Spitidiscus
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Spitidiscus is a genus of ammonites placed in the family Holcodiscidae.[1][2]
Species
List of species within Spitidiscus:[3]
- Spitidiscus hugii[citation needed]
- Spitidiscus kilapiae Rawson and Aguirre-Urreta, 2012 - Argentina
- Spitidiscus oregonensis Imlay, 1960 - Oregon
- Spitidiscus riccardii Leanza, and Wiedmann, 1992 - Argentina
- Spitidiscus rotulia - England[citation needed]
- Spitidiscus simitiensis Haas, 1960 - Colombia
- Spitidiscus vandeckii (d'Orbigny, 1847)
Description
Member species have a rather evolute shell in which the whorl section is more or less circular, venter broadly rounded and dorsum fairly deeply impressed. Close, fine low, single or rarely branching ribs are interspersed by frequent straight or slightly sinuous, moderately deep but wide constrictions. The type species S. rotulia is from the Hauterivian of England.[citation needed]
Biostratigraphic significance
The first appearance of the species Spitidiscus hugii or Spitidiscus vandeckii are proposed to be the marker for the beginning of the Barremian.[4]
Distribution
Spitidiscus has been found in:[3]
- Agrio Formation, Argentina
- Magdalena Valley, Simití and Cáqueza, Colombia
- Kaliste Formation, Czech Republic
- France
- Gagra, Georgia, Caucasus
- Maiolica Formation, Italy
- Subbetics, Spain
- Foggy Creek, Oregon
- Bulgaria[citation needed]
- Portugal[citation needed]
- Russia[citation needed]
- Morocco[citation needed]
- Mexico[citation needed]
References
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- ^ Page Template:Smallcaps/styles.css has no content.Wright, C. W. with Page Template:Smallcaps/styles.css has no content.Callomon, J.H. and Page Template:Smallcaps/styles.css has no content.Howarth, M.K. (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, at 69.
- ^ Page Module:Citation/CS1/styles.css has no content."Spitidiscus". Sepkoski's Online Genus Database – Cephalopoda.
- ^ a b Page Module:Citation/CS1/styles.css has no content."Spitidiscus". Fossilworks.
- ^ Page Module:Citation/CS1/styles.css has no content."GSSP Table - Mesozoic Era". Geologic Time Scale Foundation. Retrieved 15 January 2014.
Bibliography
- Page Module:Citation/CS1/styles.css has no content."Spidiscus". Paleobiology Database. Retrieved 30 December 2021.
- Page Module:Citation/CS1/styles.css has no content."Spidiscus". Encyclopedia of Life (EOL). Retrieved 30 December 2021.
- Page Module:Citation/CS1/styles.css has no content.Wright, Claud William; with John Hannes Callomon and M.K. Howarth (1996). Roger L. Kaesler (ed.). Mollusca 4 Revised, Cretaceous Ammonoidea in Treatise on Invertebrate Paleontology Part L. Boulder, Colorado and Lawrence, Kansas: The Geological Society of America & University of Kansas Press. p. 69.
{{cite book}}: CS1 maint: multiple names: authors list (link) - Page Module:Citation/CS1/styles.css has no content.Arkell, W. J.; Furnish, W. M.; Kummel, Bernhard; Miller, A.K.; Moore, R.C.; Schindewolf, O.H. (1957). "Part L, Mollusca 4: Cephalopoda, Ammonoidea". In Raymond C. Moore (ed.). Treatise on Invertebrate Paleontology. Geological Society of America and University of Kansas Press. p. L371. ISBN 978-0-8137-3012-7 – via Internet Archive.
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