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Rapid screening of pottery lipid residue profile via comprehensive two-dimensional gas chromatography.
Anal Chim Acta
February 2025
Department of Archaeology and Anthropology, School of Humanities, University of Chinese Academy of Sciences, 100049, Beijing, China. Electronic address:
Background: Pottery lipid residue analysis has been extensively practiced worldwide as an important part of archaeometry studies, but in some cases, the complexity of archaeological residue cannot be fully revealed by one-dimensional gas chromatography (1D GC) separation. Although the development of comprehensive two-dimensional gas chromatography (GCxGC) has offered another way to achieve better separation and higher resolution, GCxGC separation has rarely been applied to pottery residue analysis. Clearly, GCxGC separation needs to be explored to examine and scrutinize the complexity of pottery lipid residue profile as well as rapid data treatment workflow.
View Article and Find Full Text PDFMetabolic skinflint or spendthrift? Insights into ground sloth integument and thermophysiology revealed by biophysical modeling and clumped isotope paleothermometry.
J Mamm Evol
January 2025
Department of Chemical and Biological Sciences, Youngstown State University, Youngstown, OH USA.
Unlabelled: Remains of megatheres have been known since the 18th -century and were among the first megafaunal vertebrates to be studied. While several examples of preserved integument show a thick coverage of fur for smaller ground sloths living in cold climates such as and , comparatively very little is known about megathere skin. Assuming a typical placental mammal metabolism, it was previously hypothesized that megatheres would have had little-to-no fur as they achieved giant body sizes.
View Article and Find Full Text PDFSynchrotron X-ray Fluorescence Microscopy Reveals Trace Elemental Indicators of Life History in Marsupial Teeth.
Biol Trace Elem Res
January 2025
School of Biological Sciences, Monash University, Melbourne, VIC, 3800, Australia.
As teeth develop, their mineralised composition is a bio-recorder of diet, environment, and growth. High-resolution elemental mapping provides a tool to reveal records of life history within teeth. The relative concentrations of a range of trace elements change between in utero development, birth, and weaning in eutherian mammals.
View Article and Find Full Text PDFat Sterkfontein did not consume substantial mammalian meat.
Science
January 2025
Department of Climate Geochemistry, Max Planck Institute for Chemistry, Mainz, Germany.
Incorporation of animal-based foods into early hominin diets has been hypothesized to be a major catalyst of many important evolutionary events, including brain expansion. However, direct evidence of the onset and evolution of animal resource consumption in hominins remains elusive. The nitrogen-15 to nitrogen-14 ratio of collagen provides trophic information about individuals in modern and geologically recent ecosystems (<200,000 years ago), but diagenetic loss of this organic matter precludes studies of greater age.
View Article and Find Full Text PDFThe smallest plant from the Lower Devonian of South China and the divergent life-history strategies in zosterophyllopsids.
Proc Biol Sci
January 2025
The Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing 100871, People's Republic of China.
Plants have evolved different life-history strategies to overcome limited amounts of available resources; however, when and how divergent strategies of sexual reproduction evolved in early land plants are not well understood. As one of the notable and vital components of early terrestrial vegetation, the Zosterophyllopsida and its type genus reached maximum species diversity during the Pragian (Early Devonian; 410.8-407.
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