Jump to content

Karoceratidae

Add links
From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Akrasia25 (talk | contribs) at 17:51, 13 June 2019 (link Early Silurian using Find link). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Karoceratidae
Temporal range: Early Silurian - ?Early Devonian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: †Oncocerida
Family: †Karoceratidae
Teichert, 1939

Karoceratidae is a family of nautiloids within the order Oncocerida, characterized by straight or curved, laterally narrow, shells and slender, ventral siphuncles that are empty except in Karoceras. Siphuncle segments are inflated ventrally but straight dorsally. Septal necks are cyrtochoanitic, outwardly curved; connecting rings are thin.

Genera include Karoceras, Osbornoceras, and possibly Shuranoceras, which have been found in sediments ranging from the Lower Silurian to possibly as young as the Lower Devonian.

References

  • Walter C. Sweet, 1964. Nautiloidea - Oncocerida; Treatise on Invertebrate Paleontology, Part K. Geological Society of America and University of Kansas Press.


Stub icon

This prehistoric nautiloid-related article is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Karoceratidae&oldid=901700405"