FREMONT COUNTY
BULL LAKE CREEK
POPO AGIE FORMATION
OTISCHALKIAN
LATE CARNIAN STAGE
LOWER LATE TRIASSIC EPOCH
LATE TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887
MICROORDER: LIMNARCHIA YATES & WARREN, 2000
ORDER: TREMATOSAURIA PIVETEAU, 1955
Superfamily: METOPOSAUROIDEA Watson, 1919
Family: METOPOSAURIDAE Watson, 1919
Subfamily: METOPOSAURINAE Watson, 1919
Koskinonodon perfectus
= Buettneria perfecta
= *Koskinodon princeps
= Borborophagus sp
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TEXAS
FREMONT COUNTY
30 M NW OF LANDER
POPO AGIE FORMATION
OTISCHALKIAN
LATE CARNIAN STAGE
LOWER LATE TRIASSIC EPOCH
LATE TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887
MICROORDER: LIMNARCHIA YATES & WARREN, 2000
ORDER: TREMATOSAURIA PIVETEAU, 1955
Superfamily: METOPOSAUROIDEA Watson, 1919
Family: METOPOSAURIDAE Watson, 1919
Subfamily: METOPOSAURINAE Watson, 1919
Koskinonodon perfectus
= Buettneria perfecta
= *Borborophagus wyomingensis
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