Modern technology allows digital scanning of fossils

More than two decades ago, University of Michigan paleontologist Daniel Fisher and some of his students began the laborious task of digitally scanning the bones of mastodons, mammoths and other prehistoric creatures so the images could be displayed on computers.

Fisher hoped to someday create a digital showcase where 3-D images of specimens from the university’s Museum of Paleontology’s vast collection could be shared with other researchers and with the general public. Sadly, the technology needed to make that dream a reality just didn’t exist at the time.

But several recent technical advances have enabled the museum to place hundreds of the scanned images on a new Web site called the University of Michigan Online Repository of Fossils. Initially intended as a tool to help field paleontologists identify fossils, the powerful new resource is expected to have wide appeal to students and the general public, as well, said Fisher, the museum’s director.

“None of what we’re doing now was possible when this all began,” said Fisher, who gave a presentation about the project in Greece at the VIth International Conference on Mammoths and their Relatives.

The number of 3-D bone models on the new Web site is expected to grow into the thousands as additional specimens are added. All of the Museum of Paleontology’s scientists and staff members contributed to the project.

“On this Web site we’ll be providing 3-D models that allow you to manipulate these objects onscreen and to do very much what we would do if we had the real specimen in our own hands — zoom in on it, rotate it this way and that, and even make measurements of it,” Fisher said.

The new Web site is not the first online paleontology collection, but it has features unmatched by any previous effort. The resolution of the images is higher, and viewers have the ability to use a BonePicker tool to pull individual bones from a skeleton and examine photorealistic 3-D versions of those bones up close.

3-D bones from elephant-like mammoths and mastodons are available on the site, along with photo galleries of early whales and other vertebrates. Three-dimensional digital models of various ancient marine invertebrates — brachiopods, trilobites, clams, crinoids, snails and others — will be added soon.

“In many cases, especially for smaller specimens, you can see a lot more detail on the screen than you could if you were holding it in your hand,” said Dan Miller, invertebrate paleontology collections manager at the museum. On the computer monitor in front of him is a large, crisp color image of a clam-like brachiopod that lived on the sea bottom some 390 million years ago.

“Keep in mind that this specimen, which is maybe 7 or 8 inches on the screen, is really only an inch and a half in size,” Miller said. “If I had it in my hand right now, I wouldn’t be able to see half of the detail that I see here on this screen.”

Sharing the museum’s collections virtually also has practical benefits. Research museums often loan specimens to other scientists, raising the possibility that one-of-a-kind objects could be damaged or lost. It’s also expensive to ship large, heavy bones.

“This new Web site makes doing science more efficient, increasing access to the collections while protecting invaluable specimens,” Miller said.

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