Book review: King Tyrant

King Tyrant book cover.***** Sets the standard for what good popular science can be

When Princeton University Press announced King Tyrant, I was beyond excited. Whether it is pterosaurs, palaeoart, or the Crystal Palace dinosaurs; whatever palaeontologist and palaeoartist Mark Witton writes on has been brilliant so far, and King Tyrant very much continues that tradition. Do not let the pretty pictures fool you; this is not a children’s book but a grounded, fact-based overview of the scientific consensus on all things Tyrannosaurus rex, combined with numerous informative diagrams and Witton’s gorgeous palaeoart. The execution of this book sets the standard for what good popular science can be and is a model that other authors and publishers can aspire to.

Even if you know nothing about dinosaurs, T. rex is the one name you will recognise, such is the fame of this extinct animal. Surely, books about it are a dime a dozen? In a recent interview on the Love in the Time of Chasmosaurs podcast, Witton pointed out that, surprisingly, this is not the case. Hone’s book covered the family at large, but, aside from two technical books in recent decades, the last popular treatment was Horner & Lessem’s book in 1993. That might just as well be prehistory, given how much research has advanced and how many more fossils have been found since then. This is a clear case of Witton writing the book that he wanted to read.

King Tyrant book page.Given how frequently the name T. rex crops up, you might even get a bit annoyed: not you again! All the more reason to read this book. Witton is acutely aware that a veritable subculture has grown up around this one species that “sits, sometimes uncomfortably, on the boundary between science and sensationalism” (p. 1). These popular depictions, often carrying with them an air of scientific authority, bleed into people’s consciousness, creating something less of a dinosaur and more of a chimaera, with traits both exaggerated and fictional. One of Witton’s most important goals with King Tyrant is to “deconstruct hype and controversy” (p. 41). The first chapter daringly combines a précis of the first century of research with an examination of the sociological side. How did this particular species become palaeontology’s rock star? It is a fascinating history that starts at the American Museum of Natural History who promoted it to attract large crowds. It was “proverbial lightning in a bottle” (p. 278), with an influential legacy that lasts to this day in movies, documentaries, and merchandise. And yet, popular depictions “have nothing on what science tells us about the reality of Tyrannosaurus rex” (p. 279).

The bulk of the book thus explores what the science actually shows. The remaining six chapters flow logically into each other: the definition and taxonomy of the species; internal and external anatomy; physiology, growth, sensory biology, locomotion, etc. (i.e., what all this anatomy might have been capable of); ecology and behaviour; and extinction. Indeed, the writing is one of the two highlights of this book. Witton strikes that fine balance between going into quite some technical detail and yet keeping it entertaining. The result is a well-grounded and accessible summary of the scientific consensus on numerous topics.

King Tyrant book page.T. rex, more than any other species, attracts a lot of fringe ideas from inside and outside of academia, and Witton leaves no rock unturned. On the one hand, there are the minority views and “non-troversies” (thanks Witton, I am stealing that brilliant term) that get far too much airtime, such as the existence (or not) of a dwarf species, “Nanotyrannus“, or the scavenging hypothesis, the notion that T. rex was a scavenger rather than a hunter. Needless to say, neither idea curries much favour among professionals. On the other hand, actual scientific debates are often ignored by the press. Opinions are divided on whether dinosaurs were already on their way out before the asteroid impact or were still in their prime. Witton provides the best overview of this topic that I have read so far.

In The Future of Dinosaurs, Hone pointed out the frequent disparity between what people *think* we know, and what we actually know – and plenty of examples of this feature here. Some confident depictions are almost completely fictitious. The trope of the roaring T. rex leads to the question of whether dinosaurs as a group vocalised at all! This is not “overzealous scientific conservatism” (p. 159); we have found, all told, one whole fossilised voice box. The ensuing discussion on the evolution of vocalisation in birds, dinosaurs, and other reptiles shows the complexities and competing scenarios. The opposite also holds: there are topics where the general public does not realise just how much palaeontologists know, such as the anatomy of T. rex‘s face or its remarkable growth pattern with age.

King Tyrant book page.

The other highlight of this book is the illustrations, both the artwork and the diagrams. Witton is an accomplished palaeoartist who cares deeply about the scientific accuracy of his artwork. We thus get modern depictions of dinosaurs with fleshy lips and bulky muscles. Each of these paintings is worthy of a frame, and it is hard to pick favourites. The book’s cover, showing T. rex rumbling a closed-mouth vocalisation (a behaviour seen in modern birds and reptiles), is, in my opinion, one of the best pieces he has ever made. The azhdarchid pterosaur stalking a juvenile T. rex on page 250 is also instantly memorable. Even when the subjects are cliché, such as T. rex near erupting volcanoes or the K–Pg impactor streaking across the sky, Witton’s depictions are visually arresting. Labelled photomontages show T. rex‘s “raw osteological charisma” (p. 4), and include detailed close-ups that help you form a mental picture of what all those anatomical bits look like. Equally important are the numerous informative diagrams littered throughout the book. Witton has gone to the painstaking effort of redrawing every one of them, in the process modifying and adapting them as necessary. Instead of a mishmash of styles, ages, production values, and extraneous details, the illustrations are presented in a single unified style. It will have been a huge amount of work for something that most authors and editors would probably consider nominal gains, but it shows his attention to detail, and I, for one, rate this very highly.

