71 CTS GASTROLITHS DINOSAURS GIZZARD STONE MS 283

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Sauropod dinosaurs of the Jurassic and Cretaceous periods were the largest herbivores ever to have evolved, commonly exceeding body masses of 30 tons or more .

In many forms, the small head and weak dentition appear ill suited for oral processing of the enormous quantity of plant matter required to support their high growth rates , if not endothermic metabolism 

Polished pebbles occasionally found with sauropod skeletons are generally interpreted as gastroliths or stomach stones, i.e. stones ingested voluntarily by the animal and retained in its digestive tract

 

This gastrolith is from the Jursasic age fromt utah usa

size  28x 18x 19   MM

9h 50m 48s

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Auction ID 277795
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Starts 2nd Dec 2016 5:37pm PST
Ends 3rd Dec 2016 5:35pm PST

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