huene, 1936

*Massetognathus ochagaviae

____________________________________________________________________________________