ammonites
Strigigenalis caudata Billings 1865 (trilobite)

Trilobita - Proetida - Bathyuridae

Alternative combination: Bathyurus caudatus

Belongs to Strigigenalis according to R. A. Fortey 1979

Sister taxa: Strigigenalis brevicaudata, Strigigenalis crassimarginata, Strigigenalis derbyi, Strigigenalis implexa, Strigigenalis insentis, Strigigenalis knighti, Strigigenalis stevensi

Type specimen: GSC 635, a pygidium

Ecology: fast-moving low-level epifaunal deposit feeder