The fossil found on Vega Island in 2009 was a dinosaur footprint, not a full skeleton. This footprint is estimated to be from the Late Cretaceous period, which lasted from approximately 100 to 66 million years ago.

It's important to note that while the fossil is from the Late Cretaceous, it doesn't necessarily represent the *first* dinosaur footprint. Many dinosaur footprints have been found around the world, and determining the very first one is difficult due to the nature of fossils and the lack of complete records.

It's also important to remember that the Late Cretaceous is the time period that saw the extinction of the dinosaurs, making this discovery particularly interesting for paleontologists.