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Frozen in time
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Frozen in time

by Lucy VanSwearingen

Gallery: Weekly ChallengePosted April 18, 201182 views8 comments
I was fortunate to collect this track on private land with the local geologist in Glen Rose, TX. It is illegal to collect fossils from public lands and in the Dinosaur Valley State Park--You have to have a Texas State Permit.

This track was made by a three-toed, sharp-clawed, two-legged meat-eating dinosaur called s theropod. Most of these prints (which are typically 15 to 25 inches long) are thought to have been made by Acrocanthosaurus, a 20-30 foot long carnosaur whose bones have been found in nearby areas.

these tracks are found in the Paluxy riverbed in the Upper Cretaceous (~ 110 million years old)
I am taking some liberty, as this track was in limey mud probably in a tidal flat or lagoon.

By the way...I am a geologist, who happened to be in Glen Rose watching my stallion win third place in the SW Reining Horse Futurity.

Now, aren't you glad you looked? As Stan knows, I like to photograph "the unusual"!

Comments

8 comments
Comment posted by Nancy Lea Sandy on April 18, 2011 at 4:20 PM
Congrat on your stallions success. A very interesting and unusual image.
Registered on January 24, 2011, 576 Posts, 6942 Comments
Comment posted by RL Potts on April 18, 2011 at 4:44 PM
It would be neat to have a lizard perched on this for scale.
Registered on November 24, 2003, 188 Posts, 985 Comments
Comment posted by Bill Chambers on April 18, 2011 at 4:45 PM
Very neat Lucy, and a very pretty image with the black BG. I used to live in Uvalde, TX and traveled to Big Bend National & State Parks once or twice a month - I used to think that must be geologist Heaven!! I saw so many interesting rocks and fossils - I'm no geologist by any means, but you couldn't help but be amazed by their beauty. Never gathered any because it was against the law, but enjoyed the heck out of them!
Registered on April 10, 2005, 753 Posts, 21216 Comments
Comment posted by Bill Pelzmann on April 18, 2011 at 5:53 PM
Nice track. If you don't know what you are looking for, it's easy to overlook.

Come on up to Colorado, if you want to photograph dino tracks in REAL sandstone. :wavey:
Registered on January 26, 2005, 27 Posts, 265 Comments
Comment posted by Lucy VanSwearingen on April 18, 2011 at 6:30 PM
Bill, The tracks in Glen Rose appear as individual trails. They are actually hard to miss (once they are pointed out). It was probably the limey clay with sediment covering them swiftly. It is possible that they were actually migrating. The theropods were joined by our old friend the brontosaurus and his relations. But, their tracks just look like elephant footprints walking along the shore. Not very photogenic.

Don't worry, this was a flagstone in the river. I did not chip it out.

I would LOVE to come out west and look at your dino tracks! I did fieldwork in Zion and Bryce (Utah) and loved it! So I never got near your dino tracks. I hear they are spectacular! One day........

And Robert, I did not even think of a lizard. What a terrific idea! :jump: Maybe I'll hold one hostage and get him to stay still on my rock.

Thanks for looking! :wavey:
Registered on May 23, 2009, 800 Posts, 2042 Comments
Comment posted by Luis Argerich on April 18, 2011 at 9:50 PM
Great photo Lucy this is a fantasic find!

I would love to go out and take photos with a geologist, I like geology but have no formal education.

Registered on December 22, 2009, 91 Posts, 1349 Comments
Comment posted by Eva McDermott on April 19, 2011 at 8:35 PM
This is wonderful Lucy! Definitely the "Sands of Time"! Fossils always fascinate me especially when you see them in person.
Registered on January 4, 2009, 1015 Posts, 13229 Comments
Comment posted by Varina Patel on April 25, 2011 at 9:30 AM
That's pretty darn cool, Lucy! Definitely unusual - and very nicely photographed.
Registered on August 22, 2008, 45 Posts, 1578 Comments