Whitardolithus Ordovician Trinucleid Trilobites

Description: Well-preserved example of a member of the Order Asaphida, Family Trinucleidae, with a dramatically-displayed genal spines. 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. This is a fine pair of trilobites, one of which is complete. The thorax on the other is either missing or curled up beneath the large cephalon.