''Crania'' is an extinct genus of brachiopods that lived during the Upper
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...
.
Description
''Crania'' has small (up to 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.
Reassigned species
As the genus ''Crania'' was erected early on in
paleontology
Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossi ...
, many species have since be
reassigned.
See also
*
List of brachiopod genera This is a list of brachiopod genera which includes both extinct (fossil) forms and extant (living) genera (bolded). Names are according to the conventions of the International Code of Zoological Nomenclature.
A
*'' Aalenirhynchia''
*'' Aberia'' ...
*
Taxonomy of commonly fossilised invertebrates
References
Illustrations conchyliologiques ou description et figures de toutes les coquilles connues vivantes et fossiles, classées suivant le système de Lamarck modifié d'après les progrès de la science et comprenant les genres nouveaux et les espèces rècemment découvertes. Tome2 (1842). Jean-Charles Chenu, 1842
Prehistoric brachiopod genera
Campanian genus first appearances
Maastrichtian genus extinctions
Craniata
Brachiopods of Asia
Paleozoic life of New Brunswick
Paleozoic life of Quebec
Paleozoic life of Yukon
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