Subfamily Thecaliinae Dall 1903 (clam)
Bivalvia - Carditida - Carditidae
Parent taxon: Carditidae according to J. G. Carter et al. 2011
See also Bieler and Mikkelsen 2006, Bouchet et al. 2010, Moore 1992 and Vokes 1980
Sister taxa: Ainicardita, Cardiocardita, Cardita, Carditamera, Carditamerinae, Carditesinae, Carditinae, Coanicardita, Crassicardia, Cyclocardia, Glans, Hippocampocardia, Ludbrookia, Lunulicardita, Miodomeridinae, Miodontiscus, Neovenericor, Oesterheldia, Pleuromeris, Schizocardita, Venericardiinae, Venericardinae, Vetericardiella, Xenocardita
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Mexico (2 collections), United States (6: California)
Total: 8 collections each including a single occurrence