The study focused on *Aratasaurus museunacionali*, a 10-foot-long bipedal dinosaur that died at roughly four years of age during the Cretaceous Period. Inside the fossil's vascular canals, the team identified cellular structures, heme remnants linked to hemoglobin, and collagen-related amino acids. While the scientists explicitly noted that no dinosaur DNA or intact proteins survived, the chemical traces provide extraordinary insights into molecular durability. These findings encourage researchers to continue investigating how biological information persists over tens of millions of years.
Key points
Researchers clarified that the survival of cell-like structures and heme signatures does…: Researchers clarified that the survival of cell-like structures and heme signatures does not mean intact proteins or dinosaur DNA survived.
The discovery demonstrates that specific molecular and mineral traces can withstand degra…: The discovery demonstrates that specific molecular and mineral traces can withstand degradation across deep geological time.
The findings encourage paleontologists to keep testing the limits of molecular preservati…: The findings encourage paleontologists to keep testing the limits of molecular preservation rather than assuming all biological traces vanish.
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Nov 2 : Scientists have discovered what they consider the strongest evidence yet of blood cells in a dinosaur fossil inside bone from the right leg of a medium-sized meat-eater that prowled Brazil some 115 million years ago during the Cretaceous Period.
The researchers identified numerous microscopic structures in bone from the species Aratasaurus museunacionali that appear to be fossilized red blood cells. They also detected chemical evidence related to a key component of these cells — an iron-containing biomolecule called heme that is associated with hemoglobin, the protein that gives blood its red color.
The evidence for blood cells and heme was found in vascular canals inside bones of an Aratasaurus individual, thought to be a juvenile or young adult about 4 years old when it died. The bipedal dinosaur would have measured about 10 feet (3.1 meters) long.
"We have not found a vial of dinosaur blood. What we are seeing is a mineral and molecular echo of ancient biology, and that is scientifically much more interesting," said Kliti Grice, an organic and isotope geochemist at Curtin University…
Wildlife rescue teams tracking nocturnal primates across Bangka island over a decade have confirmed a viable population remains despite heavy human encroachment. Encounters occurred largely in residential areas and plantations, revealing severe displacement while providing critical biological data. Conservationists now warn that long-term survival hinges on addressing major habitat loss driven by regional agriculture and resource extraction.
Researchers led by Curtin University examined the hind leg of an ancient Aratasaurus, uncovering preserved biological material inside ancient blood vessel channels. The discovery challenges established paleontological assumptions that organic compounds inevitably degrade within a million years. If confirmed, this molecular evidence could provide unprecedented insight into the metabolism, physical capabilities, and daily activity levels of predatory dinosaurs.
Scientific evaluations evaluating a central mental function face significant consistency challenges across different methodologies. The tools currently deployed across experimental settings yield conflicting outcomes rather than unified data. This lack of alignment complicates efforts to establish dependable baselines for understanding this vital function.