Trilobita - Phacopida - Pterygometopidae

Full reference: R. Ludvigsen and B. D. E. Chatterton. 1982. Ordovician Pterygometopidae (Trilobita) of North America. Canadian Journal of Earth Sciences 19:2179-2206

Parent taxon: Eomonorachinae according to R. Ludvigsen and B. D. E. Chatterton 1982

See also Sepkoski 2002

Sister taxa: Calyptaulax, Eomonorachus, Liocnemis, Podowrinella, Sceptaspis, Tricopelta

Subtaxa: Denella cumera Denella goodridgii

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Type: Denella cumera

Ecology: fast-moving low-level epifaunal carnivore

Distribution: found only at District of Mackenzie Ceraurus mackenziensis zone (Ordovician of Northwest Territories)

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Specimen images are retrieved through the ePANDDA API.