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Mostrando ítems 11-20 de 1844
Flora fóssil dos níveis de bentonita da formação Campos Novos (Oligoceno Superior) Bacia de Boa Vista, PB, Brasil
(Universidade do Vale do Rio dos Sinos, 2015-03-02)
The end of Oligocene was a critical time for angiosperm evolution, with the definitive establishment of modern vegetation and grass-dominated landscapes. Is was also a time marked by important geological events, with the ...
Flora fóssil dos níveis de bentonita da formação Campos Novos (Oligoceno Superior) Bacia de Boa Vista, PB, Brasil
(Universidade do Vale do Rio dos Sinos, 2015-03-02)
The end of Oligocene was a critical time for angiosperm evolution, with the definitive establishment of modern vegetation and grass-dominated landscapes. Is was also a time marked by important geological events, with the ...
A leafcutter bee trace fossil from the middle eocene of patagonia, Argentina, and a review of Megachilid (Hymenoptera) ichnology
(Wiley Blackwell Publishing, Inc, 2008-07)
The ichnospecies Phagophytichnus pseudocircus isp. nov. is described to include trace fossils characterized by leaf-margin excisions showing eccentricity values of 0.35-0.65 and more than 270 degrees of an arc, a non cuspate ...
Application of vertebrate trace fossils to palaeoenvironmental analysis
(Elsevier Science, 2015-12)
This is a review of the main uses of vertebrate trace fossils, ichnofabrics and ichnofacies in the palaeoenvironmental analysis of sedimentary sequences. The article accounts for the significant developments produced in ...
Trace fossils and the agronmomic revolution at the Neoproterozoic – Cambrian transition in Southwest Gondwana
(Elsevier, 2009-12)
The Ediacaran-Early Cambrian transition in the southwestern margin of Gondwana is represented in the Andean Margin of South America by the thick sequence of the Puncoviscana Basin. In southern Africa, the Nama and Vanrhynsdorp ...
Redescription and reassignment of the fossil wood Menendoxylon piptadiensis from the Pliocene Andalhuala Formation, South America
(Cambridge University Press, 2017-11)
A new study of the holotype of Menendoxylon piptadiensis has revealed that this taxon possesses many diagnostic anatomical features not associated with Leguminoseae-Mimosoideae. In this contribution, it was described again ...
Insect Trace Fossil Associations in Paleosols: The Coprinisphaera Ichnofacies
(Society for Sedimentary Geology, 2000-02)
Analysis of fifty-eight paleosol trace fossil assemblages, ranging from the Triassic to the Recent, allows refinement of continental ichnofacies models and the proposal of a Coprinisphaera ichnofacies. The Coprinisphaera ...
Mesozoic phytoclast records in the Sriperumbudur (Palar Basin), Kota (Chintalapudi Sub-Basin) and Dubrajpur (Rajmahal Basin) formations, IndiaRegistros de fitoclastos mesozoicos nas formações Sriperumbudur (Bacia de Palar), Kota (Sub-bacia de Chintalapudi) e Dubrajpur (Bacia de Rajmahal), Índia
(Universidade de São Paulo, Instituto de Geociências, 2016)
Description of the Earliest Fossil Penguin from South America and First Paleogene Vertebrate Locality of Tierra Del Fuego, Argentina
(American Museum of Natural History, 2003-12)
We report the discovery of the first vertebrate from the Paleogene of Tierra del Fuego (Isla Grande), Argentina, in southernmost South America. The specimen consists of parts of an associated pelvic girdle and limb that ...
Walking on ashes: insect trace fossils from Laetoli indicate poor grass cover associated with early hominin environments
(Wiley Blackwell Publishing, Inc, 2018-07)
More than 4000 insect trace fossils collected in recent years from Pliocene deposits at Laetoli in northern Tanzania provide new insights on early hominin palaeoenvironments. These trace fossils include: Fictovichnus ...