About: Chitinozoa   Sponge Permalink

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Chitinozoa (singular: chitinozoan, plural: chitinozoans) are a taxon of flask-shaped, organic walled marine microfossils produced by an as yet unknown animal. Common from the Ordovician to Devonian periods (i.e. the mid-Paleozoic), the millimetre-scale organisms are abundant in almost all types of marine sediment across the globe. This wide distribution, and their rapid pace of evolution, makes them valuable biostratigraphic markers.

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rdfs:label
  • Chitinozoa
rdfs:comment
  • Chitinozoa (singular: chitinozoan, plural: chitinozoans) are a taxon of flask-shaped, organic walled marine microfossils produced by an as yet unknown animal. Common from the Ordovician to Devonian periods (i.e. the mid-Paleozoic), the millimetre-scale organisms are abundant in almost all types of marine sediment across the globe. This wide distribution, and their rapid pace of evolution, makes them valuable biostratigraphic markers.
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dbkwik:fossil/prop...iPageUsesTemplate
Kingdom
  • Animalia
Name
  • Chitinozoa
Caption
  • Scanning electron micrograph of a late Silurian chitinozoan from the Burgsvik beds
fossil range
  • 489(xsd:integer)
  • Tremadocian - Kinderhookian
Class
  • (Eisenack, 1931)
  • Chitinozoa
Order
  • (Eisenack, 1972)
  • Operculatifera or Prosomatifera
subdivisions
  • *Conochitinidae *Desmochitinidae *Lagenochitinidae
Phylum
  • incertae sedis
abstract
  • Chitinozoa (singular: chitinozoan, plural: chitinozoans) are a taxon of flask-shaped, organic walled marine microfossils produced by an as yet unknown animal. Common from the Ordovician to Devonian periods (i.e. the mid-Paleozoic), the millimetre-scale organisms are abundant in almost all types of marine sediment across the globe. This wide distribution, and their rapid pace of evolution, makes them valuable biostratigraphic markers. Their bizarre form has made classification and ecological reconstruction difficult. Since their discovery in 1931, suggestions of protist, plant, and fungal affinities have all been entertained. The organisms have been better understood as improvements in microscopy facilitated the study of their fine structure, and there is mounting evidence to suggest that they represent either the eggs or juvenile stage of a marine animal.
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