Английская Википедия:Acanthohoplites
Шаблон:Short description Шаблон:Automatic Taxobox
Acanthohoplites is an extinct genus of ammonites in the family Parahoplitidae that lived in the Aptian and Early Albian stages of the Early Cretaceous.[1]
Taxonomy
The taxonomic position in the Treatise on Invertebrate Paleontology Pt L, 1957 placed the genus into the family Deshayesitidae. Newer classifications have revised that placement and the genus is now included into the family Parahoplitidae.[2] Parahoplites and Hypacanthoplites are similar genera.
Description
These ammonites have a strongly ribbed shell and ammonitic suture. Early whorls are coronate, which later become round, then oval in section. Primary ribs may have swellings (bullae) at the umbilicus or are without. In early stages primary ribs branch mid flank at prominent lateral tubercles. In later stages lateral tubercles are reduced or absent and primary ribs branch simply at the umbilical shoulder or, again, mid flank. Sutural elements are subquadrate with narrow, shallow embayments. The first lateral lobe tends to be symmetrical.
Species
The following species have been described, either as Acanthoplites or Acanthohoplites.[1] Шаблон:Div col
- A. abichi
- A. aschiltaensis
- A. belohasifakaensis
- A. berkleyi
- A. bigoureti
- A. erraticus
- A. hannoverensis
- A. hesper
- A. impetrabilis
- A. interiectus[3]
- A. manerensis
- A. midoensis
- A. mitiensis
- A. paucicostatus
- A. schucherti
- A. soaranensis
- A. teres
- A. trifurcatus
- A. venustus
The species A. nolani was described as Hoplites nolani and later designated the type species of the genus Nolaniceras in 1961, and was subsequently renamed as Nolaniceras nolani.[2]
Distribution
Acanthohoplites has been found in Upper Aptian and Lower Albian sediments in Europe, Central Asia, East Africa, North and South America:[1] Шаблон:Div col
- Río Mayer Formation, Argentina
- Lowell Formation, Arizona
- Paja Formation, Barichara, Colombia[3]
- Grès verts helvétiques Formation, France
- Georgia
- Ochtrup, Germany
- Sardinia, Italy
- Madagascar
- Clansayes and La Peña Formations, Mexico
- Lemgo Formation, Morocco
- Maputo Formation, Mozambique
- Hokodz River Basin, Russia
- Makatini Formation, South Africa
- Lower Greensand Formation, United Kingdom
- Morocoto River, Venezuela
References
Bibliography
Further reading
- Arkell,et al., Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geol Soc of America and Univ Kansas press, 1957. R.C. Moore (ed)
- Sepkoski's Online Genus Database
Шаблон:Geology of South Africa Шаблон:Taxonbar
- ↑ 1,0 1,1 1,2 Acanthohoplites at Fossilworks.org
- ↑ 2,0 2,1 Шаблон:Cite journal
- ↑ 3,0 3,1 Gómez & Salgado, 2017, p.17
- Английская Википедия
- Ammonitida
- Early Cretaceous ammonites
- Aptian life
- Albian life
- Early Cretaceous animals of Africa
- Ammonites of Africa
- Cretaceous Madagascar
- Fossils of Madagascar
- Cretaceous Morocco
- Fossils of Morocco
- Cretaceous Mozambique
- Fossils of Mozambique
- Cretaceous South Africa
- Fossils of South Africa
- Early Cretaceous animals of Asia
- Ammonites of Asia
- Cretaceous Georgia (country)
- Fossils of Georgia (country)
- Cretaceous Russia
- Fossils of Russia
- Early Cretaceous ammonites of Europe
- Cretaceous France
- Fossils of France
- Cretaceous Germany
- Fossils of Germany
- Cretaceous Italy
- Fossils of Italy
- Cretaceous United Kingdom
- Fossils of Great Britain
- Fossils of England
- Early Cretaceous ammonites of North America
- Cretaceous Mexico
- Fossils of Mexico
- Cretaceous United States
- Fossils of the United States
- Early Cretaceous animals of South America
- Ammonites of South America
- Cretaceous Argentina
- Fossils of Argentina
- Cretaceous Colombia
- Fossils of Colombia
- Cretaceous Venezuela
- Fossils of Venezuela
- Fossil taxa described in 1908
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