Gastropoda - Heterostropha - Ringiculidae
Alternative spelling: Ringiculopsis
Parent taxon: Ringicula according to R. L. Squires and L. R. Saul 2001
See also Sepkoski 2002
Sister taxa: Ringicula (Ringicula), Ringicula (Ringiculella), Ringicula (Ringiculina), Ringicula (Ringiculina) clarki, Ringicula (Ringiculocosta), Ringicula acuta, Ringicula arctatoides, Ringicula blaszyki, Ringicula buccinea, Ringicula castigata, Ringicula celata, Ringicula clarki, Ringicula culbertsoni, Ringicula dalli, Ringicula discrepans, Ringicula dominicana, Ringicula minor, Ringicula mississippiensis, Ringicula nuda, Ringicula punjabensis, Ringicula semperi, Ringicula striata, Ringicula trapaquara, Ringicula trapequara, Ringicula turgida, Ringicula varia, Ringicula ventricosa, Auricula sulcata, Auricula ovata, Auricula ringens, Auricula acicula, Auricula miliaris, Auricula hordeola, Auricula cytharella, Auricula miliola, Auricula bimarginata, Auricula conovuliformis, Auricula terebellata
Subtaxa: Ringicula (Ringiculopsis) hesperiae
Distribution:
• Cretaceous of Mexico (2 collections), United States (4: California)
Total: 6 collections each including a single occurrence