Why I think the Jurassic/Cretaceous boundary is super important

Mass extinctions are insanely catastrophic, but important, events that punctuate the history of life on Earth. The Jurassic/Cretaceous boundary, around 145 million years ago, was originally thought of to represent a mass extinction, but has subsequently been ‘down-graded’ to a minor extinction event based on new discoveries. However, compared to other important stratigraphic boundaries, like… Read More »

Another clue to the origins of dinosaurs

This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1222 Often the early evolution and radiation of the first dinosaurs is an overlooked part of their tale, in favour of the more dramatic but arguably no less important tales of their later radiations and extinctions. It is actually a fairly poorly understood part of their evolution too, with the timing,… Read More »

The greatest mass extinction in the history of life

This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1204 In palaeontology, there are so many things more important than dinosaurs. For example, the study of large-scale patterns in the history of life on Earth, commonly known as macroevolution, is all about uncovering patterns of speciation and extinction. We are currently about to enter the sixth mass extinction within the… Read More »

How do the chemical ghosts of dinosaurs help their preservation?

This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1093 For some years now, Mary Schweitzer and her team have been researching the idea that organic molecules can be preserved for millions of years, specifically within dinosaurs. They have used a plethora of chemical and biotechnological techniques to demonstrate that, within animals like Tyrannosaurus rex, it is possible to find… Read More »

Where did all the mammoths go?

This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1037 Let’s go meta. Recently, ecologist extraordinaire Dr. Jacquelyn Gill (or is it Professor cos of that weird American system?) wrote a wonderful review article on the extinctions that affected many large mammal species during the last 50-10,000 years. This period is known as the Quaternary, and was a time when… Read More »