The best known example of a Charnia masoni fossil in the recently revamped geology section of the New Walk Museum. I have seen the quarry where this fossil was taken and another Charnia masoni in Bradgate Park. Due to secrecy I can't submit.
A geological background of the host rock can be found here
SK5210 : Eastern Avalonia.
The fossil is the first ever Pre-Cambrian fossil ever recognised and described (some in Australia had been found but not recognised as being that old). Local boy Roger Mason was climbing in Bradgate Park and found this 'leaf'. Having a liking for geology he and his father contacted Trevor Ford of Leicester University who was sceptical. However on arrival its importance was apparent.
The fossil was described and named Charnia masoni; another extracted was Charnia discus. These organisms are still a mystery even with much research, however it is thought the fronds are not leaves, possibly filter feeders.
Another local lad, Richard Attenborough (also connected with Leicester University) often explored Bradgate Park a few years after the discovery.
SK5903 : Charnia masoni