Image: Eobrontosaurus yahnahpin

Description: Eobrontosaurus yahnahpin (Filla & Redman, 1994) sauropod dinosaur leg (left forelimb) from the Jurassic of Wyoming, USA (public display, Morrison Natural History Museum, Morrison, Colorado, USA). Classification: Animalia, Chordata, Vertebrata, Dinosauria, Sauropodomorpha, Diplodocidae Stratigraphy: fluvial mudshales/mudrocks/siliciclastic mudstones of the Morrison Formation, Upper Jurassic Locality: Bertha Quarry, northwestern Albany County, southeastern Wyoming, 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.
Title: Eobrontosaurus yahnahpin
Credit: Eobrontosaurus yahnahpin sauropod dinosaur (Morrison Formation, Upper Jurassic; Bertha Quarry, northwestern Albany County, southeastern Wyoming, USA)
Author: James St. John
Usage Terms: Creative Commons Attribution 2.0
License: CC BY 2.0
License Link: http://creativecommons.org/licenses/by/2.0
Attribution Required?: Yes