Last time, I talked about the ankylosaurids of China, and today we’re talking about Gondwanan ankylosaurs. Gondwana basically refers to the continents of today’s southern hemisphere; when the supercontinent Pangaea broke apart, it split into two large continents – Laurasia in the north, and Gondwana in the south. Gondwana includes South America, Africa, Australia, and Antarctica, and, somewhat nonintuitively, India (India kind of beelined into Asia from Australia and that’s why we have the Himalayas). Almost all of the ankylosaurs we know about are from the Laurasian continents, which means that the few found in Gondwana are phylogenetically and biogeographically interesting: do they represent southern branches of the ankylosaur family tree, or new migrations into Gondwana from Laurasia? Let’s take a closer look:
This summer, the Royal Ontario Museum unveiled a brand-new exhibit all about the dinosaurs of Gondwana. When Pangaea rifted apart during the Triassic, it split into two continents – Laurasia, represented by the modern northern continents of North America, Europe, and Asia, and Gondwana, represented by the modern southern continents of South America, Africa, Australia, and Antarctica, plus India, Madagascar, and New Zealand. The dinosaurs and other extinct terrestrial vertebrates of Gondwana differed from their northern neighbours, and we don’t often see them in exhibitions in North America.
Ultimate Dinosaurs: Giants of Gondwana features lots of interesting and sometimes obscure dinosaurs, some really great artwork, and some neat technological things (of which I am sometimes skeptical, but can wholeheartedly endorse here).
There. I said it. I liked Dinosaur Revolution.
Several weeks ago, I talked about the Antarctic dinosaur Cryolophosaurus. As Phil and Eva’s Antarctic adventure winds down, I thought it was high time to write a little bit about another Antarctic dinosaur, Glacialisaurus.
This is not Glacialisaurus, but it is still awesome. Ice sculpture competitions like Ice on Whyte are one of the winter benefits of living in the frozen tundra of Edmonton. And this year, there were several teams from China participating! Continue reading