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are concretions containing angular cavities or cracks
84'' Crotalocephalina gibbus Lower Devonian Trilobite
In this case
50 143844164221 New Classification TARDA Carbonaceous Chondrite C2 Ung 0
13008 - Exceedingly Rare Saltasaurus Titanosaur Egg Shell - Late Cretaceous Enchodus Teeth are concretions containing angular cavitiesSpecies Saltasaurus sp (Titanosaur Sauropod Dinosaur) Egg shell AGE Cretaceous ( 100 million years) LOCATION Neuguen province, Patagonia, Argentina FORMATION Argentina Cretaceous outcrops SIZE 4cm Ref: M52 13008 Incredibly preserved egg shell piece from Saltasaurus, a Titantosaur sauropod, from Patagonia, Argentina. These are Cretaceous age shells were found in Neuquen Province, Patagonia, Argentina. All natural. No restoration. Authenticity