Outreach

Dinosaur documentaries have been a great way to communicate the science of paleontology and dinosaurs to a wide audience. Recently, Walking with Dinosaurs has returned with a new version since its original inception in 1999. This time, two Ichnoplanet students make an appearance in one of the episodes!

Jack Milligan and Kaitlin Lindblad feature as part of the field crew during the fifth episode of the new series, titled “The Journey North.” The episode centres on a megaherd of the ceratopsian Pachyrhinosaurus lakustai, as they migrate across the forests, floodplains and rivers of paleonorthern northwestern Alberta during the Campanian stage of the late Cretaceous period. On their journey, they face many dangers, such as infighting among their own, fearsome predators such as the tyrannosaur Gorgosaurus, and sudden flash floods.

Pictures from the Pipestone Creek Bonebed during filming of Walking with Dinosaurs. From left to right: an overhead view of a dense area of Pachyrhinosaurus bones, including limb bones, ribs, and skull material; A grid map created by the field crew prior to collecting the bones; a shot of two of the field crew being filmed by the camera crew. Photos by Jack Milligan, 2023

Jack and Kailtin were invited by Dr. Emily Bamforth, curator of the Philip J. Currie Dinosaur Museum in Wembley, Alberta, to partake in filming of the series, where they excavated bones of Pachyrhinosaurus from the famous Pipestone Creek Bonebed, which has produced thousands of bones since the 1970’s. Fossils that were found during the filming were small juvenile bones, a rib with a pathology, and large frill bones. All these bones were mapped and observed using both traditional and modern methods, including a grid square and 3D scanning software, respectively.

A segment of the episode shows Dr. Bamforth going to a tyrannosaur track site to take silicone moulds of the tracks to study their morphology and discuss the possible tracemaker. This site was published in PLOS One, “The dinosaur tracks of Tyrants Aisle: An Upper Cretaceous ichnofauna from Unit 4 of the Wapiti Formation (upper Campanian), Alberta, Canada” by Enriquez et al., 2022.

Walking with Dinosaurs is available now to buy on physical media and on streaming. Check out the official trailer and a behind-the-scenes featurette featuring Jack!

Listen to CBC Saskatoon Morning and CBC Saskatchewan The Morning Edition radio interviews with both Jack and Kaitlin talking about their experience being involved in the production of the show.

Written by Jack Milligan

Dr. Buatois was featured in a new Nature article, where he commented on recent work done by the Palaeoburrows Project based at the Federal University of Rio Grande do Sul in Porto Alegre, Brazil.

In conjunction with the University of the Extreme South of Santa Catarina (UNESC) in Criciúma, Brazil, paleontologists and archaeologists have been studying a series of massive caves that have had multiple architects and inhabitants during the Pleistocene. The caves are found within a consolidated eolian sandstone unit of the early late Cretaceous Botucatu Formation (100 Ma). This makes the sandstone soft enough to burrow through and consolidated enough that the caves wouldn’t collapse.

A giant palaeoburrow in southern Brazil, known as the Armadillo’s Den. Image credit to Rafael Lange for Nature https://www.nature.com/articles/d41586-025-00216-x

The walls of the caves preserve large claw-like markings, as well as inscriptions and graffiti by ancient and modern humans, respectively. The large claw-like marks on the walls of the cave point to the original inhabitants of the cave, proposed to be giant ground sloths. They would construct these burrows for multiple reasons, including potentially to sharpen their claws and to seek refuge from megafaunal predators.

These would be not only the largest palaeoburrows, but the largest trace fossils known so far. From this research, a novel ichnogenera and two novel ichnospecies were named, Megaichnus minor and Megaichnus major. These palaeoburrows are so far known from Brazil and Argentina, and are attributed to giant ground sloths like Scelidotherium and Glossotherium. Work is ongoing to refine the classification scheme for palaeoburrows, conservation, and opportunities for international collaboration on future studies.

Paleoartist Renato Pereira Lopes’ reconstruction of several extinct ground sloths and armadillos and schematic representations of the dimensions of some caves found in South America. Artist credit to Renato Pereira Lopes as seen in Nature https://www.nature.com/articles/d41586-025-00216-x

Paleoartist reconstruction of extinct giant ground sloths and armadillos by Renato Pereira Lopes.

You can read the original study in Ichnos and the news feature in Nature.

Written by Jack Milligan

A diverse and dynamic research group, leaving their own tracks around the globe.

Category: Outreach

Walking with Dinosaurs (2025) featuring Ichnoplanet students

Giant ground sloths made massive paleoburrows in Brazil