Trilobita - Corynexochida - Oryctocephalidae

Full reference: F. A. Sundberg. 1994. Corynexochida and Ptychopariida (Trilobita, Arthropoda) of the Ehmaniella biozone (Middle Cambrian), Utah and Nevada. Contributions in Science 446:1-137

Parent taxon: Oryctocephalidae according to P. A. Jell and J. M. Adrain 2002

See also Sepkoski 2002 and Sundberg 1994

Sister taxa: Arthricocephalus, Balangia, Barklyella, Changaspis, Cheiruroides, Cheiruroididae, Curvoryctocephalus, Duyunaspis, Euarthricocephalus, Feilongshania, Hunanocephalus, Kunshanaspis, Lancastria, Metabalangia, Metarthricocephalus, Oryctocara, Oryctocare, Oryctocarinae, Oryctocephalina, Oryctocephalinae, Oryctocephaloides, Oryctocephalops, Paleooryctocephalus, Protoryctocephalus, Sandoveria, Shabaella, Shergoldiella, Thoracocare, Tonkinellinae

Subtaxa: Opsiosoryctocephalus ophis

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Type: Opsiosoryctocephalus ophis

Ecology: nektobenthic carnivore

Distribution: found only at Snake Range, LACMIP 15563 ( of Nevada)

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