Biology:Diplomoceras

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Short description: Extinct genus of ammonites

Diplomoceras
Temporal range: Late Cretaceous, Campanian–Maastrichtian
Aristonectes2DB.jpg
Life restoration of Diplomoceras around Aristonectes
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Suborder: Ancyloceratina
Family: Diplomoceratidae
Genus: Diplomoceras
Hyatt, 1900
Species[1]
  • D. cascadense Anderson, 1958
  • D. cylindraceum (DeFrance, 1816)
  • D. jimboi Anderson, 1958
  • D. mercedense Anderson, 1958
  • D. mustangense Anderson, 1958
  • D. oshaughnessyi Anderson, 1958
  • D. vernaculare Anderson, 1958
Synonyms

Diplomoceras is a genus of ammonites included in the family Diplomoceratidae.[2] Fossils of species within this genus have been found in the Late Cretaceous sediments (age range: Campanian-Maastrichtian).[3][4] D. maximum had coiled shell length about 1.5 m (4.9 ft), uncoiled shell being 3 m (9.8 ft) to over 4 m (13 ft), with body chamber around 2 m (6.6 ft).[5][6][7] Some partial specimens may belong to shell with length around 1.7 m (5.6 ft).[8] Studies of Diplomoceras suggest that members of this genus could reach lifespans of over 200 years.[9]

References

  1. F. M. Anderson. (1958). Upper Cretaceous of the Pacific Coast. Geological Society of America Memoir 71:1-378
  2. Spath L. F. (1926). A Monograph of the Ammonoidea of the Gault; Part VI. Palaeontographical Society London
  3. Docho Dochev, Lubomir Metodiev (December 2016). "New record of Diplomoceras cylindraceum (Defrance, 1816) from the Maastrichtian of the Western Fore-Balkan (Bulgaria)". Geologica Balcanica 45: 33–45. doi:10.52321/GeolBalc.45.0.33. https://www.researchgate.net/publication/318745371. 
  4. Paleobiology database
  5. Zinsmeister, WJ; Oleinik, AE (1995). "Discovery of a remarkably complete specimen of the giant cephalopod Diplomoceras maximum from the Late Cretaceous of Seymour Island, Antarctica". Antarctic Journal of the United States. https://books.google.com/books?id=FoGOBfIlMh4C. 
  6. Syracuse University; Artruc, Emily G.; Ivany, Linda C. (2016). GROWTH RATE AND ECOLOGY OF THE GIANT HETEROMORPH AMMONITE DIPLOMOCERAS MAXIMUM USING STABLE ISOTOPES OF ACCRETIONARY SHELL CARBONATE. doi:10.1130/abs/2016NE-272500. https://gsa.confex.com/gsa/2016NE/webprogram/Paper272500.html. 
  7. "Giant Heteromorph Ammonite". 2023-07-25. https://www.museumoftheearth.org/exhibit/heteromorph-ammonite. 
  8. Masukawa, Genya; Ando, Hisao (2018-11-01). "Late Campanian–early Maastrichtian heteromorph-dominated ammonoid assemblages of the Nakaminato Group, central Honshu, Japan: biostratigraphic and paleontological implications" (in en). Cretaceous Research 91: 362–381. doi:10.1016/j.cretres.2018.06.018. ISSN 0195-6671. https://www.sciencedirect.com/science/article/pii/S019566711830079X. 
  9. Sullivan, Rory (4 November 2020). "Large squid-like creature that looked like a giant paperclip lived for 200 years — 68 million years ago". The Independent. https://www.independent.co.uk/news/long_reads/science-and-technology/ancient-squid-paperclip-shell-200-year-life-b1591785.html. 

Wikidata ☰ Q23840177 entry