Definition of Orthoceratoids. Meaning of Orthoceratoids. Synonyms of Orthoceratoids

Here you will find one or more explanations in English for the word Orthoceratoids. Also in the bottom left of the page several parts of wikipedia pages related to the word Orthoceratoids and, of course, Orthoceratoids synonyms and on the right images related to the word Orthoceratoids.

Definition of Orthoceratoids

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Meaning of Orthoceratoids from wikipedia

- central to subcentral siphuncles which may bear internal deposits. Orthoceratoids are also characterized by dorsomyarian muscle scars (a small number...
- is prevalent among the ellesmerocerids, endocerids, actinocerids, orthoceratoids, and bactritids. Orthocones existed from the Late Cambrian to the Late...
- cephalopods has been a four-fold division (by Bather, 1888), into the orthoceratoids, nautiloids, ammonoids, and coleoids. This article is about nautiloids...
- 2008). "A New Genus of Middle Tremadocian Orthoceratoids and the Early Ordovician Origin of Orthoceratoid Cephalopods". Acta Palaeontologica Polonica...
- Endoceratoidea, Multiceratoidea, and Orthoceratoidea. The Ordovician-Tri****ic Orthoceratoids are ancestral to post-Paleozoic groups such as ammonoids (ammonites)...
- several plesiomorphic ("primitive") traits which are absent in other orthoceratoids: Cameral and endosiphuncular deposits are absent, and the siphuncle...
- Kroger, 2008. A new genus of middle Tremadocian orthoceratoids and the Early Ordovician origin of orthoceratoid cephalopods. Brief Report Acta Palaeontologica...
- Tienocerasis an orthoceratoid genus from the Permian of China (Hunan). Orthoceratoids are slender conical or near cylindrical, orthoconic, nautiloid cephalopods...
- (Furnish & Glenister, 1964), reranked as an order and combined with other orthoceratoids. They are considered to be more closely related to the Orthocerida than...
- Pseudorthocerida is an order of generally straight longiconic orthoceratoids with a subcentral to marginal cyrtochoanitic siphuncle composed of variably...