Nicolia is a genus of fossilized wood from the Late Cretaceous to Pleistocene of Belgium,[1] Ethiopia, Egypt, New Caledonia,[2] New Zealand, and Tunisia.

[2] Independently in 1887, the name Aachenosaurus was created by the scientist (and abbé) Gerard Smets based on fossilized fragments found in the Aachen Formation of Moresnet (which was a neutral territory between Belgium and Germany).

[1] Smets considered that the specimen was a hadrosaur reaching an estimated 4 to 5 meters in length which might have had dermal spines.

[1] He defended this conclusion, citing that the fossils had been examined visually with the naked eye, magnifying lenses and with the microscope.

Smets at first tried to defend his original identification but was again proven wrong by a neutral commission.