Trilobita - Phacopida - Encrinuridae
Alternative combinations: Encrinuroides torulatus, Frencrinuroides torulatus
Full reference: W. R. Evitt and R. P. Tripp. 1977. Silicified Middle Ordovician trilobites from the families Encrinuridae and Staurocephalidae. Palaeontographica Abteilung A 157:109-174
Belongs to Physemataspis according to D. K. Moss and S. R. Westrop 2014
See also Edgecombe and Chatterton 1990, Edgecombe et al. 1998 and Evitt and Tripp 1977
Sister taxa: Physemataspis (Physemataspis), Physemataspis (Prophysemataspis), Physemataspis coopi, Physemataspis insularis, Physemataspis mirabilis, Physemataspis tholus
Type specimen: USNM 217490, a cephalon/head (cranidium)
Ecology: fast-moving low-level epifaunal carnivore
Distribution: found only at Loc. 1a. Tumbling Run, 2 miles southwest of Strasburg (Ordovician of Virginia)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.