Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Cephalopoda
Subclassis: †Ammonoidea
Ordo: Clymeniida
Subordo: Clymeniina
Superfamilia: Clymeniaceae
Familia: Clymeniidae
Genus: Clymenia
Name
Clymenia Münster, 1834
References
The Paleobiology Database Accessed 11/23/08
Clymenia is a genus in the ammonoid order Clymeniida, restricted to the Upper Devonian, characterized as with all clymeniids by a dorsal siphuncle that runs along the inside of the whorls, unusual for ammonoids.
Clymenia has a closely coiled evolute shell that may be faintly ribbed. The dorsum, on the inside of the whorl, is slightly impressed, a result of the outermost whorl slightly enveloping the previous. The venter may be rounded or acute. The suture is simple, with a broad ventral saddle, broad lateral lobe, a dorso-lateral saddle, and a moderately deep hidden dorsal lobe. Septal necks are usually short and do not form a continuous tube. The suture and siphuncle are characteristic of the family.
Clymenia is type genus of the family Clymeniidae. Is fossils have been found in Europe and Western Australia.
References
Notes
Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
"Paleobiology Database - Clymenia". Retrieved 17 December 2021.
Bibliography
Rocks, Minerals & Fossils of the World by Chris Pellant and Roger Phillips
Treatise on Invertebrate Paleontology, Part L Ammonoidea; Geological Society of America and Univ of Kansas Press, 1964
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