Results 121 to 130 of about 235,426 (378)
The relationship between form and function of the carnivore mandible
The Anatomical Record, EarlyView.Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley +1 more source
Radiocarbon Chronologies and Extinction Dynamics of the Late Quaternary Mammalian Megafauna of the Taimyr Peninsula, Russian Federation [PDF]
, 2002 This paper presents 75 new radiocarbon dates based on late Quaternary mammal remains recovered from eastern Taimyr Peninsula and adjacent parts of the northern Siberian lowlands, Russian Federation, including specimens of woolly mammoth (Mammuthus ...
Agenbroad, L +11 more
core +2 more sources
An additional planet as a model for the Pleistocene Ice Age [PDF]
arXiv, 2002 We propose a model for the Pleistocene Ice Age, assuming the following scenario: Between 3 Myr and 11.5 kyr BP a Mars-sized object existed which moved in a highly eccentric orbit. Originating from this object, gas clouds with a complex dynamics reduced Earth's insolation and caused a drop in the global temperature.
arxiv
Why could ice ages be unpredictable? [PDF]
, 2013 It is commonly accepted that the variations of Earth's orbit and obliquity control the timing of Pleistocene glacial-interglacial cycles. Evidence comes from power spectrum analysis of palaeoclimate records and from inspection of the timing of glacial and deglacial transitions. However, we do not know how tight this control is.
arxiv +1 more source
A Needle in a Haystack: Landscape Survey and Archaeological Detection Experiments in Apalachee Bay
Archaeological Prospection, EarlyView.ABSTRACT This paper presents the results of a pilot landscape‐scale seismic survey undertaken in Apalachee Bay, Florida, across a submerged landscape that contains dozens of Pre‐Contact sites. In addition to the goals of improving the geophysical and remote sensing ground model for this submerged landscape, the survey also sought to undertake the first
Simon Fitch, Jessica Cook Hale
wiley +1 more source
Mingling of Pleistocene formations [PDF]
Geological Society of America Bulletin, 1912 Introduction Among the difficulties which beset the student of Pleistocene deposits in the field, none cause greater perplexity than the real or apparent intermingling of strata or masses belonging to different portions of this period. I t thus sometimes appears as if masses of different drifts are transposed or interglacial formations are out of ...
openaire +3 more sources
On the change of latitude of Arctic East Siberia at the end of the Pleistocene [PDF]
arXiv, 2007 Mammoths lived in Arctic East Siberia. In this region there is not sufficient sunlight over the year for the growth of the plants on which these animals feed. Therefore the latitude of this region was lower before the end of the Pleistocene. As the cause of this geographic pole shift, we postulate a massive object, which moved in an extremely eccentric
arxiv
The Depositional Record, EarlyView.A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo +1 more
wiley +1 more source
Breaking the Clovis glass ceiling: Native American oral history of the Pleistocene
AIMS GeosciencesThis is a data-based analysis of how Native American interpretations of their distant past are being considered reflecting new science findings. A key science understanding developed over the past 75 years has been that Native people did not occupy North
Richard W. Stoffle +4 more
doaj +1 more source
Development of a geological model useful for the study of the natural hazards in urban environments. An example from the eastern sector of Rome (Italy) [PDF]
, 2015 Detailed knowledge of the subsoil setting is an extremely important issue for a correct risk reduction policy, especially when dealing with urban areas hosting cultural heritage, which enhance risk conditions even at low geo-hazard levels, as in the case
Esposito, Carlo +2 more
core +1 more source