Class Graptolithoidea, Order Cephalodiscoidea, Family Cephalodiscidae
Cephalodiscus lutetianus Abrard, Dollfus et Soyer, 1950
Cephalodiscus lutetianus is the only
known fossil species of the recent
Cephalodiscus M'Intosh, 1882.
This form was described in 1950 from
the Eocene of France. It was preserved
in form of silicified tubes (up to 9 cm in
length and 2.5 mm in diameter).

 This species is known only from the
type locality.
To the left - General view of silicified

To the right - Details of the tube