Results 41 to 50 of about 34,326 (336)

New data from the first discovered paleoparadoxiid (Desmostylia) specimen shed light into the morphological variation of the genus Neoparadoxia

open access: yesScientific Reports, 2022
Desmostylia is an extinct clade of marine mammals with two major sub-clades, Desmostylidae and Paleoparadoxiidae, known from Oligocene to Miocene strata of the North Pacific coastline.
Kumiko Matsui   +2 more
doaj   +1 more source

Paleobiology: A Tooth for a Tooth [PDF]

open access: yesCurrent Biology, 2017
Many vertebrates replace teeth through shedding of the functional tooth. New analyses of a fossil fish demonstrate that shedding involved tooth resorption, a primitive feature in bony fishes, but absent in sharks and their relatives.
openaire   +2 more sources

The case for dynamic subsidence of the U.S. east coast since the Eocene [PDF]

open access: yes, 2008
The dynamic subsidence of the United States east coast is addressed using the discrepancy between regional and global estimates of sea level, elevation of paleoshorelines, and adjoint models of mantle convection that assimilate plate motions and seismic ...
Gurnis, Michael   +3 more
core   +1 more source

Faunal Assemblages From Lower Bed I (Oldupai Gorge, Tanzania)

open access: yesFrontiers in Ecology and Evolution, 2022
Palaeobiological and archeological excavations at the site of Ewass Oldupa, found in the western Plio-Pleistocene rift basin of Oldupai Gorge (also Olduvai Gorge), Tanzania, revealed rich fossiliferous levels and the earliest remains of human activity at
Pamela Akuku   +12 more
doaj   +1 more source

The paleobiological record of photosynthesis [PDF]

open access: yesPhotosynthesis Research, 2010
Fossil evidence of photosynthesis, documented in Precambrian sediments by microbially laminated stromatolites, cyanobacterial microscopic fossils, and carbon isotopic data consistent with the presence of Rubisco-mediated CO2-fixation, extends from the present to ~3,500 million years ago. Such data, however, do not resolve time of origin of O2-producing
openaire   +4 more sources

Paleobiology and paleobiogeography of sclerorhynchid sawfishes (Chondrichthyes, Batomorphii)

open access: yesSpanish Journal of Palaeontology, 2021
Sclerorhynchid sawfishes are a monophyletic group of Cretaceous selachians. They resemble modern sawfishes in the outer morphology and by having a hypertrophic rostral cartilage armed with lateral rows of spines.
J. Kriwet, K. Kussius
semanticscholar   +1 more source

Evidence of strong stabilizing effects on the evolution of boreoeutherian (Mammalia) dental proportions. [PDF]

open access: yes, 2019
The dentition is an extremely important organ in mammals with variation in timing and sequence of eruption, crown morphology, and tooth size enabling a range of behavioral, dietary, and functional adaptations across the class.
Archibald J. D.   +26 more
core   +6 more sources

Paleobiological Perspectives on the Early Upper Paleolithic Human Transition in the Northwestern Old World

open access: yesBulletins et Mémoires de la Société d’Anthropologie de Paris, 2001
The emerging consensus that the emergence of modern humans in the northwestern Old World involved temporally and geographically varying degrees of admixture between Neandertals and early modern humans within the early Upper Paleolithic provides the ...
Erik Trinkaus
doaj   +1 more source

Paleobiology and philosophy [PDF]

open access: yesBiology & Philosophy, 2019
I offer four ways of distinguishing paleobiology from neontology, and from this develop a sketch of the philosophy of paleobiology. I then situate and describe the papers in the special issue Paleobiology and Philosophy, and reflect on the value and prospects of paleontology-focused philosophy.
openaire   +2 more sources

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