Holcodiscus is an extinct ammonite genus placed in the family Holcodiscidae. Species in this genus were fast-moving nektonic carnivores.[2] The type species of the genus is Ammonites caillaudianus.[2]
Circular to rectangular whorl section; fine, low, straight or flexuous simple or branched ribs, periodically truncated by thin, high, enlarged ribs bearing lateral and ventrolateral tubercles; inner whorls tending to have depressed whorl section and to resemble Olcostephanus.[3]
Fossils of species within this genus have been found in the Cretaceous sediments of Austria, Bulgaria, Chile, Colombia, Czech Republic, Slovakia, France, Italy, Morocco, Spain and Russia.[2]
Notes
^"Holcodiscus". Sepkoski's Online Genus Database – Cephalopoda.
^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.
References
Arkell, W.J. et al., (1957). Mesozoic Ammonoidea Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geological Society of America and Univ Kansas Press.
holcodiscus, extinct, ammonite, genus, placed, family, holcodiscidae, species, this, genus, were, fast, moving, nektonic, carnivores, type, species, genus, ammonites, caillaudianus, temporal, range, cretaceous, preꞒ, nfossil, shell, fallax, from, alpes, haute,. Holcodiscus is an extinct ammonite genus placed in the family Holcodiscidae Species in this genus were fast moving nektonic carnivores 2 The type species of the genus is Ammonites caillaudianus 2 HolcodiscusTemporal range Cretaceous 1 2 130 0 84 9 Ma PreꞒ Ꞓ O S D C P T J K Pg NFossil shell of Holcodiscus fallax from Alpes de Haute Provence on display at Galerie de paleontologie et d anatomie comparee in ParisScientific classificationKingdom AnimaliaPhylum MolluscaClass CephalopodaSubclass AmmonoideaOrder AmmonitidaFamily HolcodiscidaeGenus HolcodiscusUhlig 1882 Contents 1 Description 2 Species 2 3 Distribution 4 Notes 5 References 6 External linksDescription EditCircular to rectangular whorl section fine low straight or flexuous simple or branched ribs periodically truncated by thin high enlarged ribs bearing lateral and ventrolateral tubercles inner whorls tending to have depressed whorl section and to resemble Olcostephanus 3 Species 2 EditHolcodiscus caillaudianus d Orbigny 1850 Holcodiscus camelinus d Orbigny 1850 Holcodiscus hauthali Paulcke 1907 Holcodiscus tenuistriatus Paulcke 1907Distribution EditFossils of species within this genus have been found in the Cretaceous sediments of Austria Bulgaria Chile Colombia Czech Republic Slovakia France Italy Morocco Spain and Russia 2 Notes Edit Holcodiscus Sepkoski s Online Genus Database Cephalopoda a b c d e Holcodiscus 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 amp Lawrence Kansas University of Kansas Press p 48 References EditArkell W J et al 1957 Mesozoic Ammonoidea Treatise on Invertebrate Paleontology Part L Ammonoidea Geological Society of America and Univ Kansas Press Holcodiscus mediocostatus Tzankov 1935 Barremian Razgrad Cr1 1716 Coll V Tzankov at the Sofia University St Kliment Ohridski Museum of Paleontology and Historical GeologyExternal links EditHolcodiscus at Wikipedia s sister projects Definitions from Wiktionary Media from Commons News from Wikinews Quotations from Wikiquote Texts from Wikisource Textbooks from Wikibooks Resources from Wikiversity Holcodiscus mindat org Retrieved 30 December 2021 Holcodiscus Encyclopedia of Life EOL Retrieved 30 December 2021 This Ammonitina related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Holcodiscus amp oldid 1113854079, wikipedia, wiki, book, books, library,
