Hildoceras semipolitum, Jurassic, FRA
€13.00
Available, delivery time: 1-3 days
Product information "Hildoceras semipolitum, Jurassic, FRA"
Beautiful typical ammonite for the Toarc, delivered in a Jousi box, as pictured.
This exhibit is Harpoceras falcifer.
Age: Jurassic
Locality: Causses Le Clapier ,France
Size: approx. 1,5 - 2 cm
Harpoceras is a genus from the extinct group of ammonites, characterized by shells that are sometimes quite large but only moderately developed (evolute). It belongs to the Toarcian, a chronostratigraphic stage of the Lower Jurassic, and is the second index fossil of this stage after the genus Dactyloceras.
The colors in the photos may differ slightly from the original for technical reasons.
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Collina mucronata, a beautiful specimen from the Toarcian Stage!Age: Jurassic, ToarcianLocality: Causses Le Clapier ,FranceSize: approx. 1,2 cmThe colors in the photos may differ slightly from the original for technical reasons.The photo serves as an example. You will receive a specimen of comparable quality.
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Beautiful typical ammonite for the Toarc, delivered in a Jousi box, as pictured.Age: Jurassic, ToarcianLocality: Causses Le Clapier ,FranceSize: approx. 1,7 cmThe 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. 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.These ammonites lived in the Jurassic, Middle Toarcian age, Bifrons Zone to lower Variabilis/Gradatus Zone (age range: 182.0 to 175.6 million years ago).The species is called: Mercaticeras umbilicatum.The colors in the photos may differ slightly from the original for technical reasons.
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