Echinoidea - Cassiduloida - Cassidulidae
Full reference: L. Agassiz and P. J. E. Desor. 1847. Catalogue raisonné des familles, des genres, et des espèces de la classe des échinodermes. Annales des Sciences Naturelles, Troisième Série, Zoologie 7-8
Parent taxon: Cassidulina according to A. Kroh and A. B. Smith 2010
See also Clark and Twitchell 1915, Grant and Hertlein 1938, Kew 1920, Kier 1962, Kier 1966 and Smith 1995
Sister taxa: none
Subtaxa: Breynella Cassidulus Catopygus Echanthus Hypsopygaster Nucleopygus Ochetes Rhyncholampas Stigmatopygus
Ecology: slow-moving semi-infaunal detritivore
Distribution:
• Quaternary of United States (4: Florida collections)
• Pliocene of United States (1: Florida)
• Hemphillian of United States (1: Alabama)
• Miocene to Pliocene of United States (1: Florida)
• Miocene of Brazil (2), Mexico (1), United States (2: Florida, North Carolina)
• Oligocene to Miocene of United States (2: Florida)
• Oligocene of Cuba (3), United States (29: Alabama, Florida, Georgia, North Carolina)
• Eocene of Colombia (1), Egypt (1), Germany (1), Peru (1), United States (29: California, Florida, Georgia, North Carolina, South Carolina)
• Paleocene of Denmark (1), Nigeria (1), United States (4: Alabama, Georgia)
• Cretaceous to Paleogene of the Netherlands (2)
• Cretaceous of Belgium (6), Brazil (1), Cuba (1), France (30), Jamaica (1), the Netherlands (7), Oman (4), Saudi Arabia (1), Spain (4), the United Kingdom (17), United States (12: California, Mississippi, New Jersey, Texas)
Total: 171 collections including 224 occurrences