ENGLAND
DURHAM COUNTY
USWORTH COLLIERY
TOP BUSTY SEAM
LOWER COAL MEASURES
UPPER COMMUNIS ZONE
WESTPHALIAN A
MIDDLE SILESIAN SERIES
UPPER BASHKIRIAN – LOWER MOSCOVIAN EPOCH
MIDDLE CARBONIFEROUS (MIDDLE PENNSYLVANIAN).
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
NEOTETRAPODA
SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934
ORDER: ANTHRACOSAURIA WATSON, 1917
SUBORDER: ANTHRACOSAURIA SAVE-SODERBRGH, 1934
Family: ANTHRACOSAURIDAE Cope, 1875
Anthracosaurus russelli
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