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3.4" Fossil Bone in Sandstone - Judith River Formation
This is an interesting, 3.4" long bone that has been exposed from the rock it was found in, collected from the Judith River Formation of Montana. With such little bone present, it's tough to tell what exactly it came from other than a small reptile. This formation is approximately 75 million years old, or about 9 million years older than the Hell Creek Formation which produces Tyrannosaurus rex.
About the Judith River Formation
The Judith River Formation is one of the world's most prolific sources of Late Cretaceous vertebrate fossils. At least sixteen Orders containing more than forty Genera are known from the formation. These include fish, amphibians, mammals, and insects in addition to reptiles and avian (birds) and non-avian dinosaurs. Among the more interesting specimens is Leonardo, a mummified and fossilized Brachylophosaurus. This is a hadrosaur, a duck-billed dinosaur found with amazing soft-tissue preservation: skin impressions can be found on 90 percent of its body! The pattern in the skin on its feet is even preserved. In addition to Leonardo, the Judith River Formation contains the remains of the theropod Hesperornis, the only known freshwater Hespernorthid, a penguin-like bird.
The Judith River Formation is one of the world's most prolific sources of Late Cretaceous vertebrate fossils. At least sixteen Orders containing more than forty Genera are known from the formation. These include fish, amphibians, mammals, and insects in addition to reptiles and avian (birds) and non-avian dinosaurs. Among the more interesting specimens is Leonardo, a mummified and fossilized Brachylophosaurus. This is a hadrosaur, a duck-billed dinosaur found with amazing soft-tissue preservation: skin impressions can be found on 90 percent of its body! The pattern in the skin on its feet is even preserved. In addition to Leonardo, the Judith River Formation contains the remains of the theropod Hesperornis, the only known freshwater Hespernorthid, a penguin-like bird.
SPECIES
Unidentified
LOCATION
Hill County, Montana
FORMATION
Judith River Formation
SIZE
Bone: 3.4" long, Entire Specimen: 7.7 x 2.5"
CATEGORY
SUB CATEGORY
ITEM
#346944
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