Large Nankinolithus Ordovician Trilobite

Description: Well-preserved example of a member of the Order Asaphida, Family Trinucleidae, this is Nankinolithus. 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 with this degree of preservation, which is quite 3-D in aspect from specimens from the region. See my other offerings for another Nankinolithus in association with a Cyclopyge.