HOME >> BIOLOGY >> NEWS
New rare dinosaur tracksite found in northern Wyoming

BLOOMINGTON, Ind. -- The dinosaur record of the Middle Jurassic period (159-187 million years ago) is considered sparse worldwide, with relatively little known about dinosaurs from this period. However, recent discoveries of the most extensive Middle Jurassic dinosaur tracksites in North America are changing that.

In 1997, near the town of Shell in the Bighorn Basin of northern Wyoming, Indiana University geologist Erik Kvale found extensive dinosaur track-bearing deposits in 167 million-year-old rock in the Sundance Formation that was previously thought to have been totally underwater during the time when dinosaurs lived.

Now Kvale and collaborators report the presence of an even older, more extensive dinosaur track-bearing deposit in the Bighorn Basin. The scientists presented their results today (Nov. 16) at the annual convention of the Geological Society of America in Reno, Nev.

The new discovery is in a meter-thick layer of rock in the Gypsum Spring Formation. Estimated to be 170 million years old, this newly discovered layer preserves evidence that dinosaurs that inhabited this part of Wyoming may have been swimmers.

The Gypsum Spring Dinosaur Tracksite was first discovered in 1999 by Walter Parrs Jr., a New York City resident visiting a local ranch. It includes impressions made by land-dwelling two-legged dinosaurs that were small- to medium-sized, comparable to those found in the younger Sundance Formation. Some of the tracks were made by carnivorous dinosaurs called theropods.

Outcrops containing Gypsum Spring tracks occur sporadically over a 2000-square- kilometer area. In some areas the track-bearing surface consists entirely of grooves that appear to be the remains of scratch marks made by dinosaurs whose feet briefly touched a muddy bottom while they were swimming. The groove marks have a size and spacing consistent with terrestrial dinosaur tracks found elsewhere in the Gypsum Spring Formation.

Unlike the S
'"/>

Contact: Hal Kibbey
hkibbey@indiana.edu
812-855-0074
Indiana University
15-Nov-2000


Page: 1 2

Related biology news :

1. Computer imaging of Archeopteryx skull suggests this dinosaur-bird link could fly
2. Two dinosaurs from Africa give clues to continents split
3. A lost world: Two previously unknown dinosaurs discovered in Antarctica
4. Princeton paleontologist produces evidence for new theory on dinosaur extinction
5. Is this what killed the dinosaurs?
6. New study suggests missing link that explains how dinosaurs learned to fly
7. Seven-foot living dinosaur lurks in Oregon
8. Scientist says ostrich study confirms bird hands unlike those of dinosaurs
9. Cosmic impacts implicated in both the rise and fall of dinosaurs
10. New dinosaur related to Triceratops
11. New species clarifies bird-dinosaur link

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/24/2016)... 24, 2016 Ampronix facilitates superior patient care by providing unparalleled technology to ... display is the latest premium product recently added to the range of products distributed ... ... ... Imaging- LCD Medical Display- Ampronix News ...
(Date:5/16/2016)... 16, 2016   EyeLock LLC , a market ... opening of an IoT Center of Excellence in ... the development of embedded iris biometric applications. ... convenience and security with unmatched biometric accuracy, making it ... from DNA. EyeLock,s platform uses video technology to deliver ...
(Date:5/9/2016)... -- Elevay is currently known as the ... high net worth professionals seeking travel for work   ... there is still no substitute for a face-to-face meeting. ... deal with a firm handshake. This is why wealthy ... citizenship via investment programs like those offered by the ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... ... the release of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” ... and retention in this eBook by providing practical tips, tools, and strategies for ...
(Date:6/23/2016)... , June 23, 2016 /PRNewswire/ - FACIT has ... Ontario biotechnology company, Propellon Therapeutics Inc. ... and commercialization of a portfolio of first-in-class WDR5 ... targets such as WDR5 represent an exciting class ... in precision medicine for cancer patients. Substantial advances ...
(Date:6/23/2016)... ... June 23, 2016 , ... Charm Sciences, Inc. ... test has received AOAC Research Institute approval 061601. , “This is another AOAC-RI ... stated Bob Salter, Vice President of Regulatory and Industrial Affairs. “The Peel Plate ...
(Date:6/23/2016)... June 23, 2016   EpiBiome , a precision ... million in debt financing from Silicon Valley Bank (SVB). ... and to advance its drug development efforts, as well ... "SVB has been an incredible strategic partner ... a traditional bank would provide," said Dr. Aeron ...
Breaking Biology Technology:
Cached News: