Fossil bones of Apatosaurus louisae, Carnegie Quarry, Dinosaur National Monument, Utah, USA.

Apatosaurus louisae leg bones cluster in a spectacular Jurassic logjam of fossils in the Carnegie Dinosaur Quarry at Dinosaur National Monument, Utah, USA. Later discoveries of so-called "Brontosaurus" bones are a misnomer, as all bones of this sauropod (long necked dinosaur) should now be labeled Apatosaurus. The only Apatosaurus skull in the world was found here in the Carnegie Quarry because the sand-sized sediment preserves bone in great detail without compressing its fragile bones.

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Filename: 1503SW-2195_Apatosaurus-louisae-fossils.jpg
Copyright: © Tom Dempsey / PhotoSeek.com
Image Size: 5500x3560 / 7.3MB; http://www.photoseek.com/; Animalia Reptilia animal history past reptile vertebrate
Contained in galleries: Utah: Dinosaur National Monument, 2015 Mar 3-Apr 8: all: Utah, Colorado hikes

Apatosaurus louisae leg bones cluster in a spectacular Jurassic logjam of fossils in the Carnegie Dinosaur Quarry at Dinosaur National Monument, Utah, USA. Later discoveries of so-called "Brontosaurus" bones are a misnomer, as all bones of this sauropod (long necked dinosaur) should now be labeled Apatosaurus. The only Apatosaurus skull in the world was found here in the Carnegie Quarry because the sand-sized sediment preserves bone in great detail without compressing its fragile bones.