World’s oldest dinosaur discovery in Tanzania?

This video is about dinosaurs.

From Discover magazine:

Scientists Discover the Oldest Dinosaur Yet…Maybe

By Breanna Draxler

December 6, 2012 11:13 am

Paleontologists in Tanzania have unearthed fossils from a new species of prehistoric reptile. The bones may have belonged to the world’s oldest dinosaur—or they may be from a reptile that kind of looks like a dinosaur.

Currently, the oldest confirmed dinosaur fossil dates back 230 million years. By this point in time, dinosaurs had grown in size and population to dominate the Earth. But when exactly did dinosaurs first enter the prehistoric picture, and how long did it take them to rise to such prominence? Paleontologists have narrowed the timeline down to the early or middle Triassic—the period of 20 million years before the oldest known dinosaur came to be.  The newfound species, dubbed Nyasasaurus parringtoni, predates this fossil by another 10 to 15 million years, and falls right in the middle of paleontologists’ projected timeframe for the first appearance of dinosaurs.

With only one upper arm bone and six vertebrae to work with, the researchers were able to glean a surprising amount of information about the newly discovered two-legged creature. It measured between 6 and 10 feet from head to tail, and only weighed between 45 and 130 pounds. Certain indicators in the fossils are unique to dinosaurs, namely an “elongated deltopectoral crest”—the attachment necessary to support strong chest muscles. Without more material the researchers cannot definitively declare the creature a dinosaur, rather than a silesaurid, the dinosaurs’ closest relative. Still, scientists say the fossils are the best available evidence of the presence of dinosaurs in the middle Triassic period, and regardless of how it ends up being classified, the new species offers a valuable view of the lives of early reptiles.

Image courtesy of Sterling J. Nesbitt, et. al.

14 thoughts on “World’s oldest dinosaur discovery in Tanzania?

  1. Pingback: Dinosaur discovery in Mexico | Dear Kitty. Some blog

  2. Pingback: Fossil snake had legs | Dear Kitty. Some blog

  3. Pingback: World’s oldest dinosaur discovery in Tanzania? « Philip's Blog

  4. Pingback: About those dinosaurs … It all started with “Fantasia” « Serendipity

  5. Pingback: Pre-dinosaur mesosaurs’ live birth | Dear Kitty. Some blog

  6. Pingback: Dinosaurs, why so many big species? | Dear Kitty. Some blog

  7. Pingback: Norway: first dinosaur fossil found | Dear Kitty. Some blog

  8. Pingback: New Nothosaurus fossil in museum | Dear Kitty. Some blog

  9. Pingback: New ankylosaur species discovered | Dear Kitty. Some blog

  10. Pingback: ‘Butterfly-headed’ pterosaurs discovery in Brazil | Dear Kitty. Some blog

  11. Pingback: Triassic dinosaurs avoided the tropics | Dear Kitty. Some blog

  12. Pingback: Dinosaur family tree, new theory | Dear Kitty. Some blog

  13. Pingback: Moabosaurus dinosaur discovery in Utah, USA | Dear Kitty. Some blog

  14. Pingback: Oldest dinosaur eggs were like turtle eggs | Dear Kitty. Some blog

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.