''Arctotirolites'' is an extinct genus of cephalopod belonging to the

ammonite Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...

subclass. It was described by

Popov Popov (; masculine), or Popova (; feminine), is a common Russian, Bulgarian, Macedonian and Serbian surname. Derived from a Slavonic word ''pop'' (, "priest"). The fourth most common Russian surname, it may refer to: * Alek Popov (born 1966) ...

in 1963, based on a single specimen found in the

Olenyok River The Olenyok (, sometimes spelled ''Оленек'', ''Olenek''; , Ölöön) is a major river in northern Siberian Russia, west of the lower Lena and east of the Anabar. It is long, of which around is navigable. Average water discharge is . The ...

basin, in the Olenikites zone of northern Siberia.

References

Ceratitida genera Xenodiscidae {{Ceratitida-stub