Echinoidea - Irregularia - Clypeidae
Full reference: J. Lambert. 1898. Note sur les Echinides de la Craie de Ciply. Bulletin de la Société Belge de Géologie, de Paléontologie et d’Hydrologie 11:141-190
Parent taxon: Neognathostomata according to A. Kroh and A. B. Smith 2010
See also Kier 1962, Kier 1966, Larrain and Biró-Bagóczky 1985 and Smith 1991
Sister taxa: Apatopygidae, Archiaciidae, Bothryopneustes, Cassiduloida, Clypeasteroida, Clypeolampadidae, Echinolampadoida, Nucleolitidae, Pygaulidae
Subtaxa: Astrolampas Clypeus Colliclypeus Pseudopygurus Pygurus
Ecology: epifaunal grazer-deposit feeder
Distribution:
• Cretaceous of Angola (1 collection), Brazil (1), Egypt (3), France (34), Portugal (3), Saudi Arabia (5), Switzerland (12), Ukraine (1), the United Arab Emirates (1)
• Jurassic of Chile (2), Ethiopia (1), France (1), Germany (1), India (1), Kenya (1), Madagascar (6), Poland (7), Saudi Arabia (13), Somalia (5), Tunisia (2), the United Kingdom (4), United States (1: Texas)
Total: 106 collections including 117 occurrences