Gastropoda - Heterostropha - Ringiculidae
Parent taxon: Ringicula according to Deshayes 1838
See also Squires 1999
Sister taxa: Ringicula (Ringiculella), Ringicula (Ringiculina), Ringicula (Ringiculina) clarki, Ringicula (Ringiculocosta), Ringicula (Ringiculopsis), 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 conovuliformis, Auricula miliaris, Auricula ovata, Auricula sulcata, Auricula miliola, Auricula cytharella, Auricula hordeola, Auricula bimarginata, Auricula ringens, Auricula acicula, Auricula terebellata
Subtaxa: Ringicula (Ringicula) cockburnensins Ringicula (Ringicula) pinguis Ringicula (Ringicula) pulchella
Ecology: epifaunal carnivore
Distribution:
• Quaternary of Japan (1 collection)
• Miocene of Indonesia (1)
• Eocene of Antarctica (1), United States (1: California)
• Tertiary of United States (1: California)
• Paleocene of Belgium (1), United States (12: California)
• Cretaceous of United States (54: Alabama, California, Maryland, Mississippi, Tennessee, Texas)
Total: 72 collections each including a single occurrence