Our most difficult prospecting spots in this area are up in the Cliffs of Insanity, our term for a very steep section of outcrop that rises 1000 feet above Last Chance desert. These beds are only accessible from the bottom in most areas and so it takes a fairly intense hike (long and sometimes treacherous) just to get to the prospecting area, let alone the hike up and down the steep hillsides in search of fossil bone. The past few days we’ve had teams hunting for fossils in the Cliffs of Insanity and collecting from some sites. We’ve also borne witness to the start of the rains and an end to the intense heat and dryness of the past two weeks. Although, the temperature drop is welcome, the storms have been intense, and dangerous for those of us up in the cliffs when the thunderheads roll in each afternoon. It’s made for some scrambling out of the back country and a few muddy drives, not to mention some mucky crew members.
Meanwhile, the bone at Last Chance quarry continues, and continues to dive deeper. We pulled out around 100 bones from this site and the overburden continued to rise as we went further into the hill. We pulled our biggest jacket containing several dozen elements on the last day. It was about a mile hike to the truck with this 250 lb jacket and the crew did well bringing her down the slopes safely. We also had a bit of fun with summer movie madness, since the jacket reminded us of Slimer from Ghostbusters. We didn’t manage to clear the entire quarry this year, and several croc bones turned up near the back wall, so we have at least two individuals here and will have to reopen the site next season.
With our Cliffs of Insanity prospecting finished for the year and our two quarries closed down, we are headed south to hunt around in some new areas for the final week of our expedition. Stay tuned for some amazing landscapes and hopefully, some great finds.
It’s been hot and extraordinarily dry in Utah the past two weeks as we’ve worked to collect all the bones from our two quarries. We’ve done a fair bit of prospecting too and from the look of the team’s clothes, folks are wearing thin.
Yesterday we finished up at the new orodromine site (MiniTroll) and the students remediated the quarry to look like the original hillside. This morning they packed up and headed to the airport for a flight home. Our second team arrived today and they’ll stay with us for the final two weeks (well most of them anyway). We’ve more work to do at the Last Chance quarry. The ones are diving steeply into the site and thus the backwall gets higher and higher. Presently the fossils are resting under about 7 feet of hillside. Most of which we have removed, but alas, since they are still getting deeper, that number is likely to go higher. We’ve decided to put in a few more days at the site before heading off to prospect further south and we’ll hit some very difficult to access outcrop here before we leave to ensure we haven’t missed any amazing finds up on the Cliffs of Insanity. All in all, it should be a stellar time.
With time on our prospecting trip running out, we hit the hills early yesterday. The ridge we hiked down had some great exposure and the area turned out to be littered with fossil bone. Around every corner we found piles of Triceratops bone many of which had just been resting on the surface degrading for a long time. Sometimes I’d stumble across a nice bone on the surface, but a little digging into the hill revealed it was just a lone bone, resting out in the Montana sunlight.
Early in the morning I spotted a foot long thin ridge of bone protruding from a hillside well below where I was hiking. I made my way down to check it out and noticed the distinctive triangular bones on the margin of a frill just peeking out. Holding my breath a bit, I started peeling sediment off the bone, which continued improving in condition deeper into the hill. It was a good sign! Clearly there was a large portion of the frill diving into the overburden here. Since we only have a prospecting permit, and could never take out a whole Triceratops skull without an excavation permit, I chose to stop digging there, consolidate and cap what was exposed. It could be that this piece of frill is not attached to anything at all. OR it could be that the entire skull is waiting just beneath the mudstone layers of that hillside. We’ll only find out when we come back to excavate what we’ve found.
More hiking brought more sites, including these huge eroding bones on the top of a butte that could be spotted from 100 meters away. There were at least five bones exposed here and this is a site that will merit further excavating.
At then end of the ridge there were some beautiful views including a broken down cabin in the valley. But alas, this is clearly then end of this hike, time to head back to the hills behind to search for more bone.
Our second day of prospecting was spectacular as we hiked amongst a rainbow of wildflowers. There was no shortage of bone either. We spent a couple of hours collecting from a micro site (a sediment layer loaded with tiny bones and teeth). Here we collected fossils of many different species including croc osteoderms and teeth, different turtles, gar scales, and meat and plant eating dinosaurs.
Later we hiked further into the badlands and found several promising sites including at least two horned dinosaur localities, a possible theropod site, and tons of other sites we didn’t have enough time to dig into.
At the end of the day we made some friends including this awesome salamander!
It was a hot one yesterday and looks to be even hotter today! Still waiting for something special to turn up at the surface but who knows what’s hiding just under the surface at he sites we already found.
After two weeks of prospecting and finding only a handful of localities in New Mexico, it was a joy to spend a day poking around the bountiful Hell Creek. Of course in New Mexico anything we found was likely to be new, here in the Hell Creek much more of the ancient fauna is already described.
Mary Schweitzer and I found bone within the first half hour and by the end of the day had run across bone at almost ever turn. I spent the morning checking out a fair weather turtle.
The afternoon we dug on a duckbill dinosaur site that Mary found with good success. I hauled a vert up the hill, but with only a surface permit, the rest will have to wait!
On our last days in New Mexico, we hit another couple of promising basins, with little luck. Most of what we found was alive…
So we collected all the materials we could from our surface permits, took in the beautiful views, and packed up and headed north to prospect the Crevasse Canyon Formation before heading back to Raleigh.
Our short time hunting in the Crevasse Canyon Formation turned up a few promising things, including some beautiful dinosaur tracks. Unfortunately these are two big to fit in our gear, so we’ll just have to bring equipment to get some 3D models of these beauties next year!
Now we’ll take everything back to the lab and begin the long process of cleaning and preparing the fossils we recovered. Next year we’ll have some serious excavating to do on the sites we found, particularly Elk Run, from where we picked up a ton of bone from several individuals. Stay tuned to find out more on what we found on our trip to New Mexico this year and visit for more info on our next trip to Montana in June!
Once we’d found a basin with bone, we hit the area with a fine tooth comb, spending a week scouring the hillsides for more sites. In total we turned up a few fragmentary theropod bones, a very large upper leg bone in sandstone, some crocodile scutes, a few turtles, plant fossils, and one hillside with 42 vertebrae, limb and pelvic bones on the surface, and chunks of a very large, unusual looking turtle. Next year we’ll go back to several of these hills and open quarries. With any luck even better bones are still resting inside the hill.