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Latest Robert R. Reisz Stories

Eocasea martini
2014-04-17 08:58:57

Brett Smith for redOrbit.com - Your Universe Online The fossil of a newly-discovered species called Eocasea martini is being described as a sort of missing link in the transition from carnivorous to herbivorous behavior in land animals. According to a report in the open access journal PLOS ONE, the fossil could eventually serve as evidence that caseids, the largest land animals around 300 million years ago, slowly evolved from being carnivores to subsisting on a diet solely of plants....

Steak-Knife Teeth First Appeared In Land Animals 300M Years Ago
2014-02-07 12:27:27

Lee Rannals for redOrbit.com - Your Universe Online A carnivorous dinosaur that roamed the Earth nearly 300 million years ago was the first terrestrial vertebrate to develop “steak-knife” teeth. The Dimetrodon was a dinosaur that walked on land between 298 million and 272 million years ago, and the latest study, published in Nature Communications, shows the ancient reptile wasn’t afraid to bite off more than it could chew. Researchers found that Dimetrodon was the first...

Oldest Dino Embryo Boneyard Provides New Insight for Researchers
2013-04-10 19:01:01

Peter Suciu for redOrbit.com — Your Universe Online While these never actually walked the Earth, and didn´t fully develop or hatch, a trove of dinosaur embryos could give researchers rare insight into their development. Paleontologists working in China recently unearthed what could be the earliest collection of fossilized dinosaur embryos to date, and it has provided the researchers with a new opportunity to study ongoing growth patterns and development of the prehistoric...

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2010-10-06 09:50:00

A new species of dinosaur discovered in Arizona suggests dinosaurs did not spread throughout the world by overpowering other species, but by taking advantage of a natural catastrophe that wiped out their competitors. The new dinosaur, named Sarahsaurus, was studied by an international team of scientists, including Robert R. Reisz, professor and chair of biology at the University of Toronto Mississauga, Tim Rowe, professor of paleontology at the University of Texas at Austin's Jackson School...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.