Gleviceras

Gleviceras
Temporal range: Upper Sinemurian, 196.5–186.7 Ma

[1][2]

Fossil of Gleviceras guabalianum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Psilocerataceae
Family: Oxynoticeratidae
Genus: Gleviceras
Buckman, 1918
Synonyms
  • Glevumites Buckman 1924
  • Guibaliceras Buckman 1918
  • Riparioceras Schindewolf 1962
  • Tutchericeras Buckman 1919
  • Victoriceras Buckman 1918

[1]

Gleviceras is an ammonite genus (order Ammonitida) that lived during the Early Jurassic Period, found in Canada, Hungary, Mexico and the United Kingdom.

Glevumites Buckman 1924, Guibaliceras Buckman 1918, Riparioceras Schindewolf 1962, Tutchericeras Buckman 1919, and Victoriceras Buckman 1918 are considered synonyms.

Description

Gleviceras produced laterally compressed involute shells with a small umbilicus, close spaced sinuous ribbing, and a sharp keel along venter. The suture in ammonitic with deep narrow complex lobes. It is similar to Oxynoticeras except for being less narrow and having a more rounded venter. Fastigiceras differs primarily in having an occluded unbilicus.

Taxonomy

Gleviceras was described by Buckman in 1918 and is included in the Family Oxynoticeratidae and superfamily Psilocerataceae. Species include:

Gleviceras is closely related to the genera Cheltonia, Hypoxynoticeras, Oxynoticeras, Paracymbites, Paroxynoticeras, Radstockiceras and Slatterites.

References

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