To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

From Wikipedia, the free encyclopedia

Eburoceras
Temporal range: Late Cambrian, Trempealeauan
Scientific classification
Kingdom:
Class:
Subclass:
Order:
Family:
Genus:
Eburoceras

Chen & Teichert, 1983

Eburoceras is an early nautiloid cephalopod from the Upper Yenchau and Wanwankau, Upper Cambrian Trempealeauan of China, assigned to the Ellesmeroceratidae.

The shell of Eburoceras is long and narrow, curved in a broad arc of near constant curvature, interpreted as endogastric, assuming the small siphuncle on the inner margin to be ventral. Known for sure dorsal siphuncles do not appear until later in the Early Ordovician with the Trocholitidae, which if so would make it (Eburoceras) exogastric. Eburoceras is the most strongly curved of the Cambrian ellesmeroceratids.

Eburoceras is the earliest ellesmeroceratid except for the short lived Hunyuanocers, from the lower part of the Upper Yenchou, that proceeded it. Eburoceras died out at the end of Wanwankau time, along with the other Late Cambrian ellesmeroceratid genera, except for Ectenolites and Clarkoceras, which persisted into the Ordovician.

Late Cambrian Tanycamerocers (Ellesmeroceratidae) is similar in being long and narrow and having a small marginal siphuncle, but is straight. Late Cambrian Huaiheceras (Hauiheceratidae) is also similar in being long with a small marginal siphuncle, but is exogastric and less strongly curved.

References

  • Chen Jun-yuan & Curt Teichert. Cambrian Cephalopods. Geology v.11 Nov. 1983
  • Curt Teichert. Main features of Cephalopod Evolution. the Mollusca Volume 12. Paleontology and Neontology of Cephalopods. Academic Press Inc. 1988.
This page was last edited on 28 March 2020, at 16:06
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.