Thescelosaurus

But when fossil collector Michael Hammer came upon a small dinosaur called Thescelosaurus in South Dakota in 1993, he decided to take a closer look at what he usually would have just chiseled away.

A Real Heart Of Stone 2008

Birds and mammals -- and, it seems, Thescelosaurus -- have a more efficient four-chamber design, which delivers oxygen-rich blood to the muscles and provides the energy to make us warm-blooded so we don't have to bask in the sun to get moving in the morning.

A Real Heart Of Stone 2008

Its latest member is _Thescelosaurus_, a contemporary of

Dinosaurs With Special Reference to the American Museum Collections William Diller Matthew 1900

"The hypothesis that this Thescelosaurus has a preserved heart was controversial, and therefore, we reexamined it using higher-resolution computed tomography, paleohistological examination, X-ray diffraction analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy."

USATODAY.com News 2011

Thescelosaurus ("the marvelous lizard") was a medium-sized (13 feet long), plant-eating, two-legged dinosaur that lived about 65.5 million years ago.

USATODAY.com News 2011

Naturwissenschaften journal, paleontologists led by Timothy Cleland of North Carolina State University in Raleigh, report on a Thescelosaurus dinosaur fossil "heart", first described in 2000 within a specimen nicknamed "Willo" on display at the North Carolina Museum of Natural Sciences.

USATODAY.com News 2011

"A three-dimensional, iron-cemented structure found in the anterior thoracic cavity of articulated Thescelosaurus skeletal remains was hypothesized to be the fossilized remains of the animal's four-chambered heart," said the study.

USATODAY.com News 2011