KEROKUK COUNTY
QUARRY ON LAND OWNED BY MR. JASPER HIEMSTRA
FILLS WITHIN TWO ADJACENT COLLAPSE STRUCTURES FORMED IN THE WAUGH AND VERDI MEMBERS OF THE IOWA ‘ST LOUIS” LIMESTONE.
LOWER CHESTERIAN
ASBIAN STAGE
LOWER UPPER VISEAN EPOCH
MIDDLE MISSISSIPPIAN
LOWER CARBONIFEROUS
STEM: TETRAPODA GOODRICH, 1930
Incertae sedis
*Sigournea multidentata
Family: WHATCHEERIIDAE Clark, 2002
*Whatcheeria deltae
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
Incertea sedis
Family: COLOSTEIDAE Cope, 1875
*Deltaherpeton hiemstrae