نتایج جستجو برای: middle cretaceous
تعداد نتایج: 163403 فیلتر نتایج به سال:
Evans Shoal Gas Field comprises the wells Evans Shoal-1and Evans Shoal-2 .Our study aimed to determine the hydrocarbon potential of the main source rock in the study area and analyze the petroleum systems and guide future hydrocarbon exploration and development. The methods used encompass BasinMod techniques using mathematical methods. Analysis of the source rock potential helped to identify th...
Abstract The evolution of thermometabolism in pseudosuchians (Late Triassic to the present) remains a partly unsolved issue: extant taxa (crocodilians) are ectothermic, but clade was inferred ancestrally endothermic. Here we thermometabolic regime two neosuchian groups, Goniopholididae (Early Jurassic Late Cretaceous) and Dyrosauridae (middle Cretaceous late Eocene), close relatives crocodilian...
The fossil record of basal monocots (Acorales and Alismatales) extends back to the Cretaceous in the Northern Hemisphere. While many fossils were originally assigned to these basal groups, rigorous paleobotanical studies show many of them to be misidentified. Acarus fossils have been reliably reported from the Eocene while those of Alismatales extend back to the early Cretaceous. The fossil rec...
Insect herbivores are considered vulnerable to extinctions of their plant hosts. Previous studies of insect-damaged fossil leaves in the US Western Interior showed major plant and insect herbivore extinction at the Cretaceous-Palaeogene (K-T) boundary. Further, the regional plant-insect system remained depressed or ecologically unbalanced throughout the Palaeocene. Whereas Cretaceous floras had...
چکیده ندارد.
Rhynchocephalia, a once diverse clade of lizard-like reptiles, had nearly global distribution during much the Mesozoic. By Late Cretaceous rhynchocephalians underwent marked reduction in their diversity and biogeographic range, with sparse records only deeply nested taxa (e.g., Sphenodontinae) found Upper Cretaceous–Paleocene Patagonia Miocene–Recent New Zealand. Here we describe partial dentar...
s of the XIII Congress of the Russian Entomological Society, Krasnodar, 9–15 September 2007. Kuban’ State Agrarian University, Krasnodar, 306 [In Russian]. 317. Rasnitsyn AP (2007) The problem of species revisited. Paleontological Journal 41(11): 1151–1155. 318. Vasilenko DV, Rasnitsyn AP (2007) Fossil ovipositions of dragonflies: Review and interpretation. Paleontological Journal 41(11): 1156–...
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