A beautiful example of the ammonite Dactylioceras that swam the shallow seas of the Jurassic period, over 180 million years ago.
It is thought that Dactylioceras was a slow-swimming scavenging ammonite based on flow-tank experiments - however, its poor swimming skills didn't prevent it from becoming one of prehistory's most successful ammonite species. Dactylioceras, as a species, managed to survive for over 100 million years (five hundred times longer than we've been on the planet) - only dying out in the mass extinction event that also killed off the dinosaurs sixty-five million years ago.
Frame is around 30cm 24cm in size.
This particular specimen is from Whitby, U.K.
Acquired by Timeless on the UK Mineral and Fossil Market, 2018. Originally discovered in Whitby, UK.