Spinosaurus Tooth - SOLD 2.734" Natural Wear Fossil maiasaur they comprise over 250 million

they comprise over 250 million years from the Ordovician to the Jurassic

making the specimens really pop

aragonite tends to convert to calcite

which produces an iridescent sheen

431" mission-flown nose landing gear tire fragment from the Space Shuttle Columbia (OV-102)

Spinosaurus Tooth - SOLD 2.734" Natural Wear Fossil maiasaur they comprise over 250 millionTopping out at just over 18m long (59ft), Spinosaurus is one of the largest carnivorous dinosaurs ever discovered. This family of giant theropods also happens to be among the most surprising creatures in the fossil record. This specimen is a naturally worn, fossilized crown and partial root of a real Spinosaurus tooth from the Kem Kem fossil beds of Morocco. It measures 2. 734" in length.