Results 91 to 100 of about 169 (141)
The origin and initial rise of pelagic cephalopods in the Ordovician. [PDF]
PLoS One, 2009 Kröger B, Servais T, Zhang Y.
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The microfossil record of early land plants. [PDF]
Philos Trans R Soc Lond B Biol Sci, 2000 Wellman CH, Gray J.
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Late Ordovician Mass Extinction: Earth, fire and ice. [PDF]
Natl Sci RevHarper DAT.
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Silurian Climatic Zonation of Cryptospore, Trilete Spore and Plant Megafossils, with Emphasis on the Přídolí Epoch. [PDF]
Life (Basel)Bek J +3 more
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CHITINOZOANS AT THE LLANDOVERY–WENLOCK TRANSITION IN THE JAAGARAHU CORE, ESTONIA [PDF]
Proceedings of the Estonian Academy of Sciences. Geology, 1993 openaire +1 more source
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Raman spectroscopy of chitinozoans as a maturation indicator
Organic Geochemistry, 1995Abstract Micro-Raman spectra were acquired from a series of individual chitinozoans of low ( R ch 0.6%) to high thermal maturity ( R ch 5.1%). This provides information on their molecular and structural characteristics. All spectra show two broad bands on a fluorescent background at ∼ 1600 and 1355 cm −1 .
John E A Marshall
exaly +2 more sources
Caradocian chitinozoans from the Central Basin, Tennessee
Review of Palaeobotany and Palynology, 1998Abstract Chitinozoans occur in low numbers and diversity in all formations of the Caradocian Stones River and Nashville Groups of the Central Basin, Tennessee. Sixteen species have been found in the interval studied: Belonechitina micracantha, B. robusta, B. seriespinosa, B. wesenbergensis, Calpichitina lata, Conochitina elegans, C.
William G Siesser
exaly +3 more sources
A revised chitinozoan classification
Journal of Paleontology, 1999The successful definition of chitinozoan genera depends primarily on the precision of the criteria used. A standardized morphological terminology based upon details from scanning electron microscope observations of the most representative taxa bearing these characters is therefore proposed.
Florentin Paris +3 more
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