3.9" Crocodile Fossil Pelvic Bone Lance Creek FM Wyoming Cretaceous Dinosaur Age
Location: Lance Creek Formation, Wyoming (Private Land Origin)
Weight: 3 Ounces
Dimensions: 3.9 Inches Long, 2.6 Inches Wide, 0.9 Inches Thick
The item pictured is the one you will receive.
Cretaceous Age through to the Eocene Age
Name: Borealosuchus (Boreal crocodile).
Named By: Chris Brochu - 1997.
Classification: Chordata, Reptilia, Crocodylomorpha, Crocodylia.
Diet: Carnivore/Piscivore.
Size: Up to 2.8 meters long, though there is some variance between species.
Time period: Campanian of the Cretaceous through to the Eocene.
The genus Borealosuchus was established following a revision of the genus Leidyosuchus, which had long been considered a “wastebasket taxon”—a grouping used for species that did not clearly fit elsewhere. As a result of this revision, four former species of Leidyosuchus were reassigned to Borealosuchus, and since then, two additional species have been named under this genus.
Borealosuchus was a mid-sized crocodile, with the largest species, Borealosuchus acutidentatus, reaching approximately 280 centimeters (2.8 meters) in length, and possessing a skull about 36 centimeters long. Its size and morphology suggest it was a capable predator in the rivers and wetlands it inhabited.
Remarkably, Borealosuchus was one of the crocodile genera that survived the Cretaceous–Paleogene (K–T) extinction, the event that wiped out the dinosaurs, pterosaurs, and many large marine reptiles. Its survival, along with other crocodilian genera such as Dyrosaurus and Brachychampsa, suggests that crocodiles’ physiological and ecological adaptations—including their semi-aquatic lifestyle, generalist diet, and ability to tolerate environmental stress—may have enabled them to endure one of Earth’s most catastrophic mass extinctions.
