*** Welcome to piglix ***

Crania (genus)

Crania
Temporal range: Campanian–Maastrichtian
Isocrania costata Sowerby 1823.jpg
Isocrania costata from the Maastrichtian of The Netherlands.
Scientific classification
Kingdom: Animalia
Phylum: Brachiopoda
Class: Craniata
Order: Craniida
Family: Craniidae
Genus: Crania
Retzius, 1781
Species
  • C. craniolaris (Linnaeus, 1758) type species = C. numulus, Anomia craniolaris, Nummulus brattenburgensis (Brattenburgpenningar)
  • C. antiqua Defrance, 1818
  • C. armata
  • C. aspera
  • C. bipartita
  • C. gracilis
  • C. intermedia
  • C. obsoleta
  • C. personata
  • C. porosa
  • C. prisca
  • C. proavia
  • C. ringens

Crania is an extinct genus of brachiopods that lived during the Upper Cretaceous.

Crania has small (up to 2 centimetres or 0.79 inches in diameter) circular shells. The dorsal valve is smooth or has slight pustules. The ventral valve is only attached posteriorly and has a thickened flat grainy rim.

As the genus Crania was erected early on in paleontology, many species have since be reassigned.


...
Wikipedia

...