Results 101 to 110 of about 7,955,044 (242)

The role of teeth in mammal History

open access: yesBrazilian Journal of Oral Sciences, 2015
Teeth are more than hard structures for cutting, grinding and/or crushing food. Teeth, living or dead, have much to contribute to the study of ecology, paleontology, functional morphology and systematic.
Lílian Paglarelli Bergqvist
doaj   +1 more source

Paleontology and Geology of the Upper Triassic (Revueltian) Snyder Quarry, New Mexico

open access: yes, 2003
paleontology; geology; Triassic; Revueltian; Snyder quarry; New ...
Kate E. Zeigler, Andrew B. Heckert and Spencer G. Lucas, eds.
core  

Late Quaternary lake filling and drying in northern Australia's largest freshwater lake

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Lake Woods, Jurrkulu, is northern Australia's largest freshwater lake filled today in strong Indo–Australian summer monsoons (IASM) to maximum depths of ~5 m. On the western margins of the lake, two large arcuate ridges occur 20 to 40 m above the lake floor and inset within these are other mid‐elevation lake deposits, such as depositional ...
Tim J. Cohen   +14 more
wiley   +1 more source

New insights into pterosaur cranial anatomy: X-ray imaging reveals palatal structure and evolutionary trends

open access: yesCommunications Biology
Among the least studied portion of the pterosaur skeleton is the palate, which tends to be poorly preserved and commonly only visible from one side (the ventral portion).
He Chen   +3 more
doaj   +1 more source

Climate‐modulated accumulation and erosion of sediments in the Rodderberg crater basin for the last 439 ka (East Eifel Volcanic Field, Germany)

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Glacial/interglacial climate cycles since marine isotope stage (MIS) 12 influenced the discontinuous and 73 m‐long sediment record from the volcanic crater of Rodderberg in the East Eifel Volcanic Field, Germany. High‐resolution grain size and geochemical data have been valued by numerical dating techniques (radiocarbon and luminescence dating,
Bernd Zolitschka   +4 more
wiley   +1 more source

Paleontology of the Greenhorn Cyclothem (Cretaceous: Late Cenomanian to middle Turonian) at Black Mesa, northeastern Arizona

open access: yes, 1996
paleontology; Greenhorn Cyclothem; Cretaceous; Cenomanian; Turonian; Black Mesa ...
James Ian Kirkland
core  

Forest or tundra? How different vegetation reconstructions of Last Glacial landscapes in Europe may shape our perception of early human dispersal processes

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Regional variability and long‐term changes of past ecosystems likely had a strong impact on hunter–gatherer population dynamics, including the expansion of anatomically modern humans and the disappearance of Neanderthals. However, our understanding of these ecosystems remains limited, even when looking at large‐scale patterns, such as the ...
Oliver A. Kern   +5 more
wiley   +1 more source

A new tubalepid fish (Antiarcha, Placodermi) from the Middle Devonian of Huize, Yunnan, China

open access: yesSwiss Journal of Palaeontology
A new genus and species of tubalepid antiarch, Tongdulepis concavus gen. et sp. nov., is described from the Middle Devonian (Qujing Formation, late Eifelian) in Huize County, Qujing, northeastern Yunnan, China.
Yanchao Luo, Zhaohui Pan, Min Zhu
doaj   +1 more source

Fifty years of human paleontology: from prehistorical anthropology to paleoanthropology

open access: yesJournal of Biological Research - Bollettino della Società Italiana di Biologia Sperimentale, 2012
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openaire   +3 more sources

Let's Talk About Bone Cylinders. Taphonomy of Carnivores and Humans

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACTBone cylinders are a distinctive structure predominantly produced by durophagous carnivoran species during the consumption of long bones, in which the diaphyseal canal remains intact while both epiphyses are removed or consumed. This study evaluates the significance of this morphology, traditionally attributed to extant and extinct hyena ...
Darío Herranz‐Rodrigo
wiley   +1 more source

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