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Koessen Beds

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Journal Article
Journal: Geology
Published: 01 July 2014
Geology (2014) 42 (7): 571-574.
... importance for assessing mechanisms of environmental perturbations and associated biologic consequences preceding the end-Triassic mass extinction. Here we report new chemical abrasion–isotope dilution–thermal ionization mass spectrometry zircon U-Pb dates for volcanic ash beds within the Aramachay Formation...
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Journal Article
Published: 12 September 2011
Geological Magazine (2011) 149 (2): 308-332.
... at the top of Koessen Fm (Hillebrandt et al . 2007 ) and in Csövár (Pálfy et al . 2001 , 2007 ). Lithologically these beds comprise grey sandstone and mudstone with coalified rootlets. Carbonate concretions are replaced by sideritic ones, and their oxidization is responsible for red staining...
Journal Article
Journal: Palynology
Published: 02 January 2019
Palynology (2019) 43 (1): 104-150.
... of the dinocyst group Scriniodinium–Endoscrinium–Athigmatocysta and description of the new species Scriniodinium multistratum sp. nov. from the Jurassic‒Cretaceous boundary beds of Northern Siberia. Paleontological Journal , 51(2): 214–222 (doi: 10.1134...
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Journal Article
Published: 01 January 2006
Journal of Paleontology (2006) 80 (1): 104-120.
... and ornament. In Southeast Asia, Healey (1908) illustrated P . cf. P. blanfordi ( Böttger, 1880 ) as a Rhaetian form in the Napeng beds of Myanmar; however, the Southeast Asian form has much stronger radial ribs. Genus Pteria Scopoli, 1777 Gervilleia angusta ( Münster ). Bittner , 1895...
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