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- Ophidioceras abstract "Ophidioceras is an alternate name for the Tarphycerid genus Ophioceras, which is known from the Upper Silurian of Europe and North America.Ophioceras, as this genus is more properly known, has a narrow, evolutly wound, closely coiled shell that diverges in the adult stage. The shell is more or less circular in cross section, strongly annulate with close spaced, rounded, transverse ribs. The venter is bicarinate, with keels along either side separated by a flattened surface. The siphuncle is tubular and thin walled, and may be slightely ventral or dorsal of the center. The adult aperture has deep hypononic and occular sinuses, not too dissimilar from the Ordovican Lituites, to which this genus is possibly allied. Some 12 species have been described which have been reduced to two, Ophioceras rudens Barrande, 1865 and O. simplex Barrande, 1865 with two subspecies, O. simplex simplex and O. s. proximum. Minor evolutionary changes can be observed within both species, which In spite of their widespread distribution do not demonstrate any major geographical variations.".
- Ophidioceras class Cephalopod.
- Ophidioceras class Nautiloid.
- Ophidioceras family Ophidioceratidae.
- Ophidioceras kingdom Animal.
- Ophidioceras order Tarphycerida.
- Ophidioceras phylum Mollusca.
- Ophidioceras wikiPageID "24011334".
- Ophidioceras wikiPageRevisionID "495478006".
- Ophidioceras classis Cephalopod.
- Ophidioceras familia Ophidioceratidae.
- Ophidioceras fossilRange "U Silurian".
- Ophidioceras genus "Ophidioceras".
- Ophidioceras genusAuthority "Barrande, 1867".
- Ophidioceras hasPhotoCollection Ophidioceras.
- Ophidioceras name "Ophidioceras".
- Ophidioceras ordo Tarphycerida.
- Ophidioceras phylum Mollusca.
- Ophidioceras regnum Animal.
- Ophidioceras subclassis Nautiloid.
- Ophidioceras subject Category:Cephalopods.
- Ophidioceras subject Category:Prehistoric_animals_of_Europe.
- Ophidioceras subject Category:Silurian_animals.
- Ophidioceras subject Category:Silurian_extinctions.
- Ophidioceras type Animal100015388.
- Ophidioceras type Cephalopod101968315.
- Ophidioceras type Cephalopods.
- Ophidioceras type Invertebrate101905661.
- Ophidioceras type LivingThing100004258.
- Ophidioceras type Mollusk101940736.
- Ophidioceras type Object100002684.
- Ophidioceras type Organism100004475.
- Ophidioceras type PhysicalEntity100001930.
- Ophidioceras type PrehistoricAnimalsOfEurope.
- Ophidioceras type SilurianAnimals.
- Ophidioceras type Whole100003553.
- Ophidioceras type Animal.
- Ophidioceras type Eukaryote.
- Ophidioceras type Mollusca.
- Ophidioceras type Species.
- Ophidioceras type Mollusk.
- Ophidioceras type Organism.
- Ophidioceras comment "Ophidioceras is an alternate name for the Tarphycerid genus Ophioceras, which is known from the Upper Silurian of Europe and North America.Ophioceras, as this genus is more properly known, has a narrow, evolutly wound, closely coiled shell that diverges in the adult stage. The shell is more or less circular in cross section, strongly annulate with close spaced, rounded, transverse ribs. The venter is bicarinate, with keels along either side separated by a flattened surface.".
- Ophidioceras label "Ophidioceras".
- Ophidioceras sameAs m.07kb24x.
- Ophidioceras sameAs Q7097917.
- Ophidioceras sameAs Q7097917.
- Ophidioceras sameAs Ophidioceras.
- Ophidioceras wasDerivedFrom Ophidioceras?oldid=495478006.
- Ophidioceras isPrimaryTopicOf Ophidioceras.
- Ophidioceras name "Ophidioceras".