Results 21 to 30 of about 10,988 (297)
A new tealliocaridid crustacean from the Late Carboniferous of North China and its biogeographic implications [PDF]
A new tealliocaridid eumalacostracan is described from the Late Carboniferous Tupo Formation (Ningxia, China). Laevitealliocaris xiaheyanensis gen. et sp. nov.
Qiang Yang +4 more
doaj +1 more source
The Río Loro Formation (early Paleogene, Tucumán Province, northwestern Argentina) has yielded several endemic vertebrates, including turtles, crocodiles, and mammals.
Luis Sebastián Saade +4 more
doaj +1 more source
Recent Advances and Challenges in Emerging Power Systems
Diminishing fossil fuels, the continually increasing demand for energy due to rapid urbanization, pollution caused by the increased generation of electricity using fossil fuels, the consequent environmental effect, and concerns about man-made global ...
Om P. Malik
doaj +1 more source
047_03: Up-close View of a Man Excavating a Fossil
This item features the black and white photo of a man excavating a fossil from a rocky wall. The man has a brush in his hand and is using it to wipe away rock particles from the fossil that is embedded in the rock.
Sternberg, George Fryer, 1883-1969
core
Generic revision of holocystitid blastozoans [PDF]
Brightonicystis is a valid genus characterised by nine or more oral plates, with two in the B and D ambulacra not reaching the inner mouth edge; five ambulacral facets shared by oral and facetal plates; two generations of smooth thecal plates with ...
CHRISTOPHER R.C. PAUL
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Several cephalopods from the Eocene have been recorded along the Pacific coast of North America. Each new record incorporates relevant knowledge to infer the paleobiology of this group. In this study, we report two nautiloids (subclass Nautiloidea) from
Priscila Morales-Ortega +3 more
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041_03: Man Working on Excavating a Fossil
This black and white photograph features a man working on removing a fossil from the rocky ground. The man is kneeling and is looking at something near his left hand. A pick axe is to his right. A paintbrush and a can are to his left.
Sternberg, George Fryer, 1883-1969
core
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Libro de Resúmenes de las XXXVII Jornadas Argentinas de Paleontología de Vertebrados
Libro de resúmenesde las XXXVII Jornadas Argentinas de Paleontología de Vertebrados, que tuvo lugar en la Ciudad de Corrientes (Corrientes, Argentina) del 14 al 17 de Mayo de 2024.
Comité Organizador de las XXXVII JAPV
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A new proterochampsid archosauriform from the Middle–Upper Triassic of Southern Brazil [PDF]
Proterochampsidae is a clade of carnivorous archosauriforms that lived during the Triassic and is characterized by an elongated rostrum with dorsally oriented external nares, and a unique pes configuration.
RODRIGO T. MÜLLER
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