As the team continued the long hike in and out of Deep Eddy, we were rewarded with the discovery of more eggs within the quarry. Since it was 3-4 hrs of hiking in and out a day, we spent as much time as possible at the site, leading to some hikes where we were racing the sunset to get back to camp before dark…
But finding dino eggs has a way of keeping up team spirits.
The site itself continued to be a bruiser. The eggs were buried in incredibly hard mudstone, which meant we had to use serious tools during the excavation. Yet the eggshell was only a few millimeters thick so any impact on the fossils could be major. With this in mind, we kept our distance from the fossils, slowly chipping away at the mudstone and when discovering an egg, moving around it leaving it buried within the rock so the preparators can uncover the eggshell with microscopes in the lab.
Eventually we’d exposed a portion of at least six eggs, winding our way around a large block. Once we’d mapped all the eggs and fragments, preparations for the plaster jacket began.
Deep Eddy really did exceed our expectations. I had hoped for one or two more eggs, but it seems as if we have quite a few (at least seven) within our jacket. For now, she rests buried back into the hillside deep in the Cliffs of Insanity until we can raise enough funds to get a helicopter to lift her to the truck for transport to the museum. We can’t wait to see what what we did all that work for!
After splitting off from the CGQ crew, Deep Eddy team was excited to return to our best site from last year – a dinosaur egg site. We weren’t excited about the hike, which was as bad as we remembered… 3 miles up and down steep, mostly marine shale cliffs, and ankle breaking basalt boulder fields. The first day in was the most brutal, each team member packing in 50-70 lbs of gear including two rock saws, several gallons of fuel, some 50 liters of water, crack hammers, etc… When we finally sat down at the site it was a great moment.
Then of course, picking and shoveling the day away to clear the bone-bearing horizon for quarrying. The mudstone here is particularly hard, hence the saws, but we made good progress with the weathered upper surface. A few interesting things turned up right away here, including an unusual layer of plant material spanning a meter near the east side of the quarry and some evidence of roots on the (former) bank above the plant layer, indicating a tree or shrub once lived a happy life here in the Late Cretaceous.
On the second day one of our team members decided to brave the washed out jeep train with his truck, which was outfitted for the trail as opposed to our museum vehicles, which were decidedly not up to task. So for the next few days we were able to shave two miles total off the hike by catching a lift up the first big hill, and I’ve got to tell you we were really grateful for that!
The next few days the hiking and the quarrying continued. We found another complete egg, taking our total to three so far, and a lot of large egg fragments. the best is yet to come (we hope!) because we are just now moving into the area behind our complete eggs from last year’s digging.
As usual internet service is nonexistant out here, so look for the next post next week when we need to resupply! Until then, wake up to a Mussentuchit sunrise at our campsite. More soon…
Our full team of 11 stared out the Utah expedition with two days of picking and shoveling at the famed Crystal Geyser Quarry (CGQ), tomb of an estimated 300 Falcariusutahensis skeletons. I had worked the CGQ for five years during my graduate work and at the end of that time we had just begun hitting an area of the quarry where the youngest individual discovered (aged 1-2 yrs) was buried. That same area also housed some of the best preserved materials from the site (although not the holotype braincase!). In the years since, we had been working the alternate side of the hill periodically, but this year, with permission from the BLM, we reopened the original quarry in search of better specimens. This meant removing 1.5 meters of carbonate lenses above the bone bearing horizon. With just two days we managed to clear a 4 x 3 meter area for the CGQ team to excavate during the 2 week expedition.
CGQ is next to a beautiful, but dang hot, campsite in the Morrison Formation badlands. The dark maroon hills surrounding camp radiate the days heat back on the crew all night, meaning sometimes the temperature doesn’t drop into the 80s until early in the morning. Nonetheless, the sunsets are some of the most spectacular and there is a river nearby when the mid-day temps soar into the 100s.
After opening the site, the NCMNS team split into two, the crazy half of of the crew heading west across the Swell into an area of the desert we call the Cliffs of Insanity. Here we’ve been doing some extremely rugged prospecting in the Mussentuchit Member of the Cedar Mountain Formation for four years. Last year, a crew member found an extraordinary site and we needed some hardy souls willing to do the hike for a couple of weeks. Next up… meet the site we call Deep Eddy…
After a trying time in the Crevasse Canyon Formation, we had high hopes for more abundant fossils in the Menefee. This was our first time prospecting this strata but we had teamed up with Andy Heckert and his summer students from Appalachian State University to check out some sites that Andy had found several years ago. As usual our first day was inspiring but also a bit overwhelming. Looking out over the expanse of Menefee exposure, it felt like one could spend a lifetime out here prospecting…
Unlike the Crevasse Canyon, we found bone all over the place on day one out here, but much of it was encased in nodules. In most cases, mineral growth had invaded the bone, changing it’s structure. We pulled a partial leg in decent condition before heading up section to find better preserved materials.
Turned out looking in the younger part of the formation was a good idea. The next day we found a fruitful basin with a lot of exposed bone, a decent turtle preserved in a sandstone cliff face, and not too far from there, a couple of good sites with multiple dinosaur bones.
