NEAR DELTA
UPPER ST. LOUIS FORMATION
EARLY CARBIONFEROUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
Incertae sedis
Family: COLOSTEIDAE Cope, 1875
Genus nova
NEOTETRAPODA
SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934
ORDER: ANTHRACOSAURIA WATSON, 1917
Incertae sedis
Proto-anthracosauria nova
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IOWA
SINKHOLE
MISSISSIPPIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
Incertea sedis
Family: COLOSTEIDAE Cope, 1875
Genus nova
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