Thursday, October 16, 2025

Finding Rex

 kw: book reviews, nonfiction, science, paleontology, biographies, dinosaurs, t rex, tyrannosaurus rex

The last summer that I was a geology student I spent six weeks in an area above Lee Vining in the Sierras. Midway through, in the early afternoon I was resting near a pond when several backpackers came by, hiking toward a wilderness area another mile along the trail. I asked them how long they would be there. One said, "A week. How long have you been here?" I answered, "Three weeks." "Wow! That's neat," another one answered. I grinned ruefully and said, "Not really." I was already getting tired of tenting. Of course, since part of my daily routine was gathering rocks and hauling 10-20 pounds of them back to base camp for identification, I suppose I wasn't having quite as much fun as the average tourist. By the end of the summer I was pretty clear that I wasn't cut out for a job that required lots of field work.

Reading The Monster's Bones: The Discovery of T. Rex and How it Shook Our World by David K. Randall, I could only admire the grit of Barnum Brown. To this day, roughly half of the dinosaurs and early mammals on display at the American Museum of Natural History in New York City are specimens he collected. In addition to an iron constitution, he had a quick mind and had learned to recognize the kinds of geological deposits most likely to contain great fossils. He had also learned enough anatomy to make a good guess as to what animal a new bone belonged to.

While Barnum Brown collected on most of the continents, his main stomping ground was the great fossil beds of north-central United States. This was the area made famous by the "bone wars" of Professors Marsh and Cope, from 1877 to 1982. These rivals went broke trying to outdo each other as they collected, and described, species after species of large vertebrate fossils. In the end, the biggest and baddest dinosaur of all escaped their grasp. Brown found the first specimen of Tyrannosaurus rex in 1902, and for some years, during which he found a few more, he was the only collector to find any.

The book is largely a biography of Barnum Brown, who was named for P.T. Barnum almost on a whim, because the circus was in town. The author details his "life and hard times" and the resulting drive that motivated him to seek solace in the wilderness. Yet he wasn't antisocial, as so many "mountain men" are. In addition to great strength and persistence and lively intelligence, he could be intensely social, the kind of guy who is the life of the party, whatever party he happens across. This enabled him to befriend ranchers and farmers in the field and to maintain a, if not good, at least useful working relationship with the notoriously prickly director of the American Museum, Henry Fairfield Osborne. It greased many a relationship necessary to get access and tips to the best bone deposits. Brown lived just days short of ninety years.

Rather than focus on Barnum Brown, I find most interesting the social changes in attitudes toward dinosaurs that resulted from the discovery of T. rex. All the large dinosaurs found previously were herbivores such as the familiar Brontosaurus and Diplodocus and duckbills such as Hadrosaurus. They were portrayed as overgrown cows, brainless, plodding beasts that had to move about half submerged in swamps to buoy up their enormous bulk. When the first Triceratops was described in 1889 by Charles O. Marsh, not many wondered what the great horns were needed for. Then when the first tyrannosaur was discovered by Brown in 1902, it soon became clear that those horns were sorely needed! Public interest was piqued, and as "tyrant king" specimens or replicas were displayed in a growing number of museums, museum attendance boomed.

T. rex is still the most popular dinosaur. The proliferation of celebrity knockoffs such as Barney and the popularity of tyrannosaur suits, used for all sorts of pranks, has made this terrifying beast almost a cuddly member of the household. But I'm sure I wouldn't want to stumble across this picnic in a nearby forest! (Image generated with the Flux1.Kontext engine in Leonardo AI.)

I'm a six footer. Were I in this picture, the top of my head would barely reach the larger animal's knee. Even the "babies" shown here would outweigh me by a big factor. The teeth of an adult T. rex are the size of bananas. Big bananas. Perhaps Plantains.

I have great admiration for men like Brown who can go into the field and bring back cool stuff. My style of collecting is day trips…no more weeks in a tent for me!

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