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Perisphinctoidea

Perisphinctoidea, formerly Perisphinctaceae, is a superfamily of Middle Jurassic (Bajocian) to Lower Cretaceous (Barremian) ammonites, commonly with evolute shells with strong ribbing that typically divides about mid flank before crossing the venter.[1]

Perisphinctoidea
Temporal range: Bajocian–Barremian
Idoceras balderum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Suborder: Ammonitina
Superfamily: Perisphinctoidea
Steinmann, 1890
Families

See text

Synonyms
  • Perisphinctaceae

Classification

Some 16 families have been recognized in the Perisphinctoidea. The following is based on Donovan et al. 1981[2] with modification from the Treatise on Invertebrate Paleontology, Part L (1957)[1]

(Middle Jurassic direct derivatives of the Perisphinctidae)

(early Upper Jurassic (Oxfordian) derivatives of Perisphinctidae)

(mid Upper Jurassic (Kimmeridgian) derivatives of the Ataxioceratidae)

  • Dorsoplanitidae
  • Virgatitidae

(late Upper Jurassic (Tithonian) derivatives of Perisphinctidae)

(Lower Cretaceous Perisphinctoidea (Berriasan - Hauterivien)

  • Berriasellidae (derived from Ataxioceratidae)(now considered a subfamily of Neocomitidae)
  • Polytichitidae [=Craspeditidae] (derived from Dorsoplanitidae)
  • Neocomitidae (derived from Berriasellidae)(now placed in the superfamily Endemoceratoidea)
  • Oosterellidae (Hauterivian derivative of the Neocomitidae)

References

  1. ^ a b Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
  2. ^ Donovan, Callomon and Howarth 1981 Classification of the Jurassic Ammonitina; Systematics Association. (PDF). Archived from the original (PDF) on 2011-07-16. Retrieved 2010-11-20.{{cite web}}: CS1 maint: archived copy as title (link)


perisphinctoidea, formerly, perisphinctaceae, superfamily, middle, jurassic, bajocian, lower, cretaceous, barremian, ammonites, commonly, with, evolute, shells, with, strong, ribbing, that, typically, divides, about, flank, before, crossing, venter, temporal, . Perisphinctoidea formerly Perisphinctaceae is a superfamily of Middle Jurassic Bajocian to Lower Cretaceous Barremian ammonites commonly with evolute shells with strong ribbing that typically divides about mid flank before crossing the venter 1 PerisphinctoideaTemporal range Bajocian Barremian PreꞒ Ꞓ O S D C P T J K Pg NIdoceras balderumScientific classificationKingdom AnimaliaPhylum MolluscaClass CephalopodaSubclass AmmonoideaOrder AmmonitidaSuborder AmmonitinaSuperfamily PerisphinctoideaSteinmann 1890FamiliesSee textSynonymsPerisphinctaceaeClassification EditSome 16 families have been recognized in the Perisphinctoidea The following is based on Donovan et al 1981 2 with modification from the Treatise on Invertebrate Paleontology Part L 1957 1 Perisphinctidae Middle and Upper Jurassic root stock derived from the Stephanoceratidae Middle Jurassic direct derivatives of the Perisphinctidae Morphiceratidae Tulitidae Reineckeiidae Pachyceratidae Aspidoceratidae early Upper Jurassic Oxfordian derivatives of Perisphinctidae Aulacostephanidae Ataxioceratidae mid Upper Jurassic Kimmeridgian derivatives of the Ataxioceratidae Dorsoplanitidae Virgatitidae late Upper Jurassic Tithonian derivatives of Perisphinctidae Simoceratidae Himalayitidae Olcostephanidae Holcodiscidae indirect from Olcostaphanidae now placed in the suberfamily Desmoceratoidea Lower Cretaceous Perisphinctoidea Berriasan Hauterivien Berriasellidae derived from Ataxioceratidae now considered a subfamily of Neocomitidae Polytichitidae Craspeditidae derived from Dorsoplanitidae Neocomitidae derived from Berriasellidae now placed in the superfamily Endemoceratoidea Oosterellidae Hauterivian derivative of the Neocomitidae References Edit a b Arkell W J Kummel B Wright C W 1957 Mesozoic Ammonoidea Treatise on Invertebrate Paleontology Part L Mollusca 4 Lawrence Kansas Geological Society of America and University of Kansas Press Donovan Callomon and Howarth 1981 Classification of the Jurassic Ammonitina Systematics Association Archived copy PDF Archived from the original PDF on 2011 07 16 Retrieved 2010 11 20 a href Template Cite web html title Template Cite web cite web a CS1 maint archived copy as title link Wikispecies has information related to Perisphinctoidea Paleontology portal This Ammonitina related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Perisphinctoidea amp oldid 1045268920, wikipedia, wiki, book, books, library,

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