Results 91 to 100 of about 235,426 (378)

Taxonomy and palaeoecology of continental Gastropoda (Mollusca) from the Late Pleistocene mammoth-bearing site of Bullendorf in NE Austria [PDF]

open access: yes, 2018
We present a taxonomic and palaeoecological analysis of a continental mollusc fauna from a mammoth-bearing succession near Bullendorf in Lower Austria.
Carobene, Daria   +3 more
core   +2 more sources

The Middle Pleistocene Transition by frequency locking and slow ramping of internal period [PDF]

open access: yes, 2019
The increase in glacial cycle length from approximately $41$ to on average $100$ thousand years around $1$ million years ago, called the Middle Pleistocene Transition (MPT), lacks a conclusive explanation. We describe a dynamical mechanism which we call Ramping with Frequency Locking (RFL), that explains the transition by an interaction between the ...
arxiv   +1 more source

Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis

open access: yesThe Anatomical Record, EarlyView.
Abstract The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho
Narimane Chatar   +5 more
wiley   +1 more source

Occurrence of Shorea Roxburgh ex C. F. Gaertner (Dipterocarpaceae) in the Neogene Siwalik forests of eastern Himalaya and its biogeography during the Cenozoic of Southeast Asia [PDF]

open access: yes, 2016
We report the occurrence of two leaf impressions and one leaf compression along with one winged fruit and two fruiting calyx lobes, resembling those of Shorea Roxburgh ex C. F.
Bera, Subir   +3 more
core   +1 more source

Evidence for Nearby Supernova Explosions [PDF]

open access: yesPhys.Rev.Lett. 88 (2002) 081101, 2002
Supernova explosions are one of the most energetic--and potentially lethal--phenomena in the Universe. Scientists have speculated for decades about the possible consequences for life on Earth of a nearby supernova, but plausible candidates for such an event were lacking.
arxiv   +1 more source

Myological and osteological approaches to gape and bite force reconstruction in Smilodon fatalis

open access: yesThe Anatomical Record, EarlyView.
Abstract Masticatory gape and bite force are important behavioral and ecological variables. While much has been written about the highly derived masticatory anatomy of Smilodon fatalis, there remains a great deal of debate about their masticatory behaviors.
Ashley R. Deutsch   +5 more
wiley   +1 more source

Wetland occupancy by duck broods in cropland‐dominated landscapes of the United States Prairie Pothole Region

open access: yesThe Journal of Wildlife Management, Volume 87, Issue 2, February 2023., 2023
We evaluated how wetland occupancy by duck broods varied across crop‐dominated landscapes of the Prairie Pothole Region (PPR) in the United States to inform conservation strategies in the face of widespread land use alterations and climate change. We found about 4 in 10 small wetlands in crop‐dominated landscapes within the PPR were used by duck broods
Blake J. Mitchell   +5 more
wiley   +1 more source

Vegetation of central Carpathians foreland at the Late Glacial period

open access: yesБіологічні студії, 2009
Palaeopalynological analysis of two organic Quaternary deposits revealed that plant community of taiga-type with sizeable xerotic herbaceous coenosis were spread in the central part of Carpathian Foreland during the Late Glacial period. The forest-steppe
N. Kalinovych
doaj   +1 more source

Clay Mineralogy of Red Clay Deposits from the Central Carpathian Basin (Hungary): Implications for Plio/Pleistocene Chemical Weathering and Paleoclimate [PDF]

open access: yes, 2013
Geochemical and mineralogical studies of palaeosols provide essential information for palaeoclimatic and palaeoenvironmental interpretation of continental deposits and can present a proxy for palaeoclimate.
Kovács, János   +5 more
core  

First occurrence of mastixioid (Cornaceae) fossil in India and its biogeographic implications [PDF]

open access: yes, 2017
Mastixioids in the family Cornaceae, are presently native only in limited areas of Asia, they have rich fossil fruit record in Cenozoic sediments of Europe and North America, but unfortunately none have been reported from Cenozoic sediments of India and ...
Bera, Meghma   +4 more
core   +1 more source

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