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- Rayonnoceras abstract "Rayonnoceras is an extinct cephalopod genus that lived around 325 million years ago during the Carboniferous which although resembling earlier actinocerids is now though to belong to the Pseudorthocerida Rayonnoceras is characterized by large to very large straight shells with a large subcentral siphuncle composed of subglobular segments, as for the family. The endosiphuncular canal system is well devoloped and most chambers are filled with organic deposits. Some shells have transverse striae, others are smooth. As with earlier actinocerids. Rayonnoceras too has a canal system within the siphuncle that includes a narrow opening between the internal deposits and inner wall of the connecting ring known as a parispatium. but differs from the earlier actinocerids in having a bullet-like apex with a cicatrix and a long first chamber, characteristic of pseuorthocerids, rather than a blunt apex and short first chamber characteristic of true actinocerids.Recently, an eight-foot-long specimen of Rayonnoceras solidiforme was found in Arkansas, believed to be the largest of its kind ever found, is now housed at the University of Arkansas Museum.Orientation during life was horizontal. Cameral deposits, more concentrated in the apical part of the shell, are thought to have acted as ballast compensating for the weight of the animal in the forward part. In life Rayonnoceras was probably a bottom dweller that spent most of its time stationary, waiting in ambush for prey.Rayonnoceras was among the last of the actinocerid-mimics, which finally died out in the Carboniferous.".
- Rayonnoceras class Cephalopod.
- Rayonnoceras class Nautiloid.
- Rayonnoceras family Carbactinoceratidae.
- Rayonnoceras kingdom Animal.
- Rayonnoceras order Pseudorthocerida.
- Rayonnoceras phylum Mollusca.
- Rayonnoceras wikiPageExternalLink 030127075642.htm.
- Rayonnoceras wikiPageID "1252829".
- Rayonnoceras wikiPageRevisionID "584236447".
- Rayonnoceras classis "Cephalopoda".
- Rayonnoceras familia Carbactinoceratidae.
- Rayonnoceras genus "Rayonnoceras".
- Rayonnoceras genusAuthority "Croneis, 1926".
- Rayonnoceras hasPhotoCollection Rayonnoceras.
- Rayonnoceras name "Rayonnoceras".
- Rayonnoceras ordo Pseudorthocerida.
- Rayonnoceras phylum Mollusca.
- Rayonnoceras regnum "Animalia".
- Rayonnoceras subclassis Nautiloid.
- Rayonnoceras subdivision "*see text".
- Rayonnoceras subdivisionRanks "Species".
- Rayonnoceras subject Category:Carboniferous_animals.
- Rayonnoceras subject Category:Devonian_animals.
- Rayonnoceras subject Category:Nautiloids.
- Rayonnoceras subject Category:Ordovician_animals.
- Rayonnoceras subject Category:Prehistoric_animals_of_North_America.
- Rayonnoceras subject Category:Silurian_animals.
- Rayonnoceras type Animal100015388.
- Rayonnoceras type CarboniferousAnimals.
- Rayonnoceras type DevonianAnimals.
- Rayonnoceras type LivingThing100004258.
- Rayonnoceras type Object100002684.
- Rayonnoceras type OrdovicianAnimals.
- Rayonnoceras type Organism100004475.
- Rayonnoceras type PhysicalEntity100001930.
- Rayonnoceras type PrehistoricAnimalsOfNorthAmerica.
- Rayonnoceras type SilurianAnimals.
- Rayonnoceras type Whole100003553.
- Rayonnoceras type Animal.
- Rayonnoceras type Eukaryote.
- Rayonnoceras type Mollusca.
- Rayonnoceras type Species.
- Rayonnoceras type Mollusk.
- Rayonnoceras type Organism.
- Rayonnoceras comment "Rayonnoceras is an extinct cephalopod genus that lived around 325 million years ago during the Carboniferous which although resembling earlier actinocerids is now though to belong to the Pseudorthocerida Rayonnoceras is characterized by large to very large straight shells with a large subcentral siphuncle composed of subglobular segments, as for the family. The endosiphuncular canal system is well devoloped and most chambers are filled with organic deposits.".
- Rayonnoceras label "Rayonnoceras".
- Rayonnoceras label "Rayonnoceras".
- Rayonnoceras sameAs Rayonnoceras.
- Rayonnoceras sameAs m.04mckh.
- Rayonnoceras sameAs Q3866731.
- Rayonnoceras sameAs Q3866731.
- Rayonnoceras sameAs Rayonnoceras.
- Rayonnoceras wasDerivedFrom Rayonnoceras?oldid=584236447.
- Rayonnoceras isPrimaryTopicOf Rayonnoceras.
- Rayonnoceras name "Rayonnoceras".