S221 - Exceedingly Rare Zapsalis abradens (Dromaeosaurid Raptor Theropod) Dinosaur Tooth - Judith River Fm Semicyclocephalus flexilis Its root is completely natural

Its root is completely natural

Canada  Ontario)

and the matrix is below to 70 μm

Retrieved 12 December 2015

PaleoDB taxon number: 396807

S221 - Exceedingly Rare Zapsalis abradens (Dromaeosaurid Raptor Theropod) Dinosaur Tooth - Judith River Fm Semicyclocephalus flexilis Its root is completely naturalZapsalis is a genus of extinct dromaeosaurid coelurosaurian dinosaur known primarily from teeth found in the Late Cretaceous Judith River Formation of Montana and Wyoming. Identification: Very compressed tooth with rounded serrations on the distal side and smooth mesial edge. One flat tooth surface with longitudinal ridges. The unserrated form of this tooth (Paronychodon morph) may also be a premaxillary tooth of a Dromaeosaurid or Troodontid. New