Английская Википедия:Hildoceras

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Файл:Hildoceras NT.jpg
Recreation of Hildoceras
Файл:Hildoceras-fajok a Gerecse hegységből.tif
Hildoceras species from the Toarcian Bifrons Zone of the Gerecse Mts, Hungary. Collection Eötvös University, Dep. Palaeontology, Budapest.

Hildoceras is a genus of ammonite from the Jurassic[1] period in the family Hildoceratidae. The shells are characterized by a narrow discoidal evolute shape, keeled venter, concave ribs along the outer flanks, and a shallow spiral groove running along smooth inner flanks. Whorls slightly overlap, cross sections are compressed. The ventral keel is bordered on either side by a shallow groove. The genus was named by Alpheus Hyatt after Saint Hilda in 1876.

Файл:Hildoceras spp.jpg
Hildoceras sp morphological and external structural characteristics

Distribution

Jurassic of Bulgaria, France, Germany, Hungary, Italy, Japan, Luxembourg, Serbia and Montenegro, Spain, the United Kingdom and Iran.[2][3]

Species

References

Notes

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Bibliography

Шаблон:Taxonbar


Шаблон:Ammonitina-stub

  1. Ошибка цитирования Неверный тег <ref>; для сносок Sepkoski Ceph не указан текст
  2. Шаблон:Cite web
  3. Seyed-Emami, Kazem, et al. "Toarcian and Aalenian (Jurassic) ammonites from the Shemshak Formation of the Jajarm area (eastern Alborz, Iran)." Paläontologische Zeitschrift 79.3 (2005): 349-369.