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- Tarphycerida abstract "The Tarphycerida were the first of the coiled cephalopods. They are found in marine sediments from the Lower Ordovician (middle and upper Canad) to the Middle Devonian. Some like Aphetoceras and Estonioceras are loosely coiled, gyroconic, others like Campbelloceras, Tarphyceras, and Trocholites are tightly coiled, but evolute with all whorls showing. The body chamber of tarphycerids is typically long and tubular (Furnish and Glenister 1964), as much as half the length of the containing whorl in most, greater than in the Silurian Ophidioceratidae. The Tarphycerida evolved from the elongate, compressed, exogastric Bassleroceratidae, probably Bassleroceras, around the end of the Gasconadian through forms like Aphetoceras. Close coiling developed rather quickly and both gyroconic and evolute forms are found in the early middle Canadian. Tarphycerids tend to uncoil in the late mature stage of their growth, indicating they settled into a benthic lifestyle as they became older. Younger, wholly coiled forms were probably more active, nekto-benthic, certainly more maneuverable".
- Tarphycerida class Cephalopod.
- Tarphycerida class Nautiloid.
- Tarphycerida kingdom Animal.
- Tarphycerida phylum Mollusca.
- Tarphycerida wikiPageID "18409970".
- Tarphycerida wikiPageRevisionID "543405948".
- Tarphycerida classis Cephalopod.
- Tarphycerida hasPhotoCollection Tarphycerida.
- Tarphycerida ordo "Tarphycerida".
- Tarphycerida ordoAuthority "Flower, 1950".
- Tarphycerida phylum Mollusca.
- Tarphycerida regnum Animal.
- Tarphycerida subclassis Nautiloid.
- Tarphycerida subject Category:Cephalopods.
- Tarphycerida type Animal100015388.
- Tarphycerida type Cephalopod101968315.
- Tarphycerida type Cephalopods.
- Tarphycerida type Invertebrate101905661.
- Tarphycerida type LivingThing100004258.
- Tarphycerida type Mollusk101940736.
- Tarphycerida type Object100002684.
- Tarphycerida type Organism100004475.
- Tarphycerida type PhysicalEntity100001930.
- Tarphycerida type Whole100003553.
- Tarphycerida type Animal.
- Tarphycerida type Eukaryote.
- Tarphycerida type Mollusca.
- Tarphycerida type Species.
- Tarphycerida type Mollusk.
- Tarphycerida type Organism.
- Tarphycerida comment "The Tarphycerida were the first of the coiled cephalopods. They are found in marine sediments from the Lower Ordovician (middle and upper Canad) to the Middle Devonian. Some like Aphetoceras and Estonioceras are loosely coiled, gyroconic, others like Campbelloceras, Tarphyceras, and Trocholites are tightly coiled, but evolute with all whorls showing.".
- Tarphycerida label "Tarphycerida".
- Tarphycerida label "Tarphycerida".
- Tarphycerida sameAs Tarphycerida.
- Tarphycerida sameAs m.04f0pxm.
- Tarphycerida sameAs Q3981158.
- Tarphycerida sameAs Q3981158.
- Tarphycerida sameAs Tarphycerida.
- Tarphycerida wasDerivedFrom Tarphycerida?oldid=543405948.
- Tarphycerida isPrimaryTopicOf Tarphycerida.