About: Perspicaris

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Perspicaris (from the Latin perspicax, meaning “sharp-sighted,” and caris, “crab/shrimp”) an extinct genus of bivalved arthropod from the Cambrian period. Fossils have been found in North America, primarily the Burgess Shale of British Columbia, Canada but also possibly the Wheeler Shale, Marjum Formation, Pioche Shale and . Two named species are known from the Burgess Shale Perspicaris dictynna and Perspicaris recondita, which differ in maximum size (66 millimetres (2.6 in) in P. recondita vs 29 millimetres (1.1 in) in P. dictynna), as well as proportions of the tail. Both species have a pair of stalked eyes, as well as a pair of large segmented antennae. The tail is forked and spiny. They are thought to have been active swimmers (nektonic).

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  • Perspicaris ist ein ausgestorbener Gliederfüßer, der in Form von Fossilien aus dem Kambrium erforscht wurde. Perspicaris ist einer der sehr urtümlichen Gliederfüßer aus dem Burgess Shale und daher für die Klärung des Ursprungs der Gruppe im Rahmen der Radiation der vielzelligen Tiere (Kambrische Explosion) relevant. Das Fossil wurde 1977 von D.E.G. Briggs im Detail beschrieben. Das lebende Tier war etwa 2–3 cm lang und bewegte sich vermutlich schwimmend fort. Es hatte einen zweigeteilten Panzer und ausgeprägte Stielaugen; der Name Perspicaris bedeutet „scharfäugige Krabbe“ (Briggs 1977). (de)
  • Perspicaris est un genre éteint d'arthropodes, relativement rare, trouvé dans les schistes de Burgess datés du Cambrien moyen, il y a environ 505 Ma (millions d'années). (fr)
  • Perspicaris fue un género de artrópodo himenocarino del Cámbrico medio de América del Norte. Se trata de un género diverso, con cuatro especies asignadas al género, aunque es posible que dos de ellas pertenezcan a su propio género.​​​ El nombre genérico viene del latín perspicax, “perspicaz,” y del griego caris, “cangrejo o gamba,” así significando "Gamba Perspicaz", en referencia a sus ojos proporcionalmente grandes. (es)
  • Perspicaris (from the Latin perspicax, meaning “sharp-sighted,” and caris, “crab/shrimp”) an extinct genus of bivalved arthropod from the Cambrian period. Fossils have been found in North America, primarily the Burgess Shale of British Columbia, Canada but also possibly the Wheeler Shale, Marjum Formation, Pioche Shale and . Two named species are known from the Burgess Shale Perspicaris dictynna and Perspicaris recondita, which differ in maximum size (66 millimetres (2.6 in) in P. recondita vs 29 millimetres (1.1 in) in P. dictynna), as well as proportions of the tail. Both species have a pair of stalked eyes, as well as a pair of large segmented antennae. The tail is forked and spiny. They are thought to have been active swimmers (nektonic). Perspicaris has been identified as a member of a clade Hymenocarina close to the crown-group of Euarthropoda, which includes myriapods, chelicerates, insects and crustaceans. (en)
  • La perspicaride (gen. Perspicaris) è un artropodo estinto, vissuto nel Cambriano medio (circa 505 milioni di anni fa). I suoi resti sono stati rinvenuti in Nordamerica, soprattutto nel ben noto giacimento di Burgess Shales, in Canada. (it)
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  • Perspicaris (en)
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  • Briggs 1977 (en)
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  • Perspicaris recondita.png (en)
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  • Restoration of Perspicaris recondita (en)
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  • Life restoration of Perspicaris dictynna (en)
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  • Arthropoda (en)
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  • Animalia (en)
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  • *P. recondita *P. dictynna (en)
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  • Species (en)
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  • Perspicaris ist ein ausgestorbener Gliederfüßer, der in Form von Fossilien aus dem Kambrium erforscht wurde. Perspicaris ist einer der sehr urtümlichen Gliederfüßer aus dem Burgess Shale und daher für die Klärung des Ursprungs der Gruppe im Rahmen der Radiation der vielzelligen Tiere (Kambrische Explosion) relevant. Das Fossil wurde 1977 von D.E.G. Briggs im Detail beschrieben. Das lebende Tier war etwa 2–3 cm lang und bewegte sich vermutlich schwimmend fort. Es hatte einen zweigeteilten Panzer und ausgeprägte Stielaugen; der Name Perspicaris bedeutet „scharfäugige Krabbe“ (Briggs 1977). (de)
  • Perspicaris est un genre éteint d'arthropodes, relativement rare, trouvé dans les schistes de Burgess datés du Cambrien moyen, il y a environ 505 Ma (millions d'années). (fr)
  • Perspicaris fue un género de artrópodo himenocarino del Cámbrico medio de América del Norte. Se trata de un género diverso, con cuatro especies asignadas al género, aunque es posible que dos de ellas pertenezcan a su propio género.​​​ El nombre genérico viene del latín perspicax, “perspicaz,” y del griego caris, “cangrejo o gamba,” así significando "Gamba Perspicaz", en referencia a sus ojos proporcionalmente grandes. (es)
  • La perspicaride (gen. Perspicaris) è un artropodo estinto, vissuto nel Cambriano medio (circa 505 milioni di anni fa). I suoi resti sono stati rinvenuti in Nordamerica, soprattutto nel ben noto giacimento di Burgess Shales, in Canada. (it)
  • Perspicaris (from the Latin perspicax, meaning “sharp-sighted,” and caris, “crab/shrimp”) an extinct genus of bivalved arthropod from the Cambrian period. Fossils have been found in North America, primarily the Burgess Shale of British Columbia, Canada but also possibly the Wheeler Shale, Marjum Formation, Pioche Shale and . Two named species are known from the Burgess Shale Perspicaris dictynna and Perspicaris recondita, which differ in maximum size (66 millimetres (2.6 in) in P. recondita vs 29 millimetres (1.1 in) in P. dictynna), as well as proportions of the tail. Both species have a pair of stalked eyes, as well as a pair of large segmented antennae. The tail is forked and spiny. They are thought to have been active swimmers (nektonic). (en)
rdfs:label
  • Perspicaris (de)
  • Perspicaris (es)
  • Perspicaris (it)
  • Perspicaris (fr)
  • Perspicaris (en)
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