Melchiorites

Last updated

Melchiorites
Temporal range: Aptian [1]
Scientific classification
Kingdom:
Phylum:
Class:
Order:
Family:
Genus:
Melchiorites

Spath, 1923
Species [2]
  • M. melchioris

Melchiorites is a desmoceratid ammonite genus included in the subfamily Puzosiinae. Member species are characterized by an essentially evolute shell in which the early whorls are smooth, with sinuous radial or oblique constrictions but in which later whorls have feeble intermediate ribs on the outer part of the sides and venter.

Melchioites is known from Lower Cretaceous of Europe, north Africa, and California. The type species, Melchiorites melchioris is from the Upper Albian of France.

Related Research Articles

<i>Stephanoceras</i> Genus of molluscs (fossil)

Stephanoceras is an extinct genus of Stephanoceratoid ammonite which lived during the Bajocian. It is the type genus of the family Stephanoceratidae.

<i>Australiceras</i> Genus of molluscs (fossil)

Australiceras is an extinct ammonite genus from the upper part of the Early Cretaceous, Aptian stage, included in the family Ancyloceratidae.

Algerites is middle Cretaceous (Cenomanian) anisoceratid ammonoid with a close-coiled adult shell in which the whorls at that stage are in close contact, after starting off with openly coiled whorls, and in which every rib has a pair of sharp ventral tubercles.

<i>Ammonoceratites</i> Genus of molluscs (fossil)

Ammonoceratites is an extinct genus of ammonoid cephalopod known from the Albian of British Columbia, Madagascar, New Zealand, and Japan, included in the Lytoceratidae.

<i>Aspidoceras</i> Genus of molluscs (fossil)

Aspidoceras is an extinct ammonoid cephalopod genus belonging to the family Aspidoceratidae.

<i>Audaxlytoceras</i> Genus of molluscs (fossil)

Audaxlytoceras is an extinct genus of lytoceratid ammonites.

Barremites is an ammonoid cephalopod belonging to the family Desmoceratidae, that lived during the Hauterivian and Barremian stages of the Early Cretaceous. Its shell is moderately to very involute, with the outer whorl strongly embracing the inner whorls, and variably compressed. Sides are generally smooth and marked with sinuous or falcate collars marking intervals of growth and bearing feeble striae to moderately distinguished ribs.

<i>Barroisiceras</i> Genus of molluscs (fossil)

Barroisiceras is an acanthoceratacean ammonite from the Upper Cretaceous, Coniacian, included in the family Collignoniceratidae.

Euaptetoceras is an evolute hildoceratoid ammonite from the lower Middle Jurassic, included in the family Hammatoceratidae and the subfamility Hammatoceratinae. The genus may be a junior synonym for Eudmetoceras of Buckman, 1920.

Oecotraustes is an extinct cephalopod genus included in the ammonid family Oppeliidae and named by Waagen in 1869. The genus lived during the Middle Jurassic.

Oecoptychius is an extinct genus of fossil ammonite cephalopods. The species lived during the Middle Jurassic.

<i>Peltoceras</i> Genus of molluscs (fossil)

Peltoceras is an extinct ammonite genus from the aspidoceratid subfamily Peltoceratinae that lived during the later part of the Middle Jurassic.

Oxynoticeratidae Extinct family of ammonites

Oxynoticeratidae is a family of true ammonites included in the superfamily Psiloceratoidea.

Eoderoceras is an evolute, round whorled ammonite from the Lower Jurassic with an outer row of distinct spines, and in some, an inner row of tubercles, on either side; ribs only on the inner whorls.

<i>Kepplerites</i> Genus of molluscs (fossil)

Kepplerites is a moderately evolute ammonite from the lower Callovian included in the Stephanoceratoidea.

Lytoceratinae Extinct subfamily of molluscs

Lytoceratinae is a subfamily of ammonoid cephalopods that make up part of the family Lytoceratidae.

Ptycholytoceras is a genus of fast-moving nektonic ammonoid carnivores included in the Lytoceratinae in which the shell has round inner and depressed outer whorls and sides with dorso-ventrally sloping folds that do not pass onto the venter.

<i>Kossmatella</i>

Kossmatella is an extinct genus of ammonoid cephalopods belonging to the family Lytoceratidae. These fast-moving nektonic carnivores lived in the Cretaceous period, from Albian age to Cenomanian age.

<i>Holcodiscus</i> Genus of molluscs (fossil)

Holcodiscus is an ammonite genus placed in the family Holcodiscidae. Species in this genus were fast-moving nektonic carnivores. The type species of the genus is Ammonites caillaudianus.

<i>Hammatoceras</i> Genus of molluscs (fossil)

Hammatoceras is a genus of ammonites belonging to the family Hammatoceratidae which lived during the Toarcian stage of the Early/Lower Jurassic between about 184 and 175 million year ago.

References

Notes
  1. Sepkoski, Jack (2002). "Sepkoski's Online Genus Database" . Retrieved 2014-05-28.
  2. "Paleobiology Database - Melchiorites" . Retrieved 17 December 2021.
Bibliography