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From Wikipedia, the free encyclopedia

Strandoceras
Temporal range: M -U Ordovician
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Discosorida
Family: Cyrtogomphoceratidae
Genus: Strandoceras
Flower, 1940

Strandoceras is a strongly curved cyrtogomphoceratid with a laterally compressed cross section from the middle and upper Ordovician of Northern Europe; Estonia, Norway, the U.K.

The body chamber of Stradoceras is straighter and more slender than the chambered phragmocone; the venter narrowly rounded with a shallow hyponomic sinus; the aperture open, sutures with shallow lateral lobes. The siphuncle is close to the venter which is on the inside, endogastric curvature. Segments are large and broadly rounded; connecting rings thick, bullettes large.

Strandoceras gave rise to the Phragmoceratidae and very likely to Kiaeroceras and Cyrtogomphoceras, which in turn gave rise to Landeroceras, within the Cyrtogomphoceratidae

References

  • Flower, R H and Teichert, C; 1957. The Cephalopod Order Discosorida. University of Kansas Paleontological Contributions. Mollusca, Article 6, pp 1–144.
  • Teicher, C. 1964. Nautiloidea-Discosorida. Treatise on Invertebrate Paleontology, Part K. Teichert and Moore, eds.
This page was last edited on 18 July 2023, at 19:34
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