We spent about 10 days in the Menefee prospecting and surface collecting from various sites. Again the abundance of tracks, both dinosaur, croc, and turtle kept us fairly busy. We were fortunate to find a natural cast of an enormous croc track on the under surface of a sandstone lens bearing pad and scale impressions. It turned out to be a tricky but quick collect as we undercut the block, capped it with plaster, and let it drop to the ground (thankfully, not on any members of the team…) into a rimmed depression we devised.
We had our fair share of injuries and illnesses this trip with altitude sickness, falls, and even kidney stones and a lot of long, back-to-back days of wandering around solo prospecting, which leads to some interesting bouts of creativity.
While Lisa was inventing camp mascots, I tried my hand at a desert snowman…
Although our fossil finds were few and far between, there was an abundance of wildlife discoveries including several close encounters with rattlesnakes!
At the end of our season in the Menefee, we headed further south to explore the northernmost exposures of the Moreno Hill. Here we found nearly nothing for days aside from some microsites and a single iguanodontipodid track. Still, we had found enough promising localities this year and last to return in 2018 for a fruitful season. Even if it does involve a week of jackhammering through a sandstone cliff to get at the bones.
Long days and poor cellular service prevented us from blogging in real time during our first expedition of 2017 to Upper Cretaceous formations in northwest New Mexico. We were able to keep up on Twitter though, so for the expedition play-by-play, check out #NMdinodig17 @expeditionlive.
Still… in the few days after Montana and before heading out to Utah this summer, I thought it’d be a good time to catch you up on how things went.
Last year we kicked off our pilot expedition to the Moreno Hill and Crevasse Canyon formations, strata that span a key, underrepresented interval in the fossil record of dinosaur evolution on the North American continent. Finding fossils in the Moreno Hill Formation isn’t easy and we spent two weeks, prospecting 8-10 miles a day, with little to show for it last season. We did find a productive basin near the end of our trip with fossilized turtles, a large croc osteoderm, a lot of random dinosaur bone, and one intriguing locality with over 40 ornithischian vertebrae exposed on the surface (Elk Run).
This year we hoped to open excavations at Elk Run, but our permits were not approved in time so… instead of excavating there, we continued to prospect for productive new areas in northwest New Mexico. We were particularly interested in the Coniacian-Santonian aged Crevasse Canyon Formation and spent about four days hunting around in fairly good exposures. The first two nights we woke up to snow (some of us with our tents collapsed onto our faces…), but soon enough things began to warm up.
We could find only a single published record of dinosaur bone recovered from the Crevasse Canyon–a partial duckbill dinosaur jaw bone. Thus we knew there was potential, but also, that the Crevasse Canyon would make us work for it. We didn’t have a great deal of luck this year but we begin finding some dinosaur bone on the last couple of days, and ultimately one nice limb bone that continued into the hill.
We also found a great leaf locality, and a ton of dinosaur tracks, which are all over the Crevasse Canyon. I literally pitched my tent on a track horizon in camp and tracks could be found just about everywhere we wandered.
We wrapped up this part of the trip by revisiting a cool ornithopod dinosaur track site I found last year. This time we brought geology undergraduates from Wake Tech, as part of our National Science Foundation GEOPATH award. Here we documented the site, took photographs to create a photogrammetric model, and evaluated the track morphology and number of trackways preserved. We’ll be presenting this research at the Geological Society of America’s annual meeting in Seattle.
After wrapping up in the Crevasse Canyon we packed up camp and headed north to hunt around in the Menefee Formation.
After three weeks, we closed our active quarries, left our main field area, and headed somewhere new to search for promising areas further south. If our primary areas seems remote, this new place was really isolated. Our base camp was approximately 50 miles from anything with no cellular service, which is why we had to cancel our last Skype session with the museum and why, this blog comes to you after the end of our trip.
To reach camp we drove up a wash that cut into the badlands forming a steep walled canyon in certain areas. The road is prone to flash flooding, making our drive in and out of camp an ever-interesting “who knows?” And we had to drive over long stretches of road that would turn to impassibly slick muck with just a bit of rain. Thus, we tried to just stay put and prospect near camp, hoping it wouldn’t rain the day of or the day before our scheduled departure.
Temperatures here were more extreme than our previous camp and the team struggled to prospect all day in the sweltering heat. Despite our best efforts, and despite ten boots on the ground for several days, we found only a few scraps of fossil bone here and not enough to warrant an excavation. Some folks might view this as a failure, but it’s just part of the process for paleontologists. Someone has to expend the effort and the funds to go to places where there might be good fossils and search. Sometimes that means you find amazing things and others will come back to those same areas for decades, sometimes it means you’ve just “cleared” the area for future scientists. I’d say we pretty much “cleared” these badlands. Fortunately, we found bone in some other areas nearby to hear (about a two-hour drive) and it’s likely we’ll return and set up camp a bit closer to the promising area in future years.
There was some amazing stratigraphy here and a great marker bed full of marine oysters. so if you tired of hiking for hours on end in the heat finding absolutely no fossil dinosaur bone, you could sit and search for pycnodontid oysters or Ptychodus (hybodontiform) shark teeth. Or bear prints….
All in all, it’s been a great, and long field season for us with trips to New Mexico, Montana, and a few places in Utah between April and August of 2016 and we’ve made some great discoveries. Check in with our Zanno Lab news page, our research blog, and our Twitter feed for real time research and preparation updates until next year’s field season.
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.