Results 21 to 30 of about 66,624 (345)

Life history of the most complete fossil primate skeleton: exploring growth models for Darwinius [PDF]

open access: yesRoyal Society Open Science, 2015
Darwinius is an adapoid primate from the Eocene of Germany, and its only known specimen represents the most complete fossil primate ever found. Its describers hypothesized a close relationship to Anthropoidea, and using a Saimiri model estimated its age ...
Sergi López-Torres   +2 more
doaj   +1 more source

Middle Eocene Rhodoliths from Tropical and Mid-Latitude Regions

open access: yesDiversity, 2020
During the greenhouse conditions prevailing in the early−middle Eocene, larger benthic foraminifers (LBF) spread out on carbonate platforms worldwide while rhodolith beds were scarcely represented.
Julio Aguirre   +7 more
doaj   +1 more source

New records from Banks Island expand the diversity of Eocene fishes from Canada’s western Arctic Greenhouse

open access: yesArctic Science, 2018
Eocene vertebrates from the Canadian Arctic, including sharks, bony fishes, turtles, crocodylians, birds, and mammals, have provided strong evidence for relatively warm ice-free conditions in the Arctic during the Eocene Greenhouse interval.
Michael D. Gottfried, Jaelyn J. Eberle
doaj   +1 more source

Distribution of sedimentary system multi-controlled by palaeo-geomorphology, water system and break during the deposition of Pinghu Formation, Baochu slope belt, Xihu Sag, East China Sea Shelf Basin

open access: yesShiyou shiyan dizhi, 2022
The Xihu Sag has huge exploration potential and is the main target for oil and gas exploration in the East China Sea Shelf Basin. At present, it has been known that the Xihu Sag has a transitional facies with sedimentary system mainly composed of tidal ...
Donghui JIANG   +3 more
doaj   +1 more source

Could changing ocean circulation have destabilized methane hydrate at the Paleocene/Eocene boundary? [PDF]

open access: yes, 2002
During the Paleocene-Eocene Thermal Maximum (PETM, ~55 Ma), marine and terrestrial carbon isotope values exhibit a negative shift of at least 2.5‰, indicative of massive destabilization of marine methane hydrates, releasing ~1100 gigatonnes of methane ...
Marotzke, J. ; https://orcid.org/   +3 more
core   +1 more source

ADDITIONAL GEOGRAPHIC RECORD OF TURBOROTALIA SEMICUNIALENSIS ANAN AROUND ARABIA [PDF]

open access: yesScience Heritage Journal
The Late Eocene planktic foraminiferal species Turborotalia semicunialensis Anan was recorded originally from the United Arab Emirates (UAE), and later in two localities around the Arabia in the Southern Tethys: India (east of UAE) and Egypt (west of UAE)
Haidar Salim Anan
doaj   +1 more source

The oldest diving anseriform bird from the late Eocene of Kazakhstan and the evolution of aquatic adaptations in the intertarsal joint of waterfowl [PDF]

open access: yesActa Palaeontologica Polonica, 2020
A specialized diving lifestyle has repeatedly evolved in several lineages of modern and fossil waterfowl (Anseriformes), with the oldest previously known representative being the late Oligocene Australian oxyurine ducks Pinpanetta.
Nikita Zelenkov
doaj   +1 more source

Mineralogy of anorthosite veins and host gabbros in the Kal-e-Kafi intrusive body (northeast of Anarak, Isfahan Province, Central Iran)

open access: yesJournal of Economic Geology, 2022
Introduction In the northeastern part of the Isfahan province and 65 km northeast of the Anarak city (Kal-e-Kafi area), an I-type granitoid pluton cross cut the Paleozoic metamorphic rocks and Eocene volcanic rocks. In the contact of this granitoid body
Hanan Salim   +2 more
doaj   +1 more source

The oldest representative of the bombyliid bee fly in the earliest Eocene French amber [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Eoconophorinadelfineae gen. et sp. nov., the oldest repre-sentative of the bee fly subfamily Bombyliinae, is described from the earliest Eocene Oise amber (France). It is charac-terized by the presence of mid tibial spurs, cylindrical ab-domen and
Aude Maheu, Andre Nel
doaj   +1 more source

Biostratigraphy of Eocene to Oligocene deep-water agglutinated foraminifers in the red clays from Site 767, Celebes Sea [PDF]

open access: yes, 1991
Deep-water agglutinated foraminifers were examined from reddish brown claystones comprising lithologic Unit 4 of Ocean Drilling Program Holes 767B and 767C. The biostratigraphy of deep-water agglutinated foraminifers in this unit indicates an Eocene to
Huang, Zehui   +5 more
core   +1 more source

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