Biology:Anasibirites

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Short description: Genus of molluscs (fossil)


Anasibirites
Temporal range: Olenekian
Fossil
Scientific classification
Kingdom:
Phylum:
Class:
Subclass:
Superfamily:
Meekocerataceae
Family:
Prionitidae
Genus:
Anasibirites

Mojsisovics, 1896
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

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

Wikidata ☰ Q4751796 entry