Bivalvia - Hippuritida - Plagioptychidae
Parent taxon: Radiolitoidea according to P. W. Skelton 2013
See also Bouchet et al. 2010, Carter et al. 2011, Nevesskaja 2009 and Steuber 1999
Sister taxa: Caprinulidae, Caprotinidae, Diceratidae, Hippuritidae, Monopleuridae, Polyconitidae, Radiolitidae, Rousselia, Trechmannellidae
Subtaxa: Coralliochama Mitrocaprina Paracaprinula Plagioptychus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Cretaceous of Algeria (1 collection), Austria (16), Bulgaria (1), Costa Rica (3), Croatia (3), Cuba (3), the Czech Republic (3), France (4), Greece (6), Hungary (1), Italy (26), Jamaica (17), Jordan (1), the Marshall Islands (1), Mexico (12), Serbia and Montenegro (3), Spain (22), Turkey (3), United States (5: California)
Total: 131 collections including 161 occurrences