Cephalopoda - Tarphycerida - Estonioceratidae

Full reference: A. K. Miller and B. Kummel. 1945. A New Genus of Early Paleozoic Cephalopods from Alaska. Journal of Paleontology 19(2):126 -128

Parent taxon: Estonioceratidae according to R. E. Crick 1981

See also Sepkoski 2002 and Teichert et al. 1964

Sister taxa: Aethoceras, Aphetoceras, Clytoceras, Deltoceras, Eichwaldoceras, Estonioceras, Pycnoceras, Shumardoceras, Tragoceras

Subtaxa: Alaskoceras sewardense

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Type: Plectoceras sewardense

Ecology: fast-moving nektobenthic carnivore

Distribution: found only at On crest of ridge between Cassiterite Creek and Lost River, about 5000’ N.12W. o (Ordovician of Alaska)

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Specimen images are retrieved through the ePANDDA API.