S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous
S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous

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S506 - Exceedingly Rare Iguanodontian (cf Elrhazosaurus or Lurdusaurus) Dinosaur Tooth - Lower Cretaceous

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Species
Unidentified Iguanodontian (ornithopod dinosaur) - cf Elrhazosaurus or Lurdusaurus - Dinosaur Tooth
Age
Lower Cretaceous, Aptian/Albian stage ( 113 million years)
Location
Gadoufaoua, Téneré Desert, Niger.
Formation
Erlhaz Fm
Size
24 mm   •    in
Weight
2 g   •    oz
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Description

Iguanodontian dinosaurs from the Early Cretaceous of Niger, specifically within the Elrhaz Formation (Gadoufaoua deposits), include the prominent sail-backed Ouranosaurus nigeriensis and the heavily built Lurdusaurus arenatus. Another basal iguanodontian, Elrhazosaurus nigeriensis, is known from isolated fossils found in the region. 


Ouranosaurus nigeriensis: Named by Philippe Taquet in 1976, this 7–8.3 meter long herbivore is known for the, likely, heat-regulating or display-oriented sail on its back formed by long neural spines.


Lurdusaurus arenatus: Described as having a "massively-constructed" body, this iguanodontian had a unique, almost sloth-like body form compared to other members of its group.


Elrhazosaurus nigeriensis: Originally thought to be a species of Valdosaurus, this basal iguanodontian is known from fragmentary remains. 
These dinosaurs thrived in what is now the Sahara Desert during the Aptian stage (approx. 115–105 million years ago). 

Observations: With only one isolated tooth, it is very difficult to arrive at a precise taxonomic ID. The morphology of this tooth undoubtedly belongs to an Iguanodontian. Due to its size, we must rule out Ouranosaurus; therefore, it must correspond to the small, basal Iguanodontian Elrhazosaurus or Lurdusaurus.

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