Otohoplites

Otohoplites; Temporal range: Albian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Suborder:	Ammonitina
Superfamily:	Hoplitoidea
Family:	Hoplitidae
Subfamily:	Hoplitinae
Genus:	Otohoplites; Steinmann, 1925
Type species
	Ammonites raulinianus (d'Orbigny, 1841);

Otohoplites is a genus of ammonite that lived in the Early Albian and whose fossils were found in Svalbard, Denmark, England, France, Austria, Poland, Russia and Kazakhstan. It has evolved from Hemisonneratia and gave rise to genus Hoplites.[1] Shells belonging to this genera are rather inflated to compressed and have zigzaging, or looped ribs that ends in oblique ventrolateral clavi. Usually, ribs are zigzaging through venter. Macroconchs have smooth body chamber and rounded venter.[2]

Species

Currently, there is a confusion in the systematics of this genus and some species can be just morphological variants of others. These are some of the species belonging to Otohoplites:[1]

O. auritiformis Spath, 1925 (O. sinzowi Saveliev, 1973 is a junior synonym)
O. bulliensis Destombes, 1973
O. destombesi Casey, 1965
O. elegans Spath, 1925
O. glyphus Casey, 1965
O. guersanti (d'Orbigny, 1841)
O. icarus Casey, 1965
O. involutus Casey, 1965
O. maxinae Casey, 1980
O. normanniae Destombes, Juignet & Rioult, 1974
O. waltoni Casey, 1965 (O. larcheri Destombes, 1979 is a junior synonym)
O. oweni Casey, 1965
O. polygonalis Casey, 1965
O. raulinianus (d'Orbigny, 1841)
O. simplex Casey, 1965
O. subchloris Casey, 1965
O. subguersanti Casey, 1965
O. subhilli Spath, 1942 (O. venustus Saveliev, 1973 is a junior synonym)

References

Amédro, F., Matrion, B., Magniez-Jannin, F., & Touch, R. (2014). La limite Albien inférieur-Albien moyen dans l’Albien type de l’Aube (France): ammonites, foraminifères, séquences. Revue de Paléobiologie, 33(1), 159-279.
Wright, C. W. (1996). Treatise on Invertebrate Paleontology, Part L, Mollusca 4: Cretaceous Ammonoidea (with contributions by JH Calloman (sic) and MK Howarth). Geological Survey of America and University of Kansas, Boulder, Colorado, and Lawrence, Kansas, 362.

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[Amedro2014-1] Amédro, F., Matrion, B., Magniez-Jannin, F., & Touch, R. (2014). La limite Albien inférieur-Albien moyen dans l’Albien type de l’Aube (France): ammonites, foraminifères, séquences. Revue de Paléobiologie, 33(1), 159-279.

[Wright1996-2] Wright, C. W. (1996). Treatise on Invertebrate Paleontology, Part L, Mollusca 4: Cretaceous Ammonoidea (with contributions by JH Calloman (sic) and MK Howarth). Geological Survey of America and University of Kansas, Boulder, Colorado, and Lawrence, Kansas, 362.