Paratrinucleus Ordovician Trinucleid Trilobite from Virginia

Name: Paratrinucleus acervulosus

Class Trilobita, Trilobite Order Asaphida, Family Trinucleidae

Geologic Time: Upper Ordovician

Size: 15 mm

Fossil Site: Blacksburg, Virginia

Paratrinucleus Ordovician Trinucleid Trilobite from VirginiaDescription: Well-preserved example of a member of the Order Asaphida, Family Trinucleidae, with genal spines, a feature often not preserved intact. The cephalic pits (fenestrae) are also evident, the means by which this trilobite filtered detritus from the seafloor. The trilobite presumably hovered at the seafloor, using its legs to kick up particulates which then passed through the cephalic ring. Overall, a fine example of the taxon, rarely offered this complete.

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