Rare Lachnostoma Trilobite

Lachnostoma latucelsum

Trilobite Order Asaphida, Family Asaphidae

Geologic Time: Middle Ordovician

Size: (25.4mm=1 inch): 17 mm long by 11 mm wide on a 60 mm by 50 mm matrix

Fossil Site: Ninemile Shale, Eureka County, Nevada

Fossil Code: UB276

Price: $295.00

Lachnostoma latucelsumDescription: An example of a member of the Order Asaphida, Family Asaphidae, this one is Lachnostoma latucelsum. The Asaphidae are known for effacement, or loss of detail, to the exoskeleton, a trait readily seen here. The flattened leading edge of the cephalon and trailing edge of the pygidium may have been a means by which the trilobite kept itself at the surface of a silty seafloor.

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