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- Gymnitidae abstract "Gymnitidae is a family of Lower to Middle Triassic ammonite cephalopods with evolute, discoidal shells. Hyatt and Smith (1905, p. 114-115) included the Gymnitidae in the suborder Ceratitoidea, which later became the superfamily Ceratitaceae and included in it genera more primitive than Gymnites as well as the more advanced Gymnites. Those being Xenaspis, Flemingites, and Ophiceras. Derivation as shown in Smith (1932 p. 30) is from Xenodiscus. The more primitive Xenaspis, Flemingites, and Ophiceras, found in Lower Triassic beds in western America have ceratitic sutures. The more developed Gymnites has deeply digitate ammonitic sutures. Arkell, et al., 1957, in the Treatise on Invertebrate Paleontology, on the other hand included the Gymnitidae in the Pinacocerataceae as the earlier and more primitive of its two families, combining Gymnites with coeval and more advanced forms. Genera included in the Gymnitidae sensu Arkell include Eogymnites, Buddhaites, Japanites, and of course, Gemnites. The genus Xiphogymnites was included by Tozer in 1981.Whether to place the Gymnitidae in the Ceratitaceae, as in Hyatt and Smith, combing Gymnites with its more primitive relatives, or in the Pinacocerataceae, as in Arkell et al., combing Gymnites with its coeval or more advanced relatives is a matter of perspective which does little to change the overall phylogeny.".
- Gymnitidae wikiPageID "33595942".
- Gymnitidae wikiPageRevisionID "547050714".
- Gymnitidae classis Cephalopod.
- Gymnitidae familia "†Gymnitidae".
- Gymnitidae familiaAuthority "Waagen, 1898".
- Gymnitidae hasPhotoCollection Gymnitidae.
- Gymnitidae ordo Ceratitida.
- Gymnitidae subclassis Ammonoidea.
- Gymnitidae subdivision "*See text".
- Gymnitidae subdivisionRanks "Genera".
- Gymnitidae superfamilia Pinacocerataceae.
- Gymnitidae subject Category:Ammonitida.
- Gymnitidae type Ammonite109195958.
- Gymnitidae type Ammonites.
- Gymnitidae type Fossil109284589.
- Gymnitidae type Object100002684.
- Gymnitidae type PhysicalEntity100001930.
- Gymnitidae type Remains109407346.
- Gymnitidae type Animal.
- Gymnitidae type Eukaryote.
- Gymnitidae type Species.
- Gymnitidae type Organism.
- Gymnitidae comment "Gymnitidae is a family of Lower to Middle Triassic ammonite cephalopods with evolute, discoidal shells. Hyatt and Smith (1905, p. 114-115) included the Gymnitidae in the suborder Ceratitoidea, which later became the superfamily Ceratitaceae and included in it genera more primitive than Gymnites as well as the more advanced Gymnites. Those being Xenaspis, Flemingites, and Ophiceras. Derivation as shown in Smith (1932 p. 30) is from Xenodiscus.".
- Gymnitidae label "Gymnitidae".
- Gymnitidae sameAs m.0hgm656.
- Gymnitidae sameAs Q5624496.
- Gymnitidae sameAs Q5624496.
- Gymnitidae sameAs Gymnitidae.
- Gymnitidae wasDerivedFrom Gymnitidae?oldid=547050714.
- Gymnitidae isPrimaryTopicOf Gymnitidae.