Eubrontes (Hitchcock, 1845) is the name of fossilised dinosaur footprints dating from the Late Triassic and Early Jurassic. They have been identified from France, Poland, Slovakia, Italy, Spain, Sweden, Australia (Queensland) and the USA. It is a junior synonym of Grallator.
Eubrontes is the name of the footprints, identified by their shape, and not of the genus or genera that made them, which is as yet unknown. They are most famous for their discovery in the Connecticut River Valley of Massachusetts in the early 19th century. They, among other footprints, were the first known dinosaur remains to be discovered in North America, though they were initially thought to have been made by large birds by Edward Hitchcock, a professor of Amherst College. Another major find occurred at Rocky Hill, Connecticut in 1966. Nearly 600 prints are preserved there in an area now designated Dinosaur State Park.
Eubrontes prints. Dinosaur State Park and Arboretum
In early 1970s, a fiberglass cast of an Eubrontes giganteus footprint was made by Paul E. Olsen, then 14 years old, and his friend. It was then sent to President Richard Nixon to get his support for registering the Riker Hill Fossil Site in Roseland, New Jersey as a National Natural Landmark.
A typical Eubrontes print is from 25 –50 cm long, with three toes that terminate in sharp claws. It belongs to a biped that must have been over one metre high at the hip and from 5–6 metres long. E. Colbert and others supposed that a large heavy carnivore like Teratosaurus (then considered to be a dinosaur) made the track, but a possible candidate is Dilophosaurus, a large theropod related to Coelophysis, or a close relative. However no Dilophosaurus fossil material is associated with Eubrontes tracks.
Eubrontes is the state fossil of Connecticut. The type species is Eubrontes giganteus. The French footprint has been called Eubrontes veillonensis. The name means 'true thunder,' probably referring to the supposed weight of the animal impacting on the ground.
A trackway attributed to the ichnogenus Eubrontes had a missing second digit on the right foot. The animal could have either lost the toe due to injury or it was malformed
This is a cast of an unusual Eubrontes (a carnivorous dinosaur) footprint-- it is unusual for having four toe prints, rather than the usual three toe prints most commonly found.
The cast of this specimen is also notable because it is not an imprint of a dino foot, but an "out-print". The actual fossil footprint itself was found in Colorado sometime in the mid 1990's, which was when this cast was made. The other footprints from this animal in the trackway all had four-toes as well, which meant it was either a lame animal, or was born with an extra toe.
The full piece measures about 18 1/2 inches across, about 11 inches in width, by 1 1/2 inches thick.
The footprint itself measures about 8 inches heel-to-toe, and is 12 inches across.
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