Results 21 to 30 of about 345,840 (384)
Permafrost in the Cretaceous supergreenhouse
Nature Communications, 2022 AbstractEarth’s climate during the last 4.6 billion years has changed repeatedly between cold (icehouse) and warm (greenhouse) conditions. The hottest conditions (supergreenhouse) are widely assumed to have lacked an active cryosphere. Here we show that during the archetypal supergreenhouse Cretaceous Earth, an active cryosphere with permafrost existed
Dr Juan Pedro Rodríguez López +5 more
openaire +4 more sources
LEROYI: A NEW TETHYAN LAGENID BENTHIC FORAMINIFERAL GENUS [PDF]
Earth Sciences Pakistan, 2020 Leroyi n. gen., is introduced to include the Cretaceous-Neogene (predominantly Maastrichtian-Eocene) benthic Lagenid foraminiferids from many Tethyan localities that characterized by its slightly coiled early portion of the smooth test, later slightly ...
Haidar Salim Anan
doaj +1 more source
Acta Palaeontologica Polonica, 2023 Numerous dromaeosaurid taxa recovered from the Upper Cretaceous strata of the Gobi Desert raise questions over niche partitioning among closely related species.
ŁUKASZ CZEPIŃSKI
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Iridescent plumage in a juvenile dromaeosaurid theropod dinosaur
Acta Palaeontologica Polonica, 2023 Colour reconstructions have provided new insights into the lives of dinosaurs and other extinct animals, by predicting colouration patterns from fossilised pigment-bearing organelles called melanosomes.
ANGUS D. CROUDACE +4 more
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The Cretaceous Flora of America [PDF]
Nature, 1877 NEAR the close of his very interesting lecture “On the Tropical Forests of Hampshire,” published in NATURE (vol. xv. pp. 229, 258, 279) Mr. J. S. Gardner says:—“I have great doubts, however, as to the correct position of many of the foreign so-called cretaceous beds.
J. S. Gardner
+8 more sources
Foraminiferal morphogroups of the Early–Middle Cretaceous succession in northeastern Rafsanjan and their significance as palaeoenvironmental bioindicators [PDF]
Journal of Stratigraphy and Sedimentology ResearchesForaminiferal morphogroups reveal their responses to palaeoenvironmental and palaeoecological changes. The foraminiferal morphogroups of the early-mid Cretaceous in northeastern Rafsanjan have been investigated with an interest in palaeoenvironmental ...
Tayebeh Ahmadi
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Geochemistry, Geophysics, Geosystems, 2023 The Early Cretaceous is an important time of transition in Earth history, marked by a succession of oceanic anoxic events and carbon cycle perturbations that drove changes on land and in the ocean.
Marina B. Suarez +8 more
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Marine tethysuchian crocodyliform from the ?Aptian-Albian (Lower Cretaceous) of the Isle of Wight, UK [PDF]
, 2014 A marine tethysuchian crocodyliform from the Isle of Wight, most likely from the Upper Greensand Formation (upper Albian, Lower Cretaceous), is described.
Foffa, D +5 more
core +1 more source
New Late Cretaceous zhelestid mammal from the Bayanshiree Formation, Mongolia [PDF]
Acta Palaeontologica PolonicaNumerous exquisitely preserved mammal fossils unearthed from Upper Cretaceous strata in the Gobi Desert of Mongolia have played a key role in understanding Mesozoic mammalian evolution.
TSUKASA OKOSHI +10 more
doaj +1 more source