About 68 million years ago, a pregnant Tyrannosaurus rex died in ancient Montana. Her remains might provide clues about how to identify male and female theropods, or bipedal meat-eating dinosaurs, a ...

Researchers have confirmed that a 68-million-year-old fossil found in Montana came from a pregnant Tyrannosaurus Rex. This not only will make it easier for other scientists to sex different fossils, ...

A team of scientists led by Jingmai O'Connor from the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences, reported the first occurrence of medullary bone in ...

It's a girl … and she's pregnant! Paleontologists at North Carolina State University have determined that a 68 million year-old Tyrannosaurus Rex fossil from Montana is that of a young female, and ...

Paleontologists have a rare opportunity to study a pregnant T. rex. If you're happy and you know it, clap your... wait... Share on Facebook (opens in a new window ...

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Researchers examining a giant thighbone unearthed in Montana reveal that it belonged to a pregnant Tyrannosaurus rex that lived 68 million years ago. The femur contained a gender-specific tissue, and ...

A Tyrannosaurus rex dinosaur that died 68 million years ago has provided some of the strongest evidence yet that birds are the closest-living relatives of dinosaurs, scientists said Thursday. Soft ...

Scientists at North Carolina State University and the North Carolina Museum of Natural Sciences officially confirmed a 68 million-year-old Tyrannosaurus rex was a female dinosaur living in present-day ...

INVESTIGATION of avian medullary bone in this laboratory led to the observation of a substance therein which gave a very strong positive reaction with the periodic acid–Schiff technique. In some ...

When paleontologists Jack Horner and Bob Makela named a large hadrosaur that had been found among eggshells and nests in 1979, they called it Maisaura, the “good mother reptile.” The name suggested ...

Please provide your email address to receive an email when new articles are posted on . Adults with medullary thyroid cancer who develop osteolytic bone metastases are more likely to experience ...