Parallelodon sp. (side view)
Parallelodon sp. (bottom view)
A bivalve that survived from the early Ordovician
to the Late Jurassic, Parallelodon had a world wide
distribution. Its shell shows concentric growth
lines and usually had radial ribs. Its name means
"parallel teeth" and refers to the long side at the
end of the hinge. The teeth are not for feeding, but
are used to hold the two valves together.
General abundance: Common
Fossils of Ohio, Bulletin 70,
Ohio Division of Geological Survey, 1996.
Pages 140 & 148-149 (fig. 19)
chitons cephalopods clams gastropods rostroconchs