Aulatornoceras Explained

Aulatornoceras is a genus belonging to the subfamily Aulatornoceratinae, a member of the Goniatitida, an extinct order of shelled cephalopods included in the Ammonoidea.^[1] Aulatornoceras, which has been considered a subgenus of Tornoceras has ventro-lateral grooves. As with Tornoceras, the suture forms six lobes. The shell itself is involute.^[2]

Notes and References

1. http://paleodb.org/cgi-bin/bridge.pl?a=checkTaxonInfo&taxon_no=13633&is_real_user=1 Aulatornoceras entry at The Paleobiology Database
2. Book: W.J. . Arkell . B. . Kummel . C.W. . Wright . Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Mesozoic Ammonoidea . Geological Society of America and University of Kansas Press . Lawrence, Kansas. 1957.