Name: Alethopteris sp
Age: Carboniferous, Stephanian
Origin: Liévin, France

This fossil plant comes from an old collection and measurement of the slab is 23 cm in its longest. The plate is very nice and the preservation is outstanding for that kind of fossil.
Plants of that quality are rare in carboniferous deposits.

Overall size of the stone : 23 x 18.5 x 4 cm
Size of the biggest fern : 12 cm
Weight : 2.8 kg