Philip R. Bjork

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Career

Bjork received his undergraduate degree at the University of Michigan.^[1] Bjork's Master's thesis was on the vertebrate fossils of the Slim Buttes.^[2] He was a professor at the South Dakota School of Mines and Technology^[1] in Rapid City, South Dakota, as well as serving as director of their Museum of Geology^[3] from 1975 to 2000.^[2] His academic focus was on Cretaceous dinosaurs and mammals from the Cretaceous and early Cenozoic.

1975: Bjork described a fossil of Proscalops tertius, an extinct insectivoran, that he had found in Oligocene deposits in the Badlands National Park.^[4]
1985: He announced the find of remains of at least ten duck-billed dinosaurs in western South Dakota.^[5]
1989: Bjork reported the discovery of Dakotadon, originally believed to be the first remains of Iguanodon found in North America, in the Lakota Formation of South Dakota;^[6] the remains included the skull, partial mandible, and incomplete caudal and dorsal vertebrae.^[7]^[8]

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