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9:30 AM

Come out and help us dig up some history!

This meetup has an rsvp deadline of Thursday, April 18th at 11:45pm. Directions to the dig will be sent out via a meetup message on Friday, April 19th to those that have rsvp’d by the deadline.


*This meetup is STRICTLY for age 9 and up ONLY. Children under age 9 will not be allowed on the dig site.*

Please see the FoF calendar for an alternate meetup for parents and their younger kids.


The Arlington Archosaur Site (AAS) occurs within the Cretaceous (95-100 Million year old) sediments of the Woodbine Formation in Arlington, TX. The sediments of the Woodbine Formation preserve an ancient delta plain swamp environment and coastal ecosystem (see attachments).

The Arlington Archosaur Site (AAS) has proven to be an important site in that numerous fossils of a primitive hadrosauroid called Protohadros, several theropods (carnivorous dinos), a new turtle, a new species of lungfish and a new giant super-predator croc (& her babies) have been discovered. These fossils are rare in North America and represent a unique chance to study the evolution of Mid-Cretaceous coastal ecosystems. Our duck billed dino, Protohadros in particular is a transitional species, or “missing link”, in the evolution of iguanodonts into hadrosaurs. In fact all of our fossil animals are dynamic examples of evolution in action! Of equal interest, numerous coprolites representing nearly every animal within the ecosystem have been recovered. It is also an interesting site as it is among the few major dinosaur excavations to occur within an urban setting (DFW metroplex). No private fossil collecting is allowed, all of the fossils found at the site are returned to UTA campus for curation and study.

We take adult diggers and work most weekends. We provide the tools and training, its fairly simple work, but tedious and requires some heavy lifting (not appropriate for children under 10). We give free geologic tours of the AAS to 1st time diggers to help them understand what we have found and why.

For more info:

The AAS webpage:

The AAS Facebook fanpage (I post dig dates and info here):

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