About: Xenodiscidae

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The Xenodiscidae are the earliest of the Ceratitida and comprise Middle and Upper Permian genera characterized by compressed, discoidal, evolute shells with rounded to acute venters and commonly with lateral ribs. Sutures are goniatitic to weakly ceratitic. The Xenodiscidae, which are part of the superfamily Xenodiscoidea, are derived from the Daraelitidae, a family in the Prolecanitida (ibid). In turn, the Xenodiscidae provided the root stock for the subsequent expansion and diversification of the Ceratitida in the Triassic.

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  • The Xenodiscidae are the earliest of the Ceratitida and comprise Middle and Upper Permian genera characterized by compressed, discoidal, evolute shells with rounded to acute venters and commonly with lateral ribs. Sutures are goniatitic to weakly ceratitic. The Xenodiscidae, which are part of the superfamily Xenodiscoidea, are derived from the Daraelitidae, a family in the Prolecanitida (ibid). In turn, the Xenodiscidae provided the root stock for the subsequent expansion and diversification of the Ceratitida in the Triassic. (en)
  • 外盘菊石科（学名：Xenodiscidae）为的一个科。此科的模式属为外盘菊石属(Xenodiscus)。 (zh)
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  • 13423021 (xsd:integer)
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  • 1866 (xsd:nonNegativeInteger)
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  • 1089509636 (xsd:integer)
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  • Frech, 1902 (en)
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  • M-U Permian (en)
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  • Xenodiscus besairiei on display at the Museo Civico di Storia Naturale di Milano (en)
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  • * Aldanoceras * Arctotirolites * Glyptophiceras * Hanielites * Hemilecanites * Hypophiceras * Iranites * Kaibinoceras * Kelteroceras * Metophiceras * Penglaites * Phisonites * Pseudoceltites * Shevyrevites * Sutchanites * Tompophiceras * Tozericeras * Xenodiscus (en)
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  • Genera (en)
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  • Xenodiscidae (en)
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  • The Xenodiscidae are the earliest of the Ceratitida and comprise Middle and Upper Permian genera characterized by compressed, discoidal, evolute shells with rounded to acute venters and commonly with lateral ribs. Sutures are goniatitic to weakly ceratitic. The Xenodiscidae, which are part of the superfamily Xenodiscoidea, are derived from the Daraelitidae, a family in the Prolecanitida (ibid). In turn, the Xenodiscidae provided the root stock for the subsequent expansion and diversification of the Ceratitida in the Triassic. (en)
  • 外盘菊石科（学名：Xenodiscidae）为的一个科。此科的模式属为外盘菊石属(Xenodiscus)。 (zh)
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  • Xenodiscidae (en)
  • 外盘菊石科 (zh)
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