ammonites
Princetonella Lochman 1953 (trilobite)

Trilobita - Asaphida - Dikelocephalidae

Parent taxon: Dikelocephalidae according to P. A. Jell and J. M. Adrain 2003

Sister taxa: Briscoia, Dikelocephalus, Monocheilus, Pterocephalops, Stigmacephalus

Subtaxa: none

Ecology: fast-moving low-level epifaunal deposit feeder