ammonites
Fritzaspis generalis Hollingsworth 2007 (trilobite)

Trilobita

Full reference: J. S. Hollingsworth. 2007. Fallotaspidoid trilobite assemblage (Lower Cambrian ) from the Esmeralda Basin (western Nevada, USA): The oldest trilobites from Laurentia. Memoirs of the Association of Australasian Palaeontologists 33:123-140

Belongs to Fritzaspis according to J. S. Hollingsworth 2007

Sister taxon: Fritzaspis ovalis

Type specimen: USNM 534325

Ecology: fast-moving low-level epifaunal carnivore