Endothermy, colloquially known as warm-bloodedness, was a major breakthrough in the history of life on Earth. It gave rise to the active lifestyle of birds and mammals. But how did it evolve? Research into this question has been ongoing for decades, though in the eyes of evolutionary physiologist Barry Gordon Lovegrove, the field has stagnated amidst competing single-cause hypotheses that all try to find that one killer explanation. In his wide-ranging Fires of Life, he brings together many disparate strands of research and gives an overview of our thinking on the evolution of endothermy in mammals and birds. Providing food for thought for students in this field, it also is a great overview for the general reader that stands out for its superbly accessible writing.
When I picked up this book and saw the subtitle, I couldn’t help but think: “What?? Sloths, maligned?” Just look at them! How is that face not adorable? Where the sloth’s timeline is concerned, I have been swept up in what is only a recent widespread appreciation of sloths. Clearly, this wasn’t always the case. Why else name an animal after a cardinal sin…
Mammoths and sabertooth cats are but two icons of an assemblage of large animals, or megafauna, that disappeared between roughly 50,000 to 12,000 years ago. As with all mass extinctions, several explanations have been put forward, but one man and his idea take centre stage in these discussions: Paul S. Martin’s overkill hypothesis. In End of the Megafauna, palaeomammalogist Ross D.E. MacPhee carefully scrutinises this idea, weighs up the arguments for and against, and explains its enduring allure. To quote Huxley, is this another example of “the slaying of a beautiful hypothesis by an ugly fact”?
When it comes to Ice Age fame, sabertooth cats are right up there with mammoths. And within the sabertooth cats, the best-known group is the genus Smilodon. Even if you have not heard that name, you will very likely have seen it depicted. Rather than a pop-science book, this edited collection brings together the who-is-who of sabertooth palaeontology to provide a thorough and technical overview of the current state of the field. And if I did not know any better, I would say that the research community has developed an almost unhealthy obsession with this cat’s large canine teeth.
Given that dinosaurs are no longer around, everything you think you know about what they look like comes from illustrations, models, movies, and merchandise. But how much of this is actually accurate, and how much of it is rather geared towards appealing to our sensibilities? Mark Witton is a man with a mission: to elevate the genre of palaeoartistry to one depicting scientifically accurate renditions, based on informed speculation and careful study of fossils and anatomy. Rather than a book that shows you how to draw a dinosaur, The Palaeoartist’s Handbook is a fantastically useful primer for both aficionados and budding artists into what actually can and should go into making good palaeoart.
It should have been a straightforward expedition. As a young career palaeontologist, Nick Pyenson found himself in the Atacama desert of Chile, tasked with mapping rock layers to establish a continuous chronology that would help dating fossils found in the area. Whale fossils, Pyenson’s speciality, are rarely found complete, which is true of most fossils. So what do you do when a colleague takes you to the construction site of a new highway and shows you not one, not several, but literally dozens of complete fossil whale skeletons? It represented a treasure trove for science, but retrieving the material before the highway constructors would move in was also a daunting, labour-intensive task that could make or break careers. I almost found myself standing next to Pyenson in the dusty clearing, the Chilean sun beating down on me as he faced this dilemma. This is just one of several immersive narratives recounted in Spying on Whales, which successfully blends travelogue and popular science.
In 2012, Titan Books published Dinosaur Art: The World’s Greatest Paleoart, showcasing the artwork of 10 famous palaeoartists. That book is still on my wishlist. Five years later they have followed this up with Dinosaur Art 2. The title may not be terribly imaginative, but, by Jove, the artwork is! The child in me got all giddy at the chance to review this book.