Holcodiscidae
Holcodiscidae is an ammonite family placed in the Ammonite superfamily Desmoceratoidea.[1][2]
| Holcodiscidae | |
|---|---|
 | |
| Spitidiscus species from Alpes-de-Haute-Provence | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Superfamily: | †Desmoceratoidea |
| Family: | †Holcodiscidae Spath, 1923 |
| Synonyms | |
| |
Description
Moderately involute with rounded, rectangular, or depressed whorl section; straight or sinuous, fine, dense ribs typically continuing over venter and may be periodically truncated by oblique, enlarged ribs, with or without umbilical, lateral and ventrolateral tubercles. Suture rather simple.[2][3]
Genera
- Astieridiscus
- Holcodiscus
- Jeanthieuloyites
- Parasaynoceras
- Spitidiscus
Distribution
Fossils of species within this family have been found in the Cretaceous sediments in Argentina, Austria, Bulgaria, Chile, Colombia, the Czech Republic, Czechoslovakia, France, Hungary, Italy, Mexico, Morocco, Portugal, Romania, Slovakia, Spain and Russia.[1][2]
References
- The Paleobiology Database
- Wright, C. W. with J.H. Callomon and M.K. Howarth (1996), Mollusca 4 Revised, Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p.48.
- Tzankov, V. & Breskovski, S. (1982), "Volume et contenu de la famille Holcodiscidae Spath, 1924," C.R. Acad. bulg. Sci., 35, 4, 491-93.
- Arkell, W. J. et al., (1957). Mesozoic Ammonoidea in Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geological Society of America and Univ Kansas Press.
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