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Biozone |
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biozone [′bīยทō‚zōn]
(paleontology) The range of a single taxonomic entity in geologic time as reflected by its occurrence in fossiliferous rocks. Biozone deposits corresponding to the vertical distribution of any single systematic group (species, genus, family) of fossil organisms. The term was proposed by the English geologist S. Buckman in 1902. In addition to the term “biozone,” the concept of a stratigraphic zone established by a complex of fossil organisms also exists. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Before they arrived in Baltica, Telephina species inhabited a range of environments in the Precordillera from the Arenig evae Biozone (F12) to the Caradoc, and in Laurentia from the Llanvirn to the Caradoc. In Estonia, the Kukruse Regional Stage has been considered roughly coeval with the Nemagraptus gracilis Biozone [12]. Healthy, male WKY rats (WKY/Kyo@Rj rats, Janvier, Le Genest Saint Isle, France) 8-10 weeks of age and approximately 250 g body weight (bw) were housed in pairs in a humidity-controlled (55% relative humidity) and temperature-controlled (22[degrees]C) room in individually ventilated cages (VentiRack, cage type CU-31; BioZone Limited, Margate, Kent, UK), maintained on a 12-hr day/night cycle. |
Biozone |
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