Hoploscaphites

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Hoploscaphites
Temporal range: Upper Cretaceous to Lower Paleocene
Hoploscaphites; Pierre Shale. South Dakota
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Suborder: †Ancyloceratina
Family: †Scaphitidae
Subfamily: †Scaphitinae
Genus: †Hoploscaphites
Nowak, 1911
Species

See text

Hoploscaphites is an extinct

Upper Cretaceous and the Lower Paleocene
, included in the family Scaphitidae.

Morphology

It is considered by some to be a subgenus of Scaphites. Like Scaphites, the shell of Hoploscaphites is involute with the final whorl projecting forward and curving back on itself. Shells vary from compressed to inflated with convex sides. Tubercles normally present may be sparse or absent.

Distribution

Fossils of Hoploscaphites have been found in Antarctica, Austria, Belgium, Bulgaria, Canada (Alberta, Saskatchewan), Chile, Denmark, France, Germany, Greenland, India, the Netherlands, Turkmenistan, Ukraine and the United States (Arkansas, Colorado, Delaware, Kansas, New Jersey, New Mexico, North Dakota, South Dakota, Texas, Wyoming).

Myr) of the Paleogene, Hoploscaphites is the most widely and reliably recorded, with finds in Denmark, the Netherlands and the United States, and a possible record in Turkmenistan.[2][3][4][5][6]

Species

A number of species have been described in the genus:

  • H. angmartussutensis Birkelund, 1965
  • H. birkelundae Landman & Waage, 1993
  • H. crassus (Coryell & Salmon), 1934
  • H. comprimus (Owen, 1852)
  • H. constrictus (Sowerby, 1817)
  • H. criptonodosus Riccardi, (1983)
  • H. indicus (Forbes, 1846)
  • H. landesi Riccardi, 1983
  • H. melloi Landman & Waage, 1993
  • H. nicolletii (Morton, 1842)
  • H. pumilis Stephenson, 1941
  • H. quiriquinensis Wilckens, 1904
  • H. tenuistriatus (Kner, 1848)
  • H. vistulensis Blaszkiewicz, 1980
  • H. youngi Larson, 2016

References
  1. ^ Hoploscaphites at Fossilworks.org
  2. ISBN 978-94-017-9632-3
    , retrieved 2021-10-27
  3. ISSN 2245-7070
    .
  4. ^ W. M. Jagt, John (2012-01-01). "Ammonieten uit het Laat-Krijt en Vroeg-Paleogeen van Limburg". Grondboor & Hamer. 66 (1): 154–183.
  5. ISSN 0567-7920
    .
  6. ISSN 0567-7920
    .

Further reading

  • Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
  • Cobban, W.A. 1974. Ammonites from the Navesink Formation at Atlantic Highlands, New Jersey; USGS Prof Paper 845


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