Alternative spellings: Echinoneina, Echinoneoina
Full reference: H. L. Clark. 1925. A Catalogue of the Recent Sea-Urchins (Echinoidea) in the Collection of the British Museum (Natural History). Oxford University Press, London 1-250
Parent taxon: Irregularia according to A. Kroh and A. B. Smith 2010
See also Grant and Hertlein 1938, Nisiyama 1966 and Wagner and Durham 1966
Sister taxa: Atelostomata, Holectypoida, Microstomata, Pygasteridae
Subtaxa: Cluniaster Conulidea Echinoneidae Mattsechinus
Ecology: epifaunal grazer-deposit feeder
Distribution:
• Quaternary of Taiwan (1 collection)
• Pliocene of Cuba (1), Portugal (1), United States (1: California)
• Miocene of Algeria (1), Italy (1), Jamaica (1), Japan (1)
• Oligocene to Miocene of United States (1: Florida)
• Oligocene of Cuba (1), Jamaica (1)
• Eocene of Cote D'Ivoire (3), Cuba (1), France (1), Jamaica (1), Pakistan (1), Turkey (1), United States (5: California, Florida, Georgia)
• Paleocene of France (1), United States (3: Alabama)
• Cretaceous of Brazil (1), Cuba (1), Egypt (4), France (26), Germany (4), Hungary (4), Iran (1), Italy (1), Kazakhstan (1), Mexico (2), Oman (8), Poland (1), Portugal (14), Serbia and Montenegro (1), Spain (22), Switzerland (9), Turkey (2), the United Arab Emirates (1), the United Kingdom (5), United States (9: Texas)
Total: 145 collections including 157 occurrences