King Tyrant is an instant classic: I do not even care that much for T. rex per se, but the book’s brilliant execution immediately lands it a spot in my top 5 for 2025. A compulsory buy for dinosaur enthusiasts, this book is also a valuable overview for professional palaeontologists and an inspirational example of what excellent science communication looks like.

Book Review: Ocean Life in the Time of Dinosaurs

The front cover shows a large marine dinosaur jumping out of the ocean to eat a large flying dinosaur. ***** A richly illustrated entry-level book

In this review, I am revisiting the spectacular diversity of marine reptiles that flourished in the planet’s oceans and waterways during the time of the dinosaurs. After having gone without popular titles on the subject for almost two decades since Richard Ellis’s Sea Dragons in 2005, suddenly we have three. Last year (AprilMay) I reviewed The Princeton Field Guide to Mesozoic Sea Reptiles and Ancient Sea Reptiles, and mentioned that this book was in the works. Ocean Life in the Time of Dinosaurs was originally published in French in 2021 as La Mer au Temps des Dinosaures by Belin/Humensis and has been translated into English by Mark Epstein. Technically speaking that makes it the first of this recent crop, though the English translation was only published in November 2023, after the aforementioned two works. It brings together four French palaeontologists and one natural history illustrator for a graphics-heavy introduction. So, what is in this book, and how does it compare to the other titles?

Ocean Life in the Time of Dinosaurs breaks down into two halves. The obligatory first short chapter introduces the state of the world during the Mesozoic Era 252–66 million years ago (mya), specifically the position of the continents (the palaeogeography) and the various extinction crises by which we divide this time span. After this, the first half is a very long chapter 2 that discusses all the major and minor groups: the “big three” (ichthyosaurs, plesiosaurs, and mosasaurs); the groups with survivors today such as the crocodylomorphs and sea turtles; and lesser-known groups such as hupehsuchians and thalattosaurs. The second half of the book consists of five chronological chapters that help you put all this diversity into some sort of logical order. This starts with life’s first coy attempts at reptiles-returning-to-the-sea in the Palaeozoic Era, the main event of the Mesozoic in three chapters (the Triassic, Jurassic, and Cretaceous), and the Cenozoic Era in which the survivors of the K–Pg extinction continued and sometimes thrived.

The book’s second half stood out to me for two reasons. First, it helps prevent the same rookie mistake that is often made regarding dinosaurs: they did not all live at the same time. This may sound incredibly obvious and yet is easily and frequently forgotten. Where marine reptiles are concerned, a good example of this is that the ichthyosaurs evolved ~252 mya and went extinct ~90 mya, while the mosasaurs evolved ~100 mya and went extinct 66 mya at the K–Pg boundary, the two groups thus overlapping for “only” 10 million years. Turtles and crocodylomorphs survived the K–Pg extinction and positively flourished, though some groups subsequently went extinct and left no living descendants, such as the dryosaurids (a crocodylomorph lineage, extinct ~40 mya). The second reason I liked this chronological section is that it is largely told through the lens of key fossil localities around the globe (here, among others, Monte San Giorgio, Holzmaden, and the Oxford Clay). Though their names are often familiar and each of these deposits offers a unique view of a certain ecosystem at a certain time, they rarely get much attention themselves. The authors here provide just that little bit of extra information on their geography and stratigraphy, the history of their discovery and exploitation, and the palaeoenvironment that can be deduced from them.

Ocean Life in the Time of Dinosaurs is richly illustrated in full colour with photos, diagrams, and paleoart by Alain Bénéteau, including single and double-page spreads. There are several cladograms mapped onto timelines, with the simplified phylogeny of crocodylomorphs on page 69 particularly useful in visualising the uncertain placement of thalattosuchians. Drawings show unique anatomical adaptations, explaining e.g. the evolution of turtle shells. The text is regularly interspersed with boxes discussing notable species or concepts such as proposed forms of swimming or adaptation of bones to life underwater. In short, the visual presentation of this book is outstanding.

I normally prefer to review each book on its own merits, but given that we now have two richly illustrated introductory books, there is no avoiding the mosasaur in the room. How does Ocean Life in the Time of Dinosaurs stack up against Darren Naish’s Ancient Sea Reptiles? As I also observe about his Dinopedia, Naish is particularly interested in taxonomy and species diversity. Whereas the discussion of the different groups here takes up 55 pages in chapter 2, Naish does this in 132 pages and six chapters. He goes into more detail on taxonomic conundrums and for most groups discusses more species. What the French quartet here adds are the five chronological chapters, extending their coverage of evolutionary events to before and after the Mesozoic. As mentioned, they also give more detail on key fossil sites whereas Naish briefly mentions some of these in his chapter 1. My impression is that palaeontology buffs will want to get both books, despite the inevitable overlap. If, however, you are looking to buy just one book then Ocean Life in the Time of Dinosaurs is the most entry-level of the two, while Ancient Sea Reptiles provides more detail (and in that scenario would be my book of choice). My original observation regarding Greg Paul’s The Princeton Field Guide to Mesozoic Sea Reptiles, that it is more of a reference work to be consulted after either of these books, still holds.

The front cover shows a large marine dinosaur jumping out of the ocean to eat a large flying dinosaur.

Ocean Life in the Time of Dinosaurs is available from our online bookstore.