Results 221 to 230 of about 35,895 (262)

Radiolaria : Newsletter of the International Association of Radiolarian Paleontologists [PDF]

, 2004

core  

Radioisotopic chronology of Ocean Anoxic Event 1a: Framework for analysis of driving mechanisms. [PDF]

Sci Adv
Li Y, Singer BS, Takashima R, Schmitz MD, Podrecca LG, Sageman BB, Selby D, Yamanaka T, Mohr MT, Hayashi K, Tomaru T, Savatic K.   +11 more
europepmc   +1 more source

Advances in Ediacaran biostratigraphy in Australia

Carnets de Géologie, 2007
Grey Kathleen
doaj  

Ice sheet expansion in the Cretaceous greenhouse world. [PDF]

Fundam Res
Wang T, He S, Zhang Q, Ding L, Farnsworth A, Cai F, Wang C, Xie J, Li G, Sheng J, Yue Y.   +10 more
europepmc   +1 more source

Overview and biostratigraphy [PDF]

Geological Society, London, Memoirs, 2014
Abstract Excellent coastal exposures of strongly folded and faulted Cambrian rocks occur around the St David's Peninsula of SW Wales. The best sections occur in the St David's Anticline, in the vicinity of St David's itself, and these have been the subject of scientific study since the mid-Nineteenth Century.
H. E. Hughes, H. E. Hughes, Alan T. Thomas, A. J. Rees, A. J. Rees, M. Lewis, P. Turner   +6 more
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Micropaleontology and Biostratigraphy

2021
To stratify six sediment cores, we applied the calcareous plankton biostratigraphy of the upper sediment cover based on the foraminiferal and nannofossil zonations suggested in Chap. 3 for the Ioffe Drift area. Datum levels (first and last appearances) of zonal index species in individual cores were used to denote zonal boundaries. The oldest recovered
Elena Ivanova, Olga Dmitrenko
openaire   +2 more sources

Carboniferous conodont biostratigraphy

Geological Society, London, Special Publications, 2021
Abstract Carboniferous conodont biostratigraphy comprises regional zonations that reflect the palaeogeographical distribution of taxa and distinct shallow-water and deep-water conodont biofacies. Some species have a global distribution and can effect high quality correlations.
N. V. Goreva, James E. Barrick, Keyi Hu, Keyi Hu, Scott M. Ritter, Tamara I. Nemyrovska, Lance L. Lambert, Yuping Qi, Javier Sanz-López, Silvia Blanco-Ferrera, Alexander S. Alekseev, Alexander S. Alekseev   +11 more
openaire   +2 more sources

Biostratigraphy of Triassic Ammonoids

2015
The Triassic is a turning point in the evolutionary history of ammonoids, characterized by the flourishing Ceratitida and the appearance of the first heteromorphs. Following the end-Permian mass extinction, ammonoids were among the first groups to rediversify by producing many new taxa.
Jenks, James F., Monnet, Claude, Balini, Marco, Brayard, Arnaud, Meier, Maximiliano   +4 more
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Systematic biostratigraphy: A solution to problematic classification systems in biostratigraphy

Palaeoworld, 2014
Abstract Systematic biostratigraphy is based on the exclusive use of monophyletic marker taxa. Non-monophyletic, or artificial, marker taxa have been shown to change biostratigraphic correlations, a situation that can be rectified by using systematics to ensure that marker taxa are monophyletic or natural.
Tegan A. Vanderlaan, Malte C. Ebach
openaire   +2 more sources