Diet and isotopes of Late Pleistocene ground sloths: first results for Lestodon and Glossotherium (Xenarthra, Tardigrada)

2011 ◽  
Vol 262 (3) ◽  
pp. 257-266 ◽  
Author(s):  
Ada Czerwonogora ◽  
Richard A. Fariña ◽  
Eduardo Pedro Tonni
2019 ◽  
Vol 486 (1) ◽  
pp. 503-506 ◽  
Author(s):  
A. A. Shchetnikov ◽  
E. V. Bezrukova ◽  
E. V. Kerber ◽  
O. Yu. Belozerova ◽  
M. I. Kuzmin ◽  
...  

2020 ◽  
Vol 544 ◽  
pp. 109599 ◽  
Author(s):  
Emily L. Lindsey ◽  
Erick X. Lopez Reyes ◽  
Gordon E. Matzke ◽  
Karin A. Rice ◽  
H. Gregory McDonald

2021 ◽  
Vol 84 (3) ◽  
pp. 337-357
Author(s):  
Robert G. Bednarik

Abstract Following the refutation of the replacement hypothesis, which had proposed that a ‘superior’ hominin species arose in Africa and replaced all other humans existing at the time, the auto-domestication hypothesis remains the only viable explanation for the relatively abrupt change from robust to gracile humans in the Late Pleistocene. It invokes the incidental institution of the domestication syndrome in humans, most probably by newly introduced cultural practices. It also postulates that the induction of exograms compensated for the atrophy of the brain caused by domestication. This new explanation of the origins of modernity in humans elucidates practically all its many aspects, in stark contrast to the superseded replacement hypothesis, which explained virtually nothing. The first results of the domestication syndrome’s genetic exploration have become available in recent years, and they endorse the human self-domestication hypothesis.


2016 ◽  
Vol 418 ◽  
pp. 132-146 ◽  
Author(s):  
Vladimir Sheinkman ◽  
Sergey Sedov ◽  
Lyudmila Shumilovskikh ◽  
Elena Korkina ◽  
Sergey Korkin ◽  
...  

Radiocarbon ◽  
1992 ◽  
Vol 34 (3) ◽  
pp. 806-817 ◽  
Author(s):  
Mike Barbetti ◽  
Trevor Bird ◽  
George Dolezal ◽  
Gillian Taylor ◽  
Roger Francey ◽  
...  

Dendrochronological studies have begun on two conifer species in the Stanley River area of western Tasmania. The chronology extends to 273 BC for Huon pine (Lagarostrobos franklinii) and to AD 1450 for celery-top pine (Phyllocladus aspleniifolius). Apart from living or recently felled trees, sections have been taken from 58 logs preserved in floodplain sediments. Two of these logs have late Pleistocene ages, centered around 13.0 and 12.7 k 14C yr bp. Four logs are between 8 and 9 ka BP, and one is centered at 7.3 ka bp. The remaining logs have various ages between 6.2 ka BP and the present. 14C measurements have been performed on decadal samples from the two late Pleistocene logs, providing short (260-yr) records of atmospheric 14C variations when plotted against individual ring numbers. Decadal measurements on the 7300-yr-old log have been wiggle-matched with 14C calibration curves from German oak and bristlecone pine. Measurements for the period, AD 1600–1800, show good agreement with northern hemisphere results, and a nearly zero offset between the hemispheres.


1976 ◽  
Vol 32 ◽  
pp. 577-588
Author(s):  
C. Mégessier ◽  
V. Khokhlova ◽  
T. Ryabchikova

My talk will be on the oblique rotator model which was first proposed by Stibbs (1950), and since received success and further developments. I shall present two different attempts at describing a star according to this model and the first results obtained in the framework of a Russian-French collaboration in order to test the precision of the two methods. The aim is to give the best possible representation of the element distributions on the Ap stellar surfaces. The first method is the mathematical formulation proposed by Deutsch (1958-1970) and applied by Deutsch (1958) to HD 125248, by Pyper (1969) to α2CVn and by Mégessier (1975) to 108 Aqr. The other one was proposed by Khokhlova (1974) and used by her group.


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