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Oxygen isotope fractionation between human phosphate and water revisited.
The oxygen isotope composition of human phosphatic tissues (delta18OP) has great potential for reconstructing climate and population migration, but this technique has not been applied to early humanExpand
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Latitudinal temperature gradient during the Cretaceous Upper Campanian–Middle Maastrichtian: y18O record of continental vertebrates
Latitudinal variations in model biogenic apatite d18O values were calculated using fractionation equations of vertebrates and weighted rainfall y18O values along with mean annual air temperaturesExpand
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Calibration of the phosphate δ18O thermometer with carbonate–water oxygen isotope fractionation equations
Abstract There are significant ambiguities concerning the accuracy of oxygen isotope fractionation equations commonly used to retrieve aquatic paleotemperatures from the δ 18 O value of phosphaticExpand
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Oxygen isotopes from biogenic apatites suggest widespread endothermy in Cretaceous dinosaurs
The much debated question of dinosaur thermophysiology has not yet been conclusively solved despite numerous attempts. We used the temperature-dependent oxygen isotope fractionation betweenExpand
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High-precision determination of 18O/16O ratios of silver phosphate by EA-pyrolysis-IRMS continuous flow technique.
A high-precision, and rapid on-line method for oxygen isotope analysis of silver phosphate is presented. The technique uses high-temperature elemental analyzer (EA)-pyrolysis interfaced in continuousExpand
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Oxygen isotope fractionation between apatite-bound carbonate and water determined from controlled experiments with synthetic apatites precipitated at 10–37 °C
The oxygen isotope fractionation between the structural carbonate of inorganically precipitated hydroxyapatite (HAP) and water was determined in the range 10–37 °C. Values of 1000 ln α(CO32- –H2O)Expand
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Regulation of Body Temperature by Some Mesozoic Marine Reptiles
Warm-Blooded Reptiles? Existing reptiles are not thought to be endothermic, but what about extinct species? Three large extinct swimming reptiles, the ichthyosaurs, plesiosaurs, and mosasaurs, wereExpand
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Carbon and oxygen isotope fractionations between aragonite and calcite of shells from modern molluscs
Carbon and oxygen isotope fractionations between calcite and aragonite were investigated by analyzing marine gastropods and bivalves that lived under temperate to tropical climates. Species thatExpand
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What does the oxygen isotope composition of rodent teeth record
Oxygen isotope compositions of tooth phosphate (δ18Op) were measured in 107 samples defined on the basis of teeth obtained from 375 specimens of extant rodents. These rodents were sampled fromExpand
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Global climate perturbations during the Permo-Triassic mass extinctions recorded by continental tetrapods from South Africa
Several studies of the marine sedimentary record have documented the evolution of global climate during the Permo-Triassic mass extinction. By contrast, the continental records have been lessExpand
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