Helcionelloida - Pelagiellida - Pelagiellidae
Synonyms: Proeccyliopteridae Kobayashi 1962, Protoscaevogyridae Kobayashi 1962
Full reference: J. B. Knight. 1952. Primitive fossil gastropods and their bearing on gastropod classification. 117(13):1-56
Parent taxon: Pelagiellida according to Y. Oh et al. 2025
See also Bouchet et al. 2005, Bouchet et al. 2017, Ebbestad et al. 2024, Knight et al. 1960, Kouchinsky et al. 2011, Landing et al. 2002, Linsley and Kier 1984, Missarzhevsky 1989, Parkhaev 2001, Runnegar 1990, Runnegar and Jell 1976 and Thomas et al. 2020
Sister taxa: Aldanellidae, Pelagielloidea
Subtaxa: Pelagiella Proeccyliopterus Tannuspira Tianzhushanospira
Type: Pelagiella
Ecology: epifaunal grazer
Distribution:
• Cambrian of Antarctica (10 collections), Australia (127), Canada (12: Newfoundland and Labrador, Nova Scotia, Quebec), China (13), Czechia (2), Germany (4), Greenland (18), India (1), Iran (1), Kyrgyzstan (2), Mexico (2), Morocco (2), New Zealand (1), Poland (1), the Russian Federation (22), Spain (5), Svalbard and Jan Mayen (1), Sweden (1), Türkiye (1), the United Kingdom (4), United States (32: Georgia, Idaho, Indiana, Massachusetts, Montana, Nevada, Nevada and Utah, New York, Pennsylvania, Utah, Wisconsin)
• Solvan of Czechia (1), Kazakhstan (1), Morocco (5), the Russian Federation (3)
• Amgan of the Russian Federation (2)
• Placentian of United States (3: Massachusetts)
Total: 277 collections including 318 occurrences