This 3D digital skeleton of an adult male mastodon is part of the new University of Michigan Online Repository of Fossils website. (Credit: courtesy of the University of Michigan Museum of Paleontology)

Zoom and rotate 3D fossils with free online tool

Hundreds of 3D images of bones from mastodons, mammoths, and other prehistoric creatures are available on a new website.

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, says paleontologist Daniel Fisher, director of the University of Michigan Museum of Paleontology.

“None of what we’re doing now was possible when this all began,” says Fisher, who gave a presentation about the project May 5 in Greece at the VIth International Conference on Mammoths and their Relatives.

This is how the 3D digital model of a femur (thighbone) from the Buesching mastodon appears on the new website. (Credit: courtesy of the University of Michigan Museum of Paleontology)
This is how the 3D digital model of a femur (thighbone) from the Buesching mastodon appears on the new website. (Credit: courtesy of the University of Michigan Museum of Paleontology)

The number of 3D bone models on the new website is expected to grow into the thousands as additional specimens are added.

“On this website we’ll be providing 3D 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 says.

The new website, the University of Michigan Online Repository of Fossils, isn’t the first online paleontology collection, but it has features unmatched by any previous effort.

The resolution of the images is higher, and viewers can use a “BonePicker” tool to pull individual bones from a skeleton and examine photorealistic 3D versions of those bones up close.

3D 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.

A closer look

“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,” says 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 says. “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 website makes doing science more efficient, increasing access to the collections while protecting invaluable specimens,” Miller says.

Three key advances

Three recent advances made the project feasible, says Adam Rountrey, collections manager for vertebrates at the museum and lead developer of the digital viewer that presents the 3D models on the website.

The advent of handheld digital scanners enabled the team to quickly capture extremely high-definition 3D models of bones and other fossilized remains. The ability to digitally drape high-quality photographs of the bones onto the surface of the 3D models allowed for photorealistic 3D portrayal of specimens.

In addition, increased web browser support for 3D content meant that almost anyone with a computer and internet access could view the models.

The just-launched website includes a mastodon skeleton assembled from 245 bones painstakingly scanned into the computer by Fisher and his students. To help them properly align all the pieces, the researchers—with help from Brandon Walker of Midwestern Consulting—digitally scanned the mounted Buesching mastodon skeleton on display at the University of Michigan Museum of Natural History, then used it as a guide.

Visitors to the website can double-click on any bone in the mastodon skeleton to get a separate close-up image that can be rotated, zoomed, panned, and even measured.

Bones on your phone

“This will be invaluable to a researcher who has found an unidentified bone in the field,” Fisher says. “The mastodon foot has about 35 bones, and some are not very distinctive. Using this tool, you can see the structure of the whole foot, then go in and pick out an individual bone and examine it closely, then look at the next one and the next one until you figure out what you have.”

The site can also be viewed on mobile phones, so a field researcher with internet access can consult the 3D library without leaving the excavation site.

“Simply being able to zoom in and explore all of this anatomy is an opportunity that could easily arouse interest in young scientists-to-be,” Fisher says.

Source: University of Michigan

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