Skip to main content Accessibility statement

We use cookies on this site to enhance your user experience.

By clicking the Accept button, you agree to us doing so. More info on our cookie policy.

View in timeline

Dinosaur Footprint

166 million years ago Geologic to Prehistoric

This 166-million-year-old dinosaur footprint cast, found in Irchester, is Northamptonshire’s first dinosaur evidence, likely made by a Megalosaurus

Dinosaur footprint cast, one of several found at Irchester Country Park. © NMAG
Dinosaur footprint cast, one of several found at Irchester Country Park.
Reconstruction of Megalosaurus with a mostly hypothetical head © Public domain (Wikimedia Commons)
Reconstruction of Megalosaurus with a mostly hypothetical head

This dinosaur footprint (technically a footprint cast) is the first evidence of dinosaurs ever found in Northamptonshire. Found in Irchester Country Park in early 2024, it has been confirmed as probably belonging to a large meat-eating dinosaur called a Megalosaurus which lived around 166 million years ago.

During this period, called the Middle Jurassic, Northamptonshire was part of a narrow seaway between two land masses and the climate was much warmer.

At some point during this time a dinosaur walked across soft ground, possibly a sandy shore, leaving behind impressions of its feet. Over time, sediment (like sand, volcanic ash, or mud) washed into the footprint and filled it. These layers hardened into rock over millions of years until eventually, erosion (from wind, water, or geological activity) wore away the upper layers covering the filled footprint and only hardened infill remained as a raised cast of the original footprint. Another two such footprint casts have since been found in Irchester Country Park. The footprint cast measures approximately 1 metre in width.

Number 4 of the objects selected for the A History of Northamptonshire in 100 Objects Exhibition 2025

Irchester Country Park
Contributed by Stephen Pulley

Explore related content (external site)

See our disclaimer

Related objects

  • Piece of Northamptonshire ironstone, from Irchester Country Park. © NMAG
    Geologic to Prehistoric

    Ironstone

    Northamptonshire’s ironstone was formed from iron-rich sediments in the Jurassic period. Quarried since Roman times, ironstone has shaped our landscape, fuelled the county's industry and built our houses.

  • Carved stone figure mid-13th century © Andy Chapman
    Medieval to Tudor

    “Norman Morris” - Carved Stone figure from West Cotton,

    This unique limestone figure, carved in deep relief, shows a man in a long belted robe with hands held in prayer. Among thousands of Medieval objects excavated from the Deserted Medieval Hamlet of West Cotton, Raunds (1985–89), this one stood out and was affectionately nicknamed ‘Norman Morris’ by the archaeological team.

  • Neolithic flint axe  found in Higham Ferrers, Northamptonshire © NMAG
    Geologic to Prehistoric

    Thorpe (Neolithic) Axe

    The Thorpe axe, named after the finder of the Axe in the inter-war years, is a large neolithic flint axe found in Higham Ferrers.

  • Collyweston slate tile with copper pin and wooden peg fixings © NMAG
    Medieval to Tudor

    Collyweston Slate

    Collyweston slate roof tile. Quarried since Roman tiles and used extensively in the early modern period.