New York City | Mexico City | Colorado | Kansas City, Missouri | Kansas City | Salt Lake City | Quebec City | Oklahoma City | Colorado Springs, Colorado | City of London | Colorado River | city | Vatican City | New York City Subway | Panama City | Kansas City Chiefs | Kansas City Royals | Sex and the City | Mayor of New York City | Atlantic City, New Jersey | Utrecht (city) | University of Colorado | Cork (city) | New York City Ballet | Manchester City F.C. | Jersey City, New Jersey | Boulder, Colorado | New York City Opera | Colorado Springs | Guatemala City |
It was collected in the Otis Chalk Quarry 2 (TMM 31099 locality) from the Colorado City Formation, Chinle Group, dating to the early Carnian stage of the Late Triassic, about 228-227.5 million years ago.