Results 111 to 120 of about 87,970 (275)

THE GELASIAN STAGE: A PROPOSAL OF A NEW CHRONOSTRATIGRAPHIC UNIT OF THE PLIOCENE SERIES

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
A new Stage, the Gelasian, is proposed as the third upper subdivision of the Pliocene Series. The GSSP of the base of the Gelasian Stage and of the Middle Pliocene-Upper Pliocene boundary is coincident with a "sapropel" level which outcrops in the Monte ...
DOMENICO RIO   +2 more
doaj   +1 more source

Lower Pliocene Hominid Remains from Sterkfontein

open access: yesScience, 2003
Cosmogenic aluminum-26 and beryllium-10 burial dates of low-lying fossiliferous breccia in the caves at Sterkfontein, South Africa, show that associated hominid fossils accumulated in the Lower Pliocene. These dates indicate that the skeleton StW 573 and newly discovered specimens from Jacovec Cavern have much the same age: approximately 4
Partridge, T. C.   +3 more
openaire   +4 more sources

Geology of the Tehachapi Mountains, California [PDF]

open access: yes, 1954
The San Joaquin-Sacramento Valley, also known as the Great Valley of California, separates the Coast Ranges on the west from the Sierra Nevada on the east. The southern part of this major physiographic and structural province is about 50 miles in average
Buwalda, John P.
core  

Homo sapiens, industrialisation and the environmental mismatch hypothesis

open access: yesBiological Reviews, EarlyView.
ABSTRACT For the vast majority of the evolutionary history of Homo sapiens, a range of natural environments defined the parameters within which selection shaped human biology. Although human‐induced alterations to the terrestrial biosphere have been evident for over 10,000 years, the pace and scale of change has accelerated dramatically since the onset
Daniel P. Longman, Colin N. Shaw
wiley   +1 more source

Evolution of the Giant Foresets Formation, northern Taranaki Basin, New Zealand [PDF]

open access: yes, 2002
Plio-Pleistocene aggradation and progradation has resulted in the rapid outbuilding of the continental shelf margin, northern Taranaki Basin. Seismic reflection profiles reveal that this outbuilding is characterised by bold clinoforms which offlap in a ...
Hansen, Rochelle J., Kamp, Peter J.J.
core   +3 more sources

Distribution modelling for Neotropical freshwater stingrays Potamotrygon brachyura and Potamotrygon motoro (Myliobatiformes, Potamotrygonidae) in the Uruguay River basin

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study aimed to identify geographical distribution patterns of the giant short‐tailed river stingray Potamotrygon brachyura and the motoro stingray Potamotrygon motoro in the Uruguay River basin. Data on presence/absence of stingrays were based on fishers' knowledge accessed by interviews through expeditions in Brazil, Argentina and ...
Danilo Araujo Soares Pereira   +2 more
wiley   +1 more source

Plastid and nuclear phylogenomics of Cyphostemma (Vitaceae) provide new insights into genome size evolution across sub‐Saharan Africa

open access: yesJournal of Integrative Plant Biology, EarlyView.
Some African Cyphostemma species evolved much larger genomes as they adapted to dry, rocky habitats. These expansions are linked to succulent traits and specialization on nutrient‐rich limestone outcrops. The findings show how climate‐driven aridification shaped plant evolution and highlight broader genome‐environment patterns across flowering plants ...
Rindra M. Ranaivoson   +18 more
wiley   +1 more source

Haplotype‐resolved telomere‐to‐telomere genome of the jade vine (Strongylodon macrobotrys) provides novel insights into the turquoise flower coloration

open access: yesJournal of Integrative Plant Biology, EarlyView.
A haplotype‐resolved telomere‐to‐telomere genome reveals that the bird‐shaped turquoise flowers of Strongylodon macrobotrys (jade vine) arise from co‐pigmentation between the anthocyanin malvin and the flavonoid saponarin, shaped by genome dynamics and geological event‐associated expansions of long terminal repeat ...
Tong‐Jian Liu   +11 more
wiley   +1 more source

V.—On some Pliocene and Post-Pliocene Shells from Egypt [PDF]

open access: yesGeological Magazine, 1899
The following notes have been drawn up from a small series of shells belonging to the late Tertiary and Post-Tertiary formations of Egypt, which form part of a collection of fossils sent home for determination by Captain Lyons, R.E., Director-General of the Geological Survey of Egypt.
openaire   +1 more source

Expedition 306 summary

open access: yes, 2006
The overall aim of the North Atlantic paleoceanography study of Integrated Ocean Drilling Program Expedition 306 is to place late Neogene–Quaternary climate proxies in the North Atlantic into a chronology based on a combination of geomagnetic ...
Aboud, Essam   +26 more
core   +1 more source

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