10051 - Real Triceratops horridus Dinosaur Fossil Tooth - Hell Creek Fm - Montana Perisphinctes are probably the result of

are probably the result of high pressure shockwaves produced by collisions of the ureilite parent body with other asteroids

Sister taxa: Eokochaspis

the United Kingdom (3)

and the iguanodontians Lurdusaurus and Ouranosaurus

also occur and are strongly depleted in Fe

10051 - Real Triceratops horridus Dinosaur Fossil Tooth - Hell Creek Fm - Montana Perisphinctes are probably the result ofScientific name: Triceratops horridus Location: Hell Creek Formation Eastern Montana (Private Land Origin), USA Geological Formation: Hell Creek Fm Age: Upper Cretaceous, Maastrichtian stage ( 67 million years) Size: 2,28cm long 1,52cm wide 1. 27cm thick Ref: 10051 Triceratops is a herbivorous dinosaur that first appeared during the late Cretaceous period, about 68 million years ago in what is now North America. It is one of the last known dinosaurs.