Amiiformes are an early order of bony fish which evolved during the Triassic period and despite their evolutionary age, still have two living members known as Bowfins, which are often referred to as ‘living fossils’. 

To date only one Amiiformes has been found in the London Clay formation and that itself is only represented by a single specimen, making this very rare indeed.

This image represents a living Bowfin (Amia calva) and is a freshwater Amiiformes found in the US. 

Photo credit: Luke Smith