Anasibirites

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Anasibirites
Temporal range: Olenekian
Fossil
Scientific classification
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Anasibirites

Species
  • A. kingianus (Waagen, 1895)
  • A. multiformis Welter, 1922

Anasibirites is an extinct genus of ammonoid cephalopod from the lower upper Smithian Wasatchites distractus Zone (Olenekian, Lower Triassic).[1]

Distribution and diversity[edit]

Anasibirites is characterized by a cosmopolitan distribution, which is unusual for Smithian aged ammonoids and probably a consequence of the Smithian-Spathian boundary extinction. Although about 60 species were erected, only two are valid, A. kingianus (Waagen, 1895) and A. multiformis Welter, 1922.[1][2][3]

References[edit]

  1. ^ a b Jattiot, Romain; Bucher, Hugo; Brayard, Arnaud; Monnet, Claude; Jenks, James F.; Hautmann, Michael (2016). "Revision of the genus Anasibirites Mojsisovics (Ammonoidea): An iconic and cosmopolitan taxon of the late Smithian (Early Triassic) extinction". Papers in Palaeontology. 2 (1): 155–188. Bibcode:2016PPal....2..155J. doi:10.1002/spp2.1036. hdl:20.500.12210/34589. S2CID 85908694.
  2. ^ "Fossilworks: Anasibirites multiformis". fossilworks.org. Retrieved 17 December 2021.
  3. ^ "Fossilworks: Anasibirites simanenkoi". fossilworks.org. Retrieved 17 December 2021.