Twenty-three Montana communities are sharing more than $5 million of grant funding for 26 historic preservation projects to improve historical sites, historical societies and history museums, the Montana Department of
Analysis of what’s known about the dinosaur leads to conclusion there were 2.5 billion over time.
How many Tyrannosaurus rexes roamed North America during the Cretaceous period?
That’s a question Charles Marshall pestered his paleontologist colleagues with for years until he finally teamed up with his students to find an answer.
What the team found, to be published this week in the journal
Science, is that about 20,000 adult T. rexes probably lived at any one time, give or take a factor of 10, which is in the ballpark of what most of his colleagues guessed.
What few paleontologists had fully grasped, he said, including himself, is that this means that some 2.5 billion lived and died over the approximately 2 1/2 million years the dinosaur walked the earth.
Paleontologists relied on a new method of estimating extinct populations to peg the number of Tyrannosaurus rexes that terrorized Earth throughout the Cretaceous period at 2.5 billion.
A cast of a T. rex skeleton on display outside the UC Museum of Paleontology at the University of California, Berkeley. The original, a nearly complete skeleton excavated in 1990 from the badlands of eastern Montana, is at the Museum of the Rockies in Bozeman, Montana. (Keegan Houser, UC Berkeley)
(CN) A breakthrough new study has satisfied the long unanswered question of how many T. Rexes lived on Earth in their time, finding that approximately 2.5 billion roamed the Earth over the span of 2½ million years.
Allosaurus Was a Massive Flesh Grazer and Possible Cannibal howstuffworks.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from howstuffworks.com Daily Mail and Mail on Sunday newspapers.
Visit The Museum Of The Rockies
As part of Montanaâs Dinosaur Trail, the museum has a large collection of fossilized dinosaur skeletons discovered in the state. Exhibits on the not-as-distant past showcase the lives of Native Americans and European pioneers, including homesteading on the Living History Farm.
Two large galleries with temporary exhibitions, typically photography and art, round out the offerings.
Pro Tip: Allow two to three hours for your visit to this ADA-compliant museum. The museumâs planetarium show is included in your entrance. Seats fill quickly.
Check This Computer Museum Off Your Must-See List
Near Montana State University, the American Computer and Robotics Museum is filled to the brim. The museum traces the history of computing over 4,000 years from cuneiform tablets to early computers that took up entire rooms to prototype personal computers. They have an exhibit on the American, British, and Polish cryptanalysts who cracked the Enigma Code (wh