T49 - Rare Jobaria tiguidensis Sauropod Dinosaur Tooth Jurassic Tiouraren Fm Phalagnostus prantli chiefly chalcedony

chiefly chalcedony

impurities of iron and in some cases other transition metals

an exoskeleton (Complete exoskeleton)

carbonate (7)

United States (30: Arizona

T49 - Rare Jobaria tiguidensis Sauropod Dinosaur Tooth Jurassic Tiouraren Fm Phalagnostus prantli chiefly chalcedonyScientific name: Probably Jobaria tiguidensis (Sereno et al., 1999) Basal Sauropod Location: Tner Desert, Niger. Geological Formation: Tiouraren Fm Age: Middle Jurassic ( 167 million years) Size (long): 2. 7cm = 1. 06 Inch REF.: T49 DESCRIPTION: About the identification: The exact and accurate taxonomic identification of this type of teeth is not an easy task. On the one hand, there is the problem of knowing with certainty to which formation they