Bivalvia - Cardiida - Cardiidae
Alternative combinations: Cardium quadragenarium, Cardium quadrigenarium, Laevicardium quadragenarium, Trachycardium (Dallocardia) quadragenarium, Trachycardium (Dallocardia) quadrigenarium, Trachycardium quadragenarium
Belongs to Dallocardia according to A. Hendy 2021
See also Arnold 1907, Ashley 1895, Coan et al. 2000, Moore 2003, Powell and Stevens 2000, Stanton 1966, Stewart 1930, Woodring 1982 and Woodring and Bramlette 1950
Sister taxa: Dallocardia senticosum, Dallocardia vaquerosense, Dallocardia woodringi, Trachycardium (Dallocardia) baiterum, Trachycardium (Dallocardia) bowdenense, Trachycardium (Dallocardia) dominicense, Trachycardium (Dallocardia) muricatum, Trachycardium (Dallocardia) phlyctaena, Trachycardium (Dallocardia) puebloense, Trachycardium (Dallocardia) sagaseri, Trachycardium (Dallocardia) tintinnabularum
Subtaxa: Trachycardium (Dallocardia) quadragenarium fernandoensis
Distribution:
• Quaternary of Mexico (2 collections), United States (34: California)
• Blancan of United States (1: California)
• Pliocene to Pleistocene of United States (2: California)
• Pliocene of United States (12: California)
• Miocene of United States (7: California)
• Eocene of Mexico (1)
Total: 59 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.