palaeontology

Book review – Lamarck’s Revenge: How Epigenetics Is Revolutionizing Our Understanding of Evolution’s Past and Present

As one of several intellectuals who wrote about evolution before Darwin, time has not been kind to the French naturalist Jean-Baptiste Lamarck (1744-1829). Reviled during his lifetime by the influential Cuvier, after his death he became best remembered, and ultimately ridiculed, for the idea that characters acquired during an organism’s lifetime are passed on to its offspring. With the rise of the modern field of epigenetics, some of his ideas are making a comeback, albeit modified and adapted for the 21st Century. Palaeontologist and astrobiologist Peter Ward would even like to go so far as to restore some honour to his name and consider epigenetics a neo-Lamarckian process.

lamarck's revenge (more…)

Advertisements

Book review – End of the Megafauna: The Fate of the World’s Hugest, Fiercest, and Strangest Animals

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”?

End of the Megafauna (more…)

Book review – The Art of Animal Anatomy: All Life is Here, Dissected and Depicted

Animal anatomy has fascinated artists and scientists for millennia, resulting in a treasure trove of striking images. Veterinary anatomist David Bainbridge here takes on the brave task of curating a bird’s-eye-view of anatomical artwork that simultaneously delights, educates, and (for some perhaps) horrifies.

The Art of Animal Anatomy (more…)

Book review – Across the Bridge: Understanding the Origin of the Vertebrates

When you think of an animal, you will most likely think of a vertebrate. Since we are animals with a backbone ourselves, it is not strange that that which is closest to us comes to mind first. But when and how did vertebrates evolve? To answer that question, Nature editor Henry Gee takes a good hard look at invertebrates, convincing the reader that they are not all equal. More than 20 years ago, Gee wrote Before the Backbone: Views on the Origin of the Vertebrates, which took a look at historical explanations for the origins of vertebrates. Which group of invertebrates is closest to us remains a topic of active research and Across the Bridge brings readers up to date with our current thinking.

Across the Bridge (more…)

Book review – King of the Dinosaur Hunters: The Life of John Bell Hatcher and the Discoveries that Shaped Paleontology

When I think of turn-of-the-20th-century palaeontology, names such as Othniel Charles Marsh and Edward Drinker Cope are the first to come to mind. Their infamous rivalry, known as the Bone Wars, relied heavily on field collectors who did the back-breaking labour of prospecting and quarrying for fossils. Most of these bone hunters are barely remembered, and John Bell Hatcher might very well have remained thus. This meticulous biography by American palaeontologist Lowell Dingus saves Hatcher from obscurity and documents both his hugely successful work as a bone hunter, as well as his later stellar but tragically short-lived career as a curator.

King of the Dinosaur Hunters (more…)

Book review – When Humans Nearly Vanished: The Catastrophic Explosion of the Toba Volcano

When it comes to big volcanic eruptions, names such as Vesuvius, Mount Saint Helens, and Krakatau will ring a bell. But all of these are dwarfed by a far larger eruption that few outside of the science community will have heard of. Noted geologist, palaeontologist and author Donald R. Prothero here tells the story of the eruption of Mount Toba in what is nowadays Sumatra, Indonesia, some 74,000 years ago. An eruption so gargantuan that it almost wiped out the human race.

When Humans Nearly Vanished (more…)

Book review – Timefulness: How Thinking Like a Geologist Can Help Save the World

At first blush, you might think this book is part of the ongoing craze of spiritual mindfulness books. But let me refrain from snarky comments. Geologist Marcia Bjornerud does indeed want to instill a sense of mindfulness about deep time, but one that is, pardon the pun, grounded in geology. In her opinion, most of us lack an awareness of durations of important chapters in our planet’s history and of rates of change of many natural processes. As a consequence, we fail to see just how rapidly we are altering our planet. In one of the first paragraphs she eloquently writes:

“Like inexperienced but overconfident drivers, we accelerate into landscapes and ecosystems with no sense of their long-established traffic patterns, and then react with surprise and indignation when we face the penalties for ignoring natural laws”.

And with that, she had me hooked.

Timefulness (more…)

Book review – The Palaeoartist’s Handbook: Recreating Prehistoric Animals in Art

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.

The Palaeoartist's Handbook (more…)

Book review – The Dinosaur Artist: Obsession, Betrayal, and the Quest for Earth’s Ultimate Trophy

Where do fossils belong? Should they be housed in museums, available for study by scientists to learn more about our planet’s deep history? Or can they be treated like exclusive souvenirs, traded and auctioned on a market that stocks the private collections of rich people? Journalist Paige Williams here tells the full story, warts and all, of a high-profile auction gone awry. She initially reported on this in 2013 in the New Yorker. Up for sale? A fully reconstructed skeleton of Tarbosaurus bataar, the Asian cousin of Tyrannosaurus rex.

The Dinosaur Artist (more…)

Book review – Land Bridges: Ancient Environments, Plant Migrations, and New World Connections

Before plate tectonics became an accepted idea in geology, Lyell’s doctrine of uniformitarianism still ruled supreme (see my review of Cataclysms: A New Geology for the Twenty-First Century for a short introduction). A corollary was that the continents supposedly had always been where they are now. One observation scholars had to explain away was that the same fossils occur on both sides of the various oceans. Looking at maps, some people noticed the thin strip of land connecting North and South America and concluded that land bridges must have formed and sunk beneath the waves at just the right times in history to enable migrations (see Four Revolutions in the Earth Sciences: From Heresy to Truth for more details). As explained in The Tectonic Plates are Moving!, we know better nowadays. Nevertheless, the concept of land bridges is still alive and well today, and palaeobotanist Alan Graham here introduces five of them, exploring their effects on biogeography, climate, and human history.

Land Bridges (more…)