Xenacanthus is a genus of prehistoric sharks. The first species of the genus lived in the later Devonian period, and they survived until the end of the Triassic, 202 million years ago. Fossils of various species have been found worldwide.Xenacanthus had a number of features that distinguished it from modern sharks. This freshwater shark was about one meter (three feet) in length.

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  • Xenacanthus es un género extinto de tiburones que vivieron entre el Devónico y el Triásico, hasta hace 202 millones de años. Se han encontrado varios fósiles en distintas partes mundo.
  • Il genere di squali preistorici Xenacanthus è estinto. Appartiene alla famiglia Xenacanthidae ed all'ordine Xenacanthida. Sembra che siano vissuti nel periodo compreso tra l'inizio del Devoniano e la fine del Triassico, 202 milioni di anni fa. Queste specie di acqua dolce avevano una lunga spina sulla parte posteriore della testa. I resti fossilizzati che ci sono pervenuti consistono soprattutto di denti e delle succitate spine.
  • Xenacanthus est un genre fossile de requins de la famille des Xenacanthidae. Ses représentants vivaient de la fin du Dévonien et ont survécu jusqu'à la fin du Trias.
  • Xenacanthus is een uitgestorven geslacht van haaien. Dit geslacht kwam voor in het Laat-Devoon tot Midden-Perm en was wereldwijd verspreid.
  • Xenacanthus is a genus of prehistoric sharks. The first species of the genus lived in the later Devonian period, and they survived until the end of the Triassic, 202 million years ago. Fossils of various species have been found worldwide.Xenacanthus had a number of features that distinguished it from modern sharks. This freshwater shark was about one meter (three feet) in length. The dorsal fin was ribbon-like and ran the entire length of the back and round the tail, where it joined with the anal fin. This arrangement resembles that of modern conger eels, and Xenacanthus probably swam in a similar manner. A distinctive spine projected from the back of the head, and gives the genus its name. The teeth had an unusual V-shape, and it probably fed on small crustaceans, and heavily scaled palaeoniscid fishes.As in all fossil sharks, Xenacanthus is mainly known because of fossilised teeth and spines.
  • Xenacanthus (лат.) — род вымерших хрящевых рыб семейства Xenacanthidae отряда Xenacanthida из подкласса пластиножаберных. Появились в позднем девоне, вымерли в конце триасового периода, около 202 миллионов лет назад. Ископаемые различных видов найдены по всему миру.Xenacanthus были пресноводными акулами. В длину достигали одного метра. Строение тела больше напоминает строение современного угря.Зубы имели V-образную форму. Пищей скорее всего были мелкие ракообразные.
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  • Pleuracanthus
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  • Xenacanthidae
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  • Xenacanthus
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  • Impression of the head and body of Xenacanthus sessilis at the Museum für Naturkunde, Berlin
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  • Xenacanthus
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  • Animalia
dbp:subclassis
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  • See text.
dbp:subdivisionRanks
  • Species
dbp:synonyms
  • Pleuracanthus
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rdfs:comment
  • Xenacanthus es un género extinto de tiburones que vivieron entre el Devónico y el Triásico, hasta hace 202 millones de años. Se han encontrado varios fósiles en distintas partes mundo.
  • Il genere di squali preistorici Xenacanthus è estinto. Appartiene alla famiglia Xenacanthidae ed all'ordine Xenacanthida. Sembra che siano vissuti nel periodo compreso tra l'inizio del Devoniano e la fine del Triassico, 202 milioni di anni fa. Queste specie di acqua dolce avevano una lunga spina sulla parte posteriore della testa. I resti fossilizzati che ci sono pervenuti consistono soprattutto di denti e delle succitate spine.
  • Xenacanthus est un genre fossile de requins de la famille des Xenacanthidae. Ses représentants vivaient de la fin du Dévonien et ont survécu jusqu'à la fin du Trias.
  • Xenacanthus is een uitgestorven geslacht van haaien. Dit geslacht kwam voor in het Laat-Devoon tot Midden-Perm en was wereldwijd verspreid.
  • Xenacanthus (лат.) — род вымерших хрящевых рыб семейства Xenacanthidae отряда Xenacanthida из подкласса пластиножаберных. Появились в позднем девоне, вымерли в конце триасового периода, около 202 миллионов лет назад. Ископаемые различных видов найдены по всему миру.Xenacanthus были пресноводными акулами. В длину достигали одного метра. Строение тела больше напоминает строение современного угря.Зубы имели V-образную форму. Пищей скорее всего были мелкие ракообразные.
  • Xenacanthus is a genus of prehistoric sharks. The first species of the genus lived in the later Devonian period, and they survived until the end of the Triassic, 202 million years ago. Fossils of various species have been found worldwide.Xenacanthus had a number of features that distinguished it from modern sharks. This freshwater shark was about one meter (three feet) in length.
rdfs:label
  • Xenacanthus
  • Xenacanthus
  • Xenacanthus
  • Xenacanthus
  • Xenacanthus
  • Xenacanthus
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  • Xenacanthus
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