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Aachenosaurus multidens

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By briankroesch   |   
© 2005 - 2020 briankroesch
You're likely to see this name right at the top of any comprehensive catalog of dinosaurs. The problem is that it not only wasn't a dinosaur, it wasn't even an animal.
Aachenosaurus multidens was named after the place of its discovery, the Aachenian deposits of Moresnet in Belgium. In 1887, Abbey G. Smets, professor of natural sciences at a nearby college, discovered what he believed to be two pieces of jawbone from a new type of hadrosaur, a herbivorous bipedal dinosaur standing 4 to 5 meters high. He proceeded to give a detailed description of the animal, claiming to have examined the "bones" under a microscope as well.

Smets presented his findings to the Belgian geological society in 1888. A Mr. Dollo visually examined the specimens and determined them to be petrified wood.

Petrified wood- Which, after it dies, is covered up by something such as volcanic ash, volcanic mudflows, sediments in lakes or materials washed in by floods. When it's underground, the wood does not decay because oxygen and microorganisms can't reach it. Minerals dissolved in groundwater get inside the cells of the wood and form chalcedony, other quartzes, or opal, with colors caused by other minerals that are mixed with the silica forming most types of petrified wood. It's most commonly brown but can be many colors. The grain of the wood can still be seen in the rock, and it can be polished up for use in jewelry or other decorative items.

Text credit to: Everything 2 and The Everything Development Company

Drawing by Brian Roesch.
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KnebulaNight's avatar
KnebulaNightProfessional Digital Artist
I've always loved the story behind this one, and so it's my favorite dinosaur :)