Bivalvia - Cardiida - Cardiidae
Alternative spelling: Phlogocardia
Full reference: R. B. Stewart. 1930. Gabb's California Cretaceous and Tertiary type lamellibranchs. The Academy of Natural Sciences of Philadelphia Special Publication 3:1-314
Parent taxon: Trachycardium according to E. V. Coan and P. Valentich-Scott 2012
See also Sepkoski 2002, Vokes 1989 and Woodring 1982
Sister taxa: Cardium (Trachycardium) greenhoughi, Cardium (Trachycardium) minbuense, Cardium (Trachycardium) ochilleanum, Cardium (Trachycardium) polycolpatum, Cardium (Trachycardium) protosubrugosum, Cardium (Trachycardium) riachuelense, Cardium (Trachycardium) sindiense, Trachycardium (Mexicardia), Trachycardium (Regozara), Trachycardium (Trachycardium), Trachycardium cotteri, Trachycardium egmontianum, Trachycardium enode, Trachycardium eufaulensis, Trachycardium eversum, Trachycardium halaense, Trachycardium isocardia, Trachycardium kinsmarae, Trachycardium lacunosum, Trachycardium mollyni, Trachycardium multiradiatum, Trachycardium planicostata, Trachycardium puelchum, Trachycardium reynoldsi, Trachycardium rugosum, Trachycardium syriacum, Trachycardium thalassium, Cardium (Granocardium) sabulosum
Subtaxa: Trachycardium (Phlogocardia) belcheri Trachycardium (Phlogocardia) cestum Trachycardium (Phlogocardia) leonense Trachycardium (Phlogocardia) lingualeonis Trachycardium (Phlogocardia) stiriatum
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Pliocene of Costa Rica (2 collections), the Dominican Republic (1), Ecuador (1), Jamaica (1), Panama (7)
• Miocene to Pliocene of the Dominican Republic (3)
• Miocene of Colombia (2), the Dominican Republic (3), Panama (17), United States (4: Florida)
Total: 41 collections each including a single occurrence