Robert Calvert | formation | Charles Calvert, 5th Baron Baltimore | Calvert Vaux | Benedict Calvert, 4th Baron Baltimore | Command (military formation) | Frederick Calvert, 6th Baron Baltimore | Elliot Formation | Calvert County, Maryland | Lance Formation | Crato Formation | Chinle Formation | Charles Calvert, 3rd Baron Baltimore | Calvert Expedition | Benedict Leonard Calvert | Two Medicine Formation | Tamayama Formation | Missing Man Formation (band) | Missing Man Formation | Marcellus Formation | Kirkwood Formation | Gettysburg Formation | Clarens Formation | Calvert Hall College High School | Calvert County | Whitby Mudstone Formation | Tunbridge Wells Sand Formation | St. Paul Street-Calvert Street | Santana Formation | Phalanx formation |
The researchers identified the species from a partial skeleton found in 1990 in Caroline County, Virginia, the site of a prehistoric ocean, in middle Miocene Calvert Formation rocks.