Phenacocoelus typus Peterson 1907 Phenacocoelus is an extinct genus of Artiodactyl of the family Merycoidodontidae, endemic to North America.

They lived during the Early Miocene 24.8—20.4 mya, existing for approximately 4 million years.

[1][2][3] Fossils have been uncovered in eastern Wyoming and western Nebraska.

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