Testate amoebae from a Cretaceous forest floor microbiocoenosis of France - Archive ouverte HAL Access content directly
Journal Articles Journal of Eukaryotic Microbiology Year : 2010

Testate amoebae from a Cretaceous forest floor microbiocoenosis of France

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Vincent Girard
  • Function : Author
  • PersonId : 759647
  • IdRef : 169323617
Vincent Perrichot
Wilfried Schonborn
  • Function : Author

Abstract

Amber-preserved shells of testate amoebae often provide as many diagnostic features as the tests of modern taxa. Most of these well-preserved microfossils are morphologically assignable to modern species indicating either evolutionary stasis or convergent evolution. Here we describe two Lower Cretaceous testate amoebae that are clearly distinguishable from modern species. Centropyxis perforata n. sp. and Leptochlamys galippei n. sp. possessed perforate shells that were previously unknown in these genera. They are preserved in highly fossiliferous amber pieces from the Upper Albian (ca. 100 million years old) of Archingeay/Les Nouillers (Charente-Maritime, southwestern France). Syninclusions of soil and litter dwelling arthropods and microorganisms indicate a limnetic-terrestrial microhabitat at the floor of a coastal conifer forest.

Dates and versions

insu-00605275 , version 1 (01-07-2011)

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Alexander-R. Schmidt, Vincent Girard, Vincent Perrichot, Wilfried Schonborn. Testate amoebae from a Cretaceous forest floor microbiocoenosis of France. Journal of Eukaryotic Microbiology, 2010, 57 (3), pp.245-249. ⟨10.1111/j.1550-7408.2010.00471.x⟩. ⟨insu-00605275⟩
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