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Aratasaurus

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Chemical Analysis Confirms Heme in 115-Million-Year-Old Dinosaur Bone

A study published in the Proceedings of the National Academy of Sciences reports the first chemical confirmation of heme, a key component of hemoglobin, within the fossilized vascular canals of a 115-million-year-old dinosaur. Researchers from Curtin University analyzed a juvenile Aratasaurus museunacionali leg bone recovered from Brazil in 2008. The findings suggest that specific mineralization processes, particularly involving manganese oxide, may have preserved delicate cellular structures and biomolecules for over a hundred million years, challenging previous assumptions about the limits of molecular preservation in fossils.

via New York Post|

#aratasaurus #curtin-university #fossil-preservation

science4 hours ago•4 min saved

Chemical and Microscopic Evidence Suggests Red Blood Cells Preserved in 115-Million-Year-Old Dinosaur Bone

Researchers report finding the strongest evidence yet of red blood cells in a 115-million-year-old dinosaur fossil, combining microscopic imaging with chemical detection of heme in bone samples from Brazil.

via CNN|

#aratasaurus #dinosaur-biology #fossil-preservation

science12 hours ago•2 min saved

Chemical Analysis Confirms Heme in 115-Million-Year-Old Dinosaur Bone

Researchers at Curtin University have identified fossilized red blood cells and heme molecules in the leg bones of a 115-million-year-old Aratasaurus museunacionali from Brazil. Published in the Proceedings of the National Academy of Sciences, the study uses chemical and microscopic evidence to confirm these structures are biological remnants, not contamination. The preservation is attributed to rapid burial in a low-oxygen, microbe-rich environment where manganese compounds stabilized the tissue. This finding challenges previous assumptions that soft tissues and blood molecules cannot survive deep time, suggesting museum collections may hold untapped molecular data.

via ScienceAlert|

#aratasaurus #biochemistry #curtin-university

science18 hours ago•1 min saved

Chemical tests confirm heme in 115-million-year-old dinosaur bone

Scientists have identified fossilized red blood cells and heme molecules in the bones of a 115-million-year-old dinosaur from Brazil, challenging assumptions about the preservation of biological materials over deep time.

via The Guardian|

#aratasaurus #biomolecules #dinosaur-fossils

science19 hours ago

Chemical Analysis Confirms Heme in 115-Million-Year-Old Dinosaur Bones

An international research team led by Kliti Grice of Curtin University has confirmed the presence of intact heme molecules and mineralized red blood cell structures in the limb bones of a juvenile Aratasaurus museunacionali. The fossil, dating back 115 million years to the Early Cretaceous period in northeastern Brazil, was discovered in 2008 and is housed at the National Museum of Brazil. Published in the Proceedings of the National Academy of Sciences, the study represents the first chemical identification of oxygen-carrying blood compounds in dinosaur fossils. The preservation is attributed to rapid burial in a low-oxygen, microbe-rich environment, where the manganese compound hausmannite stabilized the cellular structures. While the discovery challenges previous assumptions about the degradation of biomolecules over deep time, it does not imply the survival of DNA or large proteins, which remain absent from such ancient specimens.

via Yahoo|

#aratasaurus #biomolecules #dinosaur-fossils