Mercaticeras
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| Fossil of Mercaticeras species, from Luserna, Trento | |
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| Genus: | Mercaticeras |
†Mercaticeras is a genus of ammonites belonging to the family Hildoceratidae.
Etimology
The genus name Mercaticeras derives from Michele Mercati (a Tuscan physician who lived in the 16th century, superintendent of the Vatican Botanical Gardens) and ceras = horn, therefore the genus name means horn of Mercati.[1]
Description
Mercaticeras shows a subquadratic section, sometimes wider than high. The shell is averagely evolute, with a spiral that grows more rapidly in the internal whirls. It is adorned by sturdy, clavate, simple ribs. The suture is simple.[1]
Fossil record
These ammonites lived in the Jurassic, lower Toarcian age (age range: 182.0 to 175.6 million years ago).[2] Fossils of this genus can be found in Canada, France, Germany, Hungary, Italy, Morocco, Spain and Tunisia.[3]
Species
Species within this genus include:[3]
- † Mercaticeras dilatatum Meneghini 1883
- † Mercaticeras dilatum Meneghini 1883
- † Mercaticeras hellenicum Renz 1906
- † Mercaticeras humeralis Merla 1933
- † Mercaticeras mercati Hauer 1856
- † Mercaticeras rursicostatum Merla 1932
- † Mercaticeras thyrrenicum Fucini 1905
- † Mercaticeras umbilicatum Buckman 1913
See also
External links
References
- ^ a b c Ambiente e Biodiversità (in Italian)
- ^ Sepkoski, Jack Sepkoski's Online Genus Database
- ^ a b Paleobiology Database
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