21554 - Outstanding 1.90 Inch Ceratarges sp Middle Devonian Carboniferous Plants Precious tooth of the famous

Precious tooth of the famous dinosaur with three horns on its skull

55 Type spec location: MNB Main mass: Said Yousfi Comments: Submitted by Ansgar Greshake Institutions

Not restored or prepared

Smith and Zamora 2013 and Whittington et al

21554 - Outstanding 1.90 Inch Ceratarges sp Middle Devonian Carboniferous Plants Precious tooth of the famousImpressive specimen, prepared in an exceptional way. This type of preparation requires meticulous work of tens of hours. It has been partially prepared as free standing. Of course, many of the spines during the preparation process have been fractured and glued again, with slight restorations in the fracture zones. A preparation like this without small restorations is impossible. It is an authentic specimen of Museum Grade. This species of trilobite is