About: Chancelloriidae     Goto   Sponge   NotDistinct   Permalink

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The Chancelloriids are an extinct family of superficially sponge-like animals common in sediments from the Early Cambrian to the early Late Cambrian. Many of these fossils consists only of spines and other fragments, and it is not certain that they belong to the same type of organism. Other specimens appear to be more complete and to represent sessile, radially symmetrical hollow bag-like organisms with a soft skin armored with star-shaped calcareous sclerites from which radiate sharp spines.

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  • Chancelloriidae (en)
  • Chancelloriidae (de)
  • Chancelloriidae (pt)
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  • Die Chancelloriidae (seltener auch Chancelloridae geschrieben) sind eine ausgestorbene Familie des Tierreichs (von späteren Autoren teilweise auch im Rang einer Ordnung geführt), die in Sedimenten des Unterkambriums erstmals auftreten und bis ins frühe Oberkambrium verbreitet waren. Ihre taxonomische Zuordnung ist schwierig, sie könnten aber in die Nähe von Schwämmen gerückt werden. Auch mit den Halkieriidae bestehen Gemeinsamkeiten in der Form der Skelettnadeln. (de)
  • The Chancelloriids are an extinct family of superficially sponge-like animals common in sediments from the Early Cambrian to the early Late Cambrian. Many of these fossils consists only of spines and other fragments, and it is not certain that they belong to the same type of organism. Other specimens appear to be more complete and to represent sessile, radially symmetrical hollow bag-like organisms with a soft skin armored with star-shaped calcareous sclerites from which radiate sharp spines. (en)
  • Chancelloriidae é uma família de animais fósseis do período Cambriano de posição taxonômica incerta. Foram descritos pela primeira vez em 1920 por Charles Doolittle Walcott que os considerou como um grupo primitivo de esponjas. Restos fósseis da família foram encontrados no Canadá, Estados Unidos, Rússia, China, Austrália, Espanha, Marrocos e Antártida. Gêneros reconhecidos: (pt)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Halkieriid_sclerite_structure_300.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Allonnia_pennetta.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Chancelloria_eros_fossil,_Middle_Cambrian,_Millard_County_UT.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Chancelloria_pentacta_cambr_med_utah.jpg
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