Holcodiscidae Explained

Holcodiscidae is an ammonite family placed in the superfamily Desmoceratoidea.^{[1] [2]}

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]}

External links

• Web site: Holcodiscidae . mindat.org . 30 December 2021.
• Web site: Holcodiscidae . Encyclopedia of Life (EOL) . 30 December 2021.
• Book: [[Claud William Wright |Wright C.W.]] with J.H. Callomon and M.K. Howarth . 1996 . Mollusca 4 Revised: Cretaceous Ammonoidea . 4 . Treatise on Invertebrate Paleontology Part L . Roger L. Kaesler . Boulder, Colorado and Lawrence, Kansas . The Geological Society of America & University of Kansas Press . registration . 48 . Internet Archive.
• Book: . Furnish, W. M. . Kummel, Bernhard . Miller, A.K. . Moore, R.C. . Schindewolf, O.H. . 1957 . Part L, Mollusca 4: Cephalopoda, Ammonoidea . Treatise on Invertebrate Paleontology . Geological Society of America and University of Kansas Press . Raymond C. Moore . Raymond Cecil Moore . registration . L371 . Internet Archive.

Notes and References

1. Web site: Holcodiscidae . Paleobiology Database . 30 December 2021 .
2. https://www.worldcat.org/oclc/61988855 Wright, C. W. with J.H. Callomon and M.K. Howarth (1996), Mollusca 4 Revised, Cretaceous Ammonoidea, vol. 4
3. Tzankov, V. & Breskovski, S. (1982), "Volume et contenu de la famille Holcodiscidae Spath, 1924," C.R. Acad. bulg. Sci., 35, 4, 491-93.