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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