クロイツ群が初めて発見されたのはいつ
and lived in Chaco Canyon near the site of the Anasajisaurus fossil discovery. The species was first named in 1992 by leading paleontologist Jack Horner. The holotype skull (and the only specimen) was collected during fieldwork at Brigham Young University in San Juan County, New Mexico in the 1970s and archived on campus as BYU12950. Horner is the first
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