Pachyceras is a genus of perisphinctoid ammonites from the Middle Jurassic, upper Callovian stage, and is the type genus for the family Pachyceratidae. The shell is involute, subglobular, with a deep umbilicus and flattened flanks that slope toward a more narrowly rounded venter, and covered by low, widely spaced ribs.
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| - Pachyceras (es)
- Pachyceras (en)
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| - Pachyceras es un género de ammonites perisfinctoides del Jurásico Medio, etapa del Calloviano superior, es el género tipo de la familia Pachyceratidae. La concha es involuta, subglobular, con un ombligo profundo y flancos aplanados que se inclinan hacia una ventosa redondeada más estrecha, y está cubierta por costillas bajas y muy espaciadas. (es)
- Pachyceras is a genus of perisphinctoid ammonites from the Middle Jurassic, upper Callovian stage, and is the type genus for the family Pachyceratidae. The shell is involute, subglobular, with a deep umbilicus and flattened flanks that slope toward a more narrowly rounded venter, and covered by low, widely spaced ribs. (en)
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| - Fossil of Pachyceras lalandeanum from Calvados , on display at Galerie de paléontologie et d'anatomie comparée in Paris (en)
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| - * Pachyceras schloenbachi (Roman, 1930) (en)
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| - Pachyceras es un género de ammonites perisfinctoides del Jurásico Medio, etapa del Calloviano superior, es el género tipo de la familia Pachyceratidae. La concha es involuta, subglobular, con un ombligo profundo y flancos aplanados que se inclinan hacia una ventosa redondeada más estrecha, y está cubierta por costillas bajas y muy espaciadas. (es)
- Pachyceras is a genus of perisphinctoid ammonites from the Middle Jurassic, upper Callovian stage, and is the type genus for the family Pachyceratidae. The shell is involute, subglobular, with a deep umbilicus and flattened flanks that slope toward a more narrowly rounded venter, and covered by low, widely spaced ribs. (en)
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