Results 31 to 40 of about 31,099 (302)

Comparative bone microstructure of three archosauromorphs from the Carnian, Late Triassic Chañares Formation of Argentina [PDF]

Acta Palaeontologica Polonica, 2020
The Chañares Formation exhibits one of the most important archosauriform records of early Carnian ecosystems. Here we present new data on the palaeohistology of Chañares archosauriforms and provide new insights into their paleobiology, as well as ...
Jordi Alexis Garcia Marsà, Federico L. Agnolín, Fernando E. Novas   +2 more
doaj   +1 more source

Tubular microfossils from ∼2.8 to 2.7Ga-old lacustrine deposits of South Africa: A sign for early origin of eukaryotes? [PDF]

, 2016
Unequivocal evidence for Archean eukaryotic life has been long sought for and is a matter of lively debate. In the absence of unambiguous fossils this debate has focused on biogeochemical signatures and molecular phylogenies.
Altermann, Wladyslaw, Franchi, Ian, Kaźmierczak, Józef, Kremer, Barbara   +3 more
core   +2 more sources

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

Scientific 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, Ana M. Valenzuela-Toro, Nicholas D. Pyenson   +2 more
doaj   +1 more source

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

Frontiers 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, Pamela Akuku, Palmira Saladié, Palmira Saladié, Palmira Saladié, Abdallah Mohamed, Aloyce Mwambwiga, Aloyce Mwambwiga, Pastory Bushozi, Julio Mercader, Julio Mercader, Julio Mercader, Julio Mercader   +12 more
doaj   +1 more source

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

, 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, Liu, Lijun, Müller, R. Dietmar, Spasojević, Sonja   +3 more
core   +1 more source

LATE PLEISTOCENE LAST OCCURRENCES OF THE NARROW-NOSED RHINOCEROS STEPHANORHINUS HEMITOECHUS (MAMMALIA, PERISSODACTYLA) IN ITALY

Rivista Italiana di Paleontologia e Stratigrafia, 2017
Several taxa belonging to the so called megafauna became extinct during the late Quaternary in Eurasia. The extinction chronology of the narrow-nosed rhinoceros, Stephanorhinus hemitoechus, in Europe is still uncertain and only estimated around 45 ka.
LUCA PANDOLFI, PAOLO BOSCATO, JACOPO CREZZINI, MAURIZIO GATTA, ADRIANA MORONI, MARIO ROLFO, ANTONIO TAGLIACOZZO   +6 more
doaj   +1 more source

Declining Volatility, a General Property of Disparate Systems: From Fossils, to Stocks, to the Stars

, 2013
There may be structural principles pertaining to the general behavior of systems that lead to similarities in a variety of different contexts. Classic examples include the descriptive power of fractals, the importance of surface area to volume ...
ADRAIN, ANG, BAKER, BAMBACH, BENTON, BONNER, BRIGGS, BROMHAM, BROOKS, CERVANTES-COTA, CORNETTE, CUCCIATI, ELDREDGE, ELDREDGE, ELDREDGE, FELLER, FOOTE, GALILEO, GEHRELS, GILINSKY, GILINSKY, GOODMAN, GOULD, GOULD, GOULD, GOULD, GOULD, GOULD, GOULD, GOULD, JABLONSKI, JABLONSKI, JABLONSKI, JOHNSON, JUST, KARACESKI, KAUFMAN, KIRCHNER, KRUG, KURTÉN, LIEBERMAN, LIEBERMAN, LIEBERMAN, LIEBERMAN, LIEBERMAN, LILY, LINEWEAVER, LLOYD, LO, MacARTHUR, MADAU, MANDELBROT, McGOWAN, McSHEA, MELOTT, MELOTT, MELOTT, MILLER, MOSKOWITZ, NIKLAS, PATTERSON, PETERS, PETTINI, PLOTNICK, RAUP, RAUP, RAUP, SEPKOSKI, STANLEY, STANLEY, VRBA, VRBA, WILKINSON   +72 more
core   +1 more source

Decoupling of morphological disparity and taxic diversity during the adaptive radiation of anomodont therapsids [PDF]

, 2013
Adaptive radiations are central to macroevolutionary theory. Whether triggered by acquisition of new traits or ecological opportunities arising from mass extinctions, it is debated whether adaptive radiations are marked by initial expansion of taxic ...
Anderson MJ, Benton MJ, Cox CB, Crompton AW, Fröbisch J, McKinney ML, Smith RMH, Upchurch P   +7 more
core   +1 more source

Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications [PDF]

Acta Palaeontologica Polonica
Sphenodontians are a group of vertebrates with a vast taxonomic diversity and worldwide distribution of their fossils. Although they have been the subject of many studies on their phylogeny and morphology, those focused on their paleobiology are still ...
SOL A. CAVASIN, IGNACIO A. CERDA, SEBASTIÁN APESTEGUÍA   +2 more
doaj   +1 more source

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

, 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., Archibald J. D., Bergqvist L. P., Butler P. M., Chaffee R. G., Clark J., Clemens W. A., Cuvier G., Evans A. R., Fortelius M., Gingerich P. D., Harmon L., Janis C. M., Janis C. M., Kay R. F., Kurtén B., Lucas P. W., Lucas P. W., Monson T. A., Nowak R. N., Orme D., Qiu Z. X., R Core Team, Revelle W., Tomiya S., Ungar P. S., Ungar P. S.   +26 more
core   +5 more sources