Results 171 to 180 of about 34,573 (203)

Mammalian Dispersal at the Paleocene/Eocene Boundary

Science, 2002
A profound faunal reorganization occurred near the Paleocene/Eocene boundary, when several groups of mammals abruptly appeared on the Holarctic continents. To test the hypothesis that this event featured the dispersal of groups from Asia to North America and Europe, we used isotope stratigraphy, magnetostratigraphy, and quantitative biochronology to ...
Gabriel J, Bowen, William C, Clyde, Paul L, Koch, Suyin, Ting, John, Alroy, Takehisa, Tsubamoto, Yuanqing, Wang, Yuan, Wang   +7 more
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Upper Cretaceous–Paleocene magnetic stratigraphy at Gubbio, Italy IV. Upper Maastrichtian-Paleocene Magnetic Stratigraphy

Geological Society of America Bulletin, 1977
Pelagic limestones ranging in age from mid-Maastrichtian through Paleocene yield several well-defined magnetic polarity zones. These zones are tied to the planktic foraminiferal zonation at this site and are correlated with magnetic anomalies 26 through 31.
WILLIAM M. ROGGENTHEN, GIOVANNI NAPOLEONE   +1 more
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Paleocene Hyracothere from Polecat Bench Formation, Wyoming

Science, 1969
A lower jaw of an eohippus ( Hyracotherium cf. H. angustidens ) from late Paleocene strata in Wyoming has extended the geological record of fossil horses into pre-Eocene time and suggests that the order Perissodactyla had an origin earlier than that heretofore conjectured.
G L, Jepsen, M O, Woodburne
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The Paleocene primate radiation

2015
The plesiadapoid primates What events took place 65.5 mya at the beginning of the Cenozoic Era, which is colloquially known as “The Age of Mammals?” This is the Cretaceous/Tertiary (K/T) boundary, and it is now clear that most placental mammal orders originate after this boundary (O’Leary et al ., 2013).
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Correlation of Paleocene and Eocene Formations and Cretaceous-Paleocene Boundary in New Jersey

AAPG Bulletin, 1956
The Hornerstown formation is correlated with the Midway stage (Paleocene) of the Gulf Coast. The Vincentown formation is correlated with the Aquia formation (lower Eocene) of Maryland, and the Manasquan formation is correlated with the Claiborne stage (middle Eocene) of Alabama. The presence of a "middle greensand" unit between the Navesink (Cretaceous)
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Return to the Paleocene

2017
This chapter introduces the reader to philosophical and ethical inquiry by forging a distinction between descriptive and normative claims, as well as explanatory and justificatory arguments. It utilizes cases of paleontological discovery and climate communication to argue that “catastrophe reasoning” about climate change is not only politically but ...
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Paleocene amber from Sanshui Basin

Palaeoentomology
Globally, amber-rich strata are primarily found in major geological intervals, particularly the Aptian-Albian of the Early Cretaceous and the Eocene, both of which coincide with greenhouse climate conditions (Pearson et al., 2007; Katz et al., 2008; Delclòs et al., 2023).
MICHAEL SERIO, XIANG-BO SONG, HAN HU, CHEN-YANG CAI, DI-YING HUANG   +4 more
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Paleocene primates from western Canada

Canadian Journal of Earth Sciences, 1978
Plesiadapiform primates have been recovered from seven Paleocene sites in western Canada: (1) Roche Percée (Ravenscrag Formation) — Carpodaptes cygneus, Plesiadapis churchilli, Ignacius frugivorus, Micromomys vossae, n. sp.; (2) Police Point (Ravenscrag Formation) — Carpodaptes cf. cygneus, Plesiadapis sp., Ignacius sp.; (3) Calgary site 2E (Porcupine
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Volume calculation of Paleocene calcareous nannofossils

2008
During the past decades, volume calculation of extant calcareous nannoplankton has been performed in order to convert coccolith fluxes data into carbonate export productivity. The most useful and relative recent method to estimate the volume of coccoliths is described by Young & Ziveri (2000).
DE BERNARDI B, AGNINI, CLAUDIA
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Paleocene Epoch

2021
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