Age: 205-200 Million Years Old (Early Jurassic) Location: Connecticut River Valley, Massachusetts Ichnogenus: Grallator & Eubrontes Species: Theropod dinosaur species, possibly Podokesaurus/Dilophosaurus or similar Slab Size: 21” x 15” x 1” (large slab) & the positive impressions are smaller isolated pieces Average Footprint Size: 7”x 4”
Largest Track: 11” x 8”
No. of Tracks: 3
This is a very impressive fossil dinosaur footprints made by theropod dinosaurs in the early Jurassic similar to/ or what very well could be Podokesaurus holyokensis.
This is a fossil trackway made be a handful of different individuals, which is very uncommon. This specimen is museum quality and very special.
This specimen is a raised impression, otherwise known as a “natural cast”. This process of fossilization occurs when a trace is made, quickly hardens, and is buried swiftly with fresh sedimentary deposits that harden within the true impression. Occasional when you split the rocks of this region, you can get both the positive and negative impressions. However in some cases, like this, only one side of the fossil impression survives.
The original footprints were discovered, amongst others, by a farm boy, Pliny Moody. E.B. Hitchcock, a clergyman, described the Grallator footprints and others as evidence of ancient birds. Ever since that initial discovery, the Connecticut River Valley has routinely been the site of a plethora of scientific discoveries dating back to the Late Triassic & Early Jurassic periods.