Imagine stumbling upon a fossil that seems to be grinning at you! This is exactly what happened to Christine Clark, a 64-year-old fossil enthusiast, during a casual walk on Holy Island, Northumberland. But here's where it gets fascinating: the fossil's resemblance to a smile is not just a playful coincidence.
The Fossil's Discovery and its 'Smile'
Christine's discovery began with a tiny pebble that seemed to have a smile, resembling fake teeth. This intriguing find sparked curiosity on social media, with thousands of people agreeing that it was an ancient creature. But what exactly was it?
Unveiling the Mystery: A Crinoid's Tale
The BBC, with the help of the British Geological Survey (BGS), identified the fossil as a part of a crinoid, an ancient marine animal. Crinoids, dating back to the Cambrian period over 500 million years ago, are among the oldest complex animals on Earth. They have a unique structure with a flexible stem attached to the seafloor and branching arms, earning them the nickname 'sea lilies'.
The 'Beads' and a Saint's Legacy
The fossil Christine found is a collection of small discs called ossicles, forming a structure known as a columnal. These ossicles are the individual parts that make up the stem of a crinoid. Interestingly, these fossils are known as St Cuthbert's beads, named after the patron saint of the North of England, who was believed to have a spiritual connection to these fossils.
A Rare Find and its Significance
Finding a complete crinoid fossil is rare, and most discoveries are of individual ossicles, often resembling polo mints. The BGS confirmed that Christine's fossil is from the Alston formation, a dark limestone around 350 million years old. Crinoids belong to the same phylum as sea urchins and sea cucumbers, adding to their biological significance.
Controversy and Comment:
The identification of the fossil as a crinoid part has sparked curiosity and debate. Some might wonder if the 'smile' is just a trick of the eye, while others may ponder the spiritual significance of St Cuthbert's beads. What do you think? Is this fossil a playful reminder of nature's sense of humor, or is there a deeper meaning behind its unique appearance?
