Echinoidea - Irregularia - Nucleolitidae
Alternative spellings: Cassidulus (Pygorhynchus), Nucleolites (Pygorhynchus)
Synonym: Botriopygus d'Orbigny 1855 [objective synonym]
Parent taxon: Nucleolitidae according to A. Kroh 2010
See also Clark and Twitchell 1915, Forbes 1846, Kier 1962, Kier 1966, Sanchez Roig 1926 and Sepkoski 2002
Sister taxa: Clypeopygus, Hemicara, Heteronucleus, Hypopygurus, Nucleolites, Oolopygus, Phyllobrissus, Plagiochasma, Pseudonucleus, Pseudosorella, Pygaulus, Pygopistes
Subtaxa: Botriopygus alabamensis Botriopygus antillarum Botriopygus parallelus Cassidulus (Pygorhynchus) sabistonensis Nucleolites (Pygorhynchus) planatus Nucleolites (Pygorhynchus) testudo Pygorhynchus obovatus
Ecology: epifaunal grazer-deposit feeder
Distribution:
• Miocene of United States (1: North Carolina collection)
• Eocene of Cuba (2)
• Cretaceous of Egypt (1), France (19), Peru (2), Portugal (1), Switzerland (5)
Total: 31 collections including 33 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.