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Perisphinctidae is a family of Middle and Upper Jurassic discoidal ammonites in the order Ammonitida. They have a shell morphology that is mostly evolute, typically with biplicate, simple, or triplicate ribbing. Large forms have simple apertures and smooth body chambers while small forms have lappets and ribbed body chambers.

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  • Perisphinctidae es una familia de amonitas discoidales del Jurásico Medio y Superior en el orden Ammonitida. Tienen una morfología de caparazón que es en su mayoría evoluta, típicamente con nervaduras biplicadas, simples o triplicadas. Las formas grandes tienen aberturas simples y cámaras corporales lisas, mientras que las formas pequeñas tienen solapas y cámaras corporales estriadas.​ Las amonitas de Perisphinctidae​se derivaron de los ancestrales Stephanoceratidae en el Jurásico Medio Bajociense : las ammonites perisfinctidas variaron desde el Bajociense hasta el Tithoniano al final del Jurásico. Esta familia forma la raíz de Perisphinctoidea que dio lugar directa o indirectamente a las otras familias de perisfinctoides. El Tratado sobre Paleontología de Invertebrados (Parte L, 1957) incluye las subfamilias Leptosphinctinae, Zigzagiceratinae, Pseudoperisphincinae, Perisphinctinae, Aataxioceratinae, Aataxioceratinae, Aulocostephaninae, Virgostephanitinae, Dorsophaninae, Virgostephanitinae, Dorsophaninae, Virgostephanitinae, Dorsophaninae y Perisphinctinae.​ Donovan et al​ también reconoce las subfamilias , , y , pero omite las otras, agregando en su lugar e . Epipeltoceratinae se basa en , un género de Aspidoceratidae en el tratado, (subfamilia Peltoceratinae). Idoceratinae se basa en Idoceras, un género en, según el tratado, Ataxioceratinae polifilético. Donovan et al separan Aulocostephaninae, incluyendo Pictoniinae, como Aulocosphanidae. Las subfamilias Virgostephaninae, Dorsoplanitinae y Virgatitinae están por lo tanto separadas también como familias separadas todas del Jurásico Superior. (es)
  • Perisphinctidae is a family of Middle and Upper Jurassic discoidal ammonites in the order Ammonitida. They have a shell morphology that is mostly evolute, typically with biplicate, simple, or triplicate ribbing. Large forms have simple apertures and smooth body chambers while small forms have lappets and ribbed body chambers. The ammonites of Perisphinctidae were derived from the ancestral Stephanoceratidae in the Middle Jurassic Bajocian: perisphinctid ammonites ranged from the Bajocan until the Tithonian at the end of the Jurassic. This family forms the root stock of the Perisphinctoidea which gave rise directly or indirectly to the other perisphinctoid families. The Treatise on Invertebrate Paleontology (Part L, 1957) includes the subfamilies Leptosphinctinae, Zigzagiceratinae, Pseudoperisphincinae, Perisphinctinae, Aataxioceratinae, Pictoniinae, Aulocostephaninae, Virgostephaninae, Dorsoplanitinae, and Virgatitinae in the Perisphictidae. Donavan et al also recognizes the subfamilies , , , and but leaves out the others, adding instead the and . Epipeltoceratinae is based on , a genus in the Aspidoceratidae in the Treatise, (subfamily Peltoceratinae). The Idoceratinae is based on Idoceras, a genus in the, according to the Treatise, polyphyletic Ataxioceratinae. Donovan et al separates the Aulocostephaninae, including the Pictoniinae, as the Aulocosphanidae. The subfamilies Virgostephaninae, Dorsoplanitinae, and Virgatitinae are thereby separated also as separate families all from the Upper Jurassic. (en)
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  • Steinmann, 1890 (en)
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  • Orthosphinctes sp., from Montejunto , at the Museu Nacional de História Natural, Lisboa (en)
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  • See text (en)
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  • Subfamilies (en)
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  • Perisphinctidae (en)
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  • Perisphinctidae es una familia de amonitas discoidales del Jurásico Medio y Superior en el orden Ammonitida. Tienen una morfología de caparazón que es en su mayoría evoluta, típicamente con nervaduras biplicadas, simples o triplicadas. Las formas grandes tienen aberturas simples y cámaras corporales lisas, mientras que las formas pequeñas tienen solapas y cámaras corporales estriadas.​ (es)
  • Perisphinctidae is a family of Middle and Upper Jurassic discoidal ammonites in the order Ammonitida. They have a shell morphology that is mostly evolute, typically with biplicate, simple, or triplicate ribbing. Large forms have simple apertures and smooth body chambers while small forms have lappets and ribbed body chambers. (en)
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  • Perisphinctidae (en)
  • Perisphinctidae (es)
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