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T. rex tooth
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By ThePhysicist
Taxonomy
T. rex
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Avetheropoda
Family: Tyrannosauridae
Genus: Tyrannosaurus
Species: Tyrannosaurus rex
Author Citation Osborn, 1905
Geological Time Scale
Eon: Phanerozoic
Era: Mesozoic
Period: Cretaceous
Sub Period: None
Epoch: Late
Stratigraphy
Hell Creek Formation
Provenance
Acquired by: Purchase/Trade
Dimensions
Width: 11 mm
Height: 15 mm
Thickness: 5.5 mm
Location
Fallon County
Montana
United States
- c(hc)tr5
- hell creek
- hell creek formation
- t rex
- t rex posterior
- tyrannosaur
- tyrannosaurid
- tyrannosauridae
- tyrannosaur posterior
- tyrannosaurus
- tyrannosaurus rex
Comments
Identification
This is a classic T. rex tooth. It's clearly Tyrannosaurid by its robusticity, similar serration densities on each carina (mesial carina counted by the "roots" of the denticles as they are completely worn off), and chisel-shaped serrations. Those qualities with its locality and formation mean it must be the one and only.
Notes
The Crown Height Ratio (CHR) suggests a posterior position (it's short and stout). There's evidence of wear on the tip and mesial carina.
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