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Erratencrinurus spicatus Tripp 1974 (trilobite)

Trilobita - Phacopida - Encrinuridae

PaleoDB taxon number: 309412

Alternative combination: Encrinuroides spicatus

Full reference: R. P. Tripp. 1974. New encrinurid trilobites from the Galena Formation (Ordovician) of Wisconsin and Iowa. Journal of Paleontology 48(3):485-488

Belongs to Erratencrinurus according to D. K. Moss and S. R. Westrop 2014

Sister taxa: Erratencrinurus (Celtencrinurus), Erratencrinurus (Erratencrinurus), Erratencrinurus capricornu, Erratencrinurus lapworthi, Erratencrinurus neuter, Erratencrinurus trippi, Erratencrinurus uncatus, Erratencrinurus vigilans

Type specimen: USNM 164151, a cephalon/head (cranidium)

Ecology: fast-moving low-level epifaunal carnivore