Holcodiscidae

{{Short description|Extinct family of ammonites}} {{Automatic taxobox | fossil_range = {{Fossilrange|140.2|84.9|Cretaceous}} | image = Holcodiscidae - Spitidiscus species.JPG | image_caption = ''Spitidiscus'' species from Alpes-de-Haute-Provence | taxon = Holcodiscidae | authority = Spath, 1923 | synonyms_ref = | synonyms = *Astieridiscidae Tzankov & Breskovski, 1982; *Metahoplidae Tzankov & Breskovski, 1982 }}

'''Holcodiscidae''' is an ammonite family placed in the superfamily Desmoceratoidea.<ref name=fa>{{cite web |title = Holcodiscidae |publisher= Paleobiology Database |accessdate= 30 December 2021 |url= https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=131208}}</ref><ref name=wright>[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], in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler et al. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p. 48.</ref>

==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.<ref name=wright/><ref name=Tzankov>Tzankov, V. & Breskovski, S. (1982), "Volume et contenu de la famille Holcodiscidae Spath, 1924," ''C.R. Acad. bulg. Sci.'', 35, 4, 491-93.</ref>

==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.<ref name=fa/><ref name=wright/>

==References== {{Reflist}}

== External links== * {{cite web |title=Holcodiscidae |publisher= mindat.org |url=https://www.mindat.org/taxon-4627550.html |accessdate= 30 December 2021}} *{{cite web |title= Holcodiscidae |publisher= Encyclopedia of Life (EOL) |url= https://eol.org/pages/52573499 |accessdate= 30 December 2021}} * {{cite book |last= Wright C.W. with J.H. Callomon and M.K. Howarth |year= 1996 |chapter= Mollusca 4 Revised: Cretaceous Ammonoidea |volume = 4 |title= Treatise on Invertebrate Paleontology Part L |editor = Roger L. Kaesler |place= Boulder, Colorado and Lawrence, Kansas |publisher= The Geological Society of America & University of Kansas Press |url= https://archive.org/details/treatiseoninvert0000join/page/n3/mode/2up?view=theater |url-access= registration |page = [https://archive.org/details/treatiseoninvert0000join/page/48/mode/2up?view=theater 48] |via= Internet Archive}} * {{cite book |author1= Arkell, W. J. |author2= Furnish, W. M. |author3= Kummel, Bernhard |author4= Miller, A.K. |author5= Moore, R.C. |author6= Schindewolf, O.H. |year= 1957 |chapter= Part L, Mollusca 4: Cephalopoda, Ammonoidea |title= Treatise on Invertebrate Paleontology |publisher= Geological Society of America and University of Kansas Press |editor= Raymond C. Moore |editor-link= Raymond Cecil Moore |url= https://archive.org/details/treatiseoninvert0000unse_n4o3/page/n3/mode/2up?view=theater |url-access= registration |page= [https://archive.org/details/treatiseoninvert0000unse_n4o3/page/370/mode/2up?view=theater L371] |via= Internet Archive}}

Category:Cretaceous ammonites Category:Early Cretaceous first appearances Category:Santonian extinctions Category:Ammonitida families Category:Desmoceratoidea