Thagomizer Spike Stegosaurus

[svcgoat]

Height: 6.25 in (15.88 cm)
Width: 18 in (45.72 cm)
Depth: 0.5 in (1.27 cm)

 

Found Morrison Formation Wyoming

 

Is this a Thagomizer Spike?

[trilobites_are_awesome]

I also saw this one for sale I am curious if it really is what they claim it to be.