Crioceratites
Encyclopedia
Crioceratites is an ammonite
Ammonite
Ammonite, as a zoological or paleontological term, refers to any member of the Ammonoidea an extinct subclass within the Molluscan class Cephalopoda which are more closely related to living coleoids Ammonite, as a zoological or paleontological term, refers to any member of the Ammonoidea an extinct...

 genus from the Early Cretaceous
Early Cretaceous
The Early Cretaceous or the Lower Cretaceous , is the earlier or lower of the two major divisions of the Cretaceous...

 belonging to the Ancylocerataceae
Ancylocerataceae
The Ancylocerataceae is a superfamily of typically uncoilded and loosely coilded ammonoids, presently comprising nine families, the Acrioceratidae Ancyloceratidae Crioceratitidae, Hemihoplitidae, Heteroceratidae, Himantoceratidae, Labeceratidae, Leptoceratoididae, and Ptychoceratidae .The...

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Crioceritites is coiled in an open, normally equiangular spiral with an oval or subquadrate whorl section. The surface is banded by fine, dense, rounded ribbing sectioned by periodically spaced thick and often spinose ribs

Crioceratites was formerly included in the Ancyloceratidae, in the subfamily Crioceratinae which was subsequently elevated in rank to the family Crioceratidae.

Crioceras and Toxoceras d'Orbigny and possibly Emericiceras Sarka 1954 are junior synonyms

Crioceratities fossils have been found in Lower Cretaceous Hauterevian-Barremanian, sediments in Europe, Africa, Asia, North America and South America.

External links

  • Crioceratites in the Paleobiology Database
    Paleobiology Database
    ' is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms.-History:The Paleobiology Database was founded in 2000. It has been funded by the National Science Foundation and the Australian Research Council...

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