English: Diplodocus sp. - two sections of articulated neck vertebrae from a sauropod dinosaur in the Jurassic of Utah, USA.

Sauropod dinosaurs were the largest terrestrial animals ever. They all have the same basic body plan: large body with four walking legs, very long neck & tail, and a small head relative to body size. Sauropods were herbivores, and are often perceived as holding their heads & necks up high to reach vegetation normally out of reach to other organisms. Modern reconstructions of many sauropod species depict them with heads and necks held close to the horizontal, or at low angles above the horizontal.

Classification: Animalia, Chordata, Vertebrata, Dinosauria, Saurischia, Sauropoda, Diplodocidae

Stratigraphy: Carnegie Quarry Sandstone, Brushy Basin Member, Morrison Formation, Kimmeridgian Stage, Upper Jurassic, ~150 to 156 Ma

Locality: Carnegie Quarry, Dinosaur National Monument, northern Uintah County, northeastern Utah, USA

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See info. at: en.wikipedia.org/wiki/Diplodocus and en.wikipedia.org/wiki/Sauropoda and

en.wikipedia.org/wiki/Dinosaur_National_Monument