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Jon Tennant

Jon began university life as a geologist, followed by a treacherous leap into the life sciences. He spent several years at Imperial College London, investigating the extinction and biodiversity patterns of Mesozoic tetrapods – anything with four legs or flippers – to discover whether or not there is evidence for a ‘hidden’ mass extinction 145 million years ago. Alongside this, Jon researched the origins and evolution of ‘dwarf’ crocodiles called atoposaurids. Prior to this, there was a brief interlude were Jon was immersed in the world of science policy and communication, which greatly shaped his views on the broader role that science can play, and in particular, the current ‘open’ debate. Jon tragically passed away in 2020.

Horse poop, frozen rhinos, and crocodile skulls. All is well at the Royal Veterinary College.

Following on from the adventures in the Natural History Museum in London, checking out some of their extant crocs and the material of Theriosuchus pusillus, a dwarf croc from the Upper Jurassic of England, I made a trip to the Royal Veterinary College just north of London to see what they had on offer. John Hutchinson was kind enough to sort things out at short notice, and I actually got to check out what’s in John’s freezer, and see the mighty Freezersaurus! Entombed in icy death, John had everything from turkeys, elephant feet, a whole manner of ‘primitive’ birds (such as ratites), bits of rhino, and a miscellaneous melange of fleshy pseudopodia. All for science. As well as this, there were some living birds, including emus, for live biomechanical testing.

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Crocodiles! They’re everywhere!

The Natural History Museum in London contains some of the most diverse vertebrate Palaeontological collections in the world, in terms of number of species. As part of my PhD, I have to learn detailed crocodile anatomy, mostly skeletal (osteology), to help identify and describe the particular group I’ll be researching into. The Zoology Department would normally be a great target to go and learn this, but for reasons undisclosed, they were unavailable for research visits. Fortunately, Lorna Steel, a curator of the fossil vertebrates, informed me that they had some extant croc material I could come and play with! Seeing as Imperial College is next door to the NHM, I trotted off to have a peak.

Croc 1 – Guesses as to species below! (click for larger image) Copyright: Natural History Museum