New megapredator of the Cretaceous announced by Lindsay Zanno in the Daily Planet theater. Super awesome, check it out! Collaboration with our friends and colleagues at The Field Museum of Natural History in Chicago. Lindsay’s coauthor is Peter Makovicky.
Special thanks to museum volunteer Dick Webb! Visitors can now see the specimens as they are being prepared in the air abrasion chamber. The previous commercial-grade unit kept workers from breathing the harmful dust created by the process, but it also kept visitors from seeing what we were doing in there. That’s because the box was all metal except for the glass viewing window on the technician’s side. With a collaborative design effort by Dick Webb, Lisa Herzog and the folks in the Exhibits department here at the museum (who also built the box) we now have a fantastic custom built unit that allows viewing from both sides of the abrasion chamber.
Stop by and see what’s going on in the lab! And see what’s going on INSIDE the micro-abrasion chamber for a change.
Tags: Bryan Patterson, Elmer S. Riggs, Field Museum, John Conrad Hansen
Norwegian-born artist and engraver John Conrad Hansen (1869-1952) drew and painted a series of magnificent restorations of fossil vertebrates during his fourteen year career at Chicago’s Field Museum. Many of his line drawings were eventually published in the scientific literature, especially in papers authored by paleontologists Elmer S. Riggs, Bryan Patterson and Paul McGrew. Others, including an unknown number of beautiful oil paintings, were intended to add a dash of form and color to the fossil vertebrate displays in the museum’s historic Hall 38, the now defunct hall of vertebrate paleontology. Unfortunately, Hansen’s paintings were uninstalled in 1994 when the museum renovated its paleontology exhibits, and, to the best of my knowledge, none are currently on display there.
I remember seeing some of these paintings in the museum when I visited in my youth. I vividly recall a display that explained how fossils are formed, and how they are found and collected by paleontologists. This display featured a memorable series of six Hansen paintings illustrating how an animal carcass enters the fossil record. One of those paintings is featured below.
Hansen’s work was much admired by the Field Museum’s paleontology staff. Riggs noted that “Mr. Hansen … has a fine discriminating sense of form in his drawings.” Patterson was even more effusive: “I may say without exaggeration that [Hansen] has no superior and few peers among either contemporary or former illustrators of fossil vertebrate remains.”
A very small sample of Hansen’s work is reproduced here, courtesy of the Field Museum.
Tags: Bill Simpson, CMFPE, Elmer S. Riggs, Field Museum, Killick Aike, Psilopterus, Rio Gallegos, Santa Cruz beds, Sergio Vizcaino
I recently spent a week at Chicago’s Field Museum looking through historic photographs and fossils from the Captain Marshall Field Paleontological Expedition to Argentina and Bolivia, 1922-1927. Together with Sergio Vizcaino, an Argentine paleontologist who specializes in fossil mammals, and Bill Simpson, Collection Manager, I looked at every fossil collected by Elmer S. Riggs & his colleagues in the Santa Cruz beds of southern Patagonia. We found many gems, including field number 1001, the first fossil collected by Riggs and recorded in his field notes.
Sergio also took a picture of me with Elmer’s first fossil.
Tags: Cretaceous, Crystal Geyser Quarry, dino dig, Dinosaur, dinosaurs, expedition, feathered dinosaur, fossils, paleontology, utah
The end of the field season is usually bittersweet. On the one hand, we’ve been gone from our homes for 6 weeks in harsh conditions with not much rest and even fewer showers. We are down to only 4 crew members, all with bent backs and sore knees. Camp food has started to get old and we are longing for our own beds. The sunsets are gorgeous, but it’s been too long since we’ve seen anything green.
On the other hand, we do this because we love the rock, the bone it produces, and the questions those bones raise and may eventually answer. There is still so much to be learned about the mid-Cretaceous dinosaur fauna of North America and its potential interchange with dinosaurs from Asia, as well as the evolution of the feathered dinosaurs, such as our favorite therizinosaur, Falcarius. More data is needed and that’s why we’re out here. It’s hard work, but well worth it.
When we left the Mussentuchit locality 3 weeks ago, we had a wide variety of specimens, including various dinosaurs, turtles, and crocodiles. And as we leave the Crystal Geyser Quarry now, we take with us 170 numbered specimens (some just single bones, some as jackets with multiple bones), from a huge sauropod ischium to a teeny-tiny caudal vertebra (both pictured below). We’ve found bones not previously documented for Falcarius and there’s always the possibility that some of what we’ve found may belong to a previously unknown species. We’ve mapped the location of each and every bone in hopes that their position may tell us what happened to these animals and how their remains came to rest in this place. With all of this new data, we can depart contented.
And so we head home with our trucks “severely overloaded” with fossils. There will be plenty of work to do back at the museum, but our work in the mid-Cretaceous of Utah is over until next year. We are ready to go home.
Posted: July 31, 2013 by Susan Drymala in Feathered Dino Death Pit Expedition 2012, Field Blog, Uncategorized
Tags: Cretaceous, Crystal Geyser Quarry, dino dig, Dinosaur, dinosaurs, expedition, feathered dinosaur, fossils, hunting for dinos, outdoors, paleontology, utah
Tags: Cretaceous, Crystal Geyser Quarry, dino dig, Dinosaur, dinosaurs, feathered dinosaur, fossils, paleontology, utah
It’s week 5 of our summer expedition and the crew is pretty worn down. We are down to the last holdovers: two NCSU graduate students, a single NCSU undergraduate, and Asst. Director, Paul Brinkman at the helm.
Despite the wear, there is something uplifting about digging at the Crystal Geyser Quarry. Here ones tireless work is constantly rewarded, with new surprises lurking under every chunk of rock removed. We’ve been finding great bone here, some of the best I have seen at the site in a decade. Our first complete fibula (lower leg bone), plenty of new femora (upper leg bones) for our study on Falcarius growth and other treats, such as claws and teeth.
I am also fairly certain I uncovered several bits of skull that were previously unknown for this animal, which is terribly exciting although, with much of it encased in a nodule, confirmation of my field ID awaits preparation back in the lab.
More of our new sauropod has turned up and we are excited to be able to show off these bones being prepared at the museum. There is something awe-inspiring about sauropod bones that isn’t hard to understand. The sheer size of each individual bone is breathtaking.
Learning to excavate fossilized bones when they are preserved in a jumbled mass is one of the paleontologists great field skills, and one of the things the students have come to learn. This photo gives you an idea of how tricky it can be to think out a step by step plan to removing bones like Pick Up Stixs from the quarry face.