Jump to content

Styrionautilus

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Tom.Bot (talk | contribs) at 05:28, 21 March 2018 (Task 3: +{{Taxonbar|from=Q22285938}} (1 sig. taxon ID); WP:GenFixe using AWB). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Styrionautilus
Temporal range: Middle-Late Triassic (Nor)
Scientific classification
Kingdom:
Phylum:
Class:
Order:
Family:
Genus:
Styrionautilus

Mojsisovics, 1902

Styrionautilus is a genus of nautiloids and first of the Clydonautilidae with a range extending from the Middle Triassic, Anisian to the Upper Triassic, Norian. Its fossils found in North America (Nevada), Europe, and Timor.

In general form Styrionautilus is similar to other clydonautilids, smooth and involute. The suture however is more primitive. The ventral saddle is straight across without modification of a median lobe.

Styrionautilus may be derived from Indionautilus or similar form included in the Liroceratidae. In turn Styrionautilus is the likely ancestor of Proclydonautilus, Cosmonautilus, and/or Callaionautilus

References