1.7" Cretaceous Crocodilian Jaw Section - Judith River Formation

This is a 1.7" wide crocodilian jaw section from the Judith River Formation of Montana. This formation is approximately 74 million years old, or about 9 million years older than the Hell Creek Formation which produces T-Rex. The teeth sockets are still beautifully preserved within the jaw.

Comes with an acrylic display case.

There are a number of genres of crocodiles and alligatoroids described from this formation with very similar teeth and jaws. Typically most crocodilian material just get assigned to Leidyosuchus by collectors, however in 1997 several species of Leidyosuchus were reassigned to Borealosuchus.

The Judith River Formation is one of the 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 the reptiles, avian and non-avian dinosaurs (birds). Among the more interesting specimens is Leonardo, a mummified and fossilized Brachylophosaurus. This is a Hadrosaur, a duck-billed dinosaur with amazing preservation of the soft tissues of the body. The pattern in the skin of the 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.
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DETAILS
SPECIES
Unidentified Crocodilian
LOCATION
Hill County, Montana
FORMATION
Judith River Formation
SIZE
1.7" wide
ITEM
#227817
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