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Eurypterus lacustris
ROCK UNIT - Williamsville Dolostone
AGE - Upper Silurian (410 million years old)
LOCALITY - Buffalo, Erie Co., New York
CLASS - Merostomata
ORDER - Eurypterida
FAMILY - Eurypteridae
GENUS/SPECIES - Eurypterus lacustris
Eurypterus lacustris is a distinctive eurypterid which only occurs in the uppermost beds of the Bertie Group (Williamsville Formation) and is only commonly recognized in the Buffalo area and adjoining areas in southern Ontario.
PRI 42414