Far from the public eye, clever hands and minds quietly make it possible to see and study dinosaurs and other prehistoric species. Those hands and minds belong to workers called “preparators.”
While an undergraduate at the University of Chicago, Caitlin Wylie worked in the lab of well-known paleontologist Paul Sereno – a prolific discoverer of dinosaur skeletons – preparing fossils for research by carefully scraping rock off bones and gluing broken bones together.
“I liked the total focus it required,” said Wylie, now an assistant professor of science, technology and society in the Department of Engineering and Society at the University of Virginia School of Engineering and Applied Science. “I could sit in the lab quietly for hours working on a bone. It was a nice break from classes and studying because it involved using my hands.”
Although Wylie loved the job, it wasn’t the dinosaurs, but the preparators who captured her imagination. Years later, she recently published a book, “Preparing Dinosaurs: The Work Behind the Scenes,” which, among other things, explains how those magnificent museum displays of dinosaur skeletons are assembled.
“So, you know that scene in ‘Jurassic Park’ where they have a complete, gorgeous skeleton lying in the sand and the paleontologists are dusting it with a paintbrush?” Wylie recently said in a . “No, that’s not real.”
Then, as now, research for Wylie – who would go on to earn a master’s and Ph.D. in the Department of History and Philosophy of Science at the University of Cambridge – meant examining the social aspects of how science gets done.
To gather evidence for the book, Wylie conducted ethnographic studies at 14 fossil preparation labs in museums and universities. She interviewed more than 60 scientists, conservators, collection managers and exhibit designers and talked with countless preparators as they hunched over fossils at a workbench.
We asked Wylie what led to the book and what her research uncovered. One revelation is good news for lifelong dinosaur lovers: Almost anyone can be a fossil preparator.
Caitlin Wylie is an assistant professor of science, technology and society in the Department of Engineering and Society at 鶹ƽ School of Engineering and Applied Science. (UVA Engineering photo)
Q. What made dinosaur preparators a compelling topic for you?
A. I spent a term volunteering as a preparator at the Natural History Museum in London. By then, I thought I knew what I was doing, but when I asked for the pen-sized pneumatic drills and permanent glues we used in Chicago, the preparators in London were shocked. I quickly learned preparators in the U.K. remove as little rock as possible, and they only use glues that can be dissolved away and other chemically inert materials, such as particular plastic cushions to line specimen trays. This approach is intended to protect fossils from falling apart over the long term.
How a vertebrate fossil is prepared, and by whom, is rarely recorded in specimen records or published papers. I was intrigued by how scientists could compare and interpret fossils that had been prepared with such different techniques and mindsets, without even knowing which techniques or mindsets or even people influenced how those fossils look.

.jpg)