Английская Википедия:Holcodiscus
Шаблон:Short description Шаблон:Automatic taxobox
Holcodiscus is an extinct ammonite genus placed in the family Holcodiscidae. Species in this genus were fast-moving nektonic carnivores.[1] The type species of the genus is Ammonites caillaudianus.[1]
Description
Circular to rectangular whorl section; fine, low, straight or flexuous simple or branched ribs, periodically truncated by thin, high, enlarged ribs bearing lateral and ventrolateral tubercles; inner whorls tending to have depressed whorl section and to resemble Olcostephanus.[2]
Species
Source:[1]
- Holcodiscus caillaudianus d'Orbigny 1850
- Holcodiscus camelinus d'Orbigny 1850
- Holcodiscus hauthali Paulcke 1907
- Holcodiscus tenuistriatus Paulcke 1907
Distribution
Fossils of species within this genus have been found in the Cretaceous sediments of Austria, Bulgaria, Chile, Colombia, Czech Republic, Slovakia, France, Italy, Morocco, Spain and Russia.[1]
Gallery
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Holcodiscus mediocostatus Tzankov, 1935, Barremian, Razgrad, Cr1 1716 (Coll. V. Tzankov) at the Sofia University Museum of Paleontology and Historical Geology
Notes
External links
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- Английская Википедия
- Cretaceous ammonites
- Ammonitida genera
- Desmoceratoidea
- Ammonites of Europe
- Early Cretaceous genus first appearances
- Santonian genus extinctions
- Barremian life
- Hauterivian life
- Cretaceous Italy
- Fossils of Italy
- Cretaceous France
- Fossils of France
- Fossils of Georgia (country)
- Cretaceous Spain
- Fossils of Spain
- Ammonites of North America
- Fossils of the United States
- Ammonites of South America
- Cretaceous Argentina
- Fossils of Argentina
- Cretaceous Colombia
- Fossils of Colombia
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