The piece is a rare, especially well preserved Conularie, which I received in a state of already started preparation to further work on.  The fossil and the surrounding area were fully uncovered. In doing so even the mouth area was prepared, which is very seldom preserved. After smoothing the matrix, the details were prepared using a needle and a sand blaster.  

Due to the exceptional preservation of the mouth area, as well as of the shell, this piece was scientifically examined in the Natural History Museum London (NHM London): 

Sendino, C., Bochmann, M.M. An exceptionally preserved conulariid from Ordovician erratics of Northern European Lowlands. PalZ (2021). https://doi.org/10.1007/s12542-020-00534-7, Link to the article 

If you have any questions concerning the fossil or paper, please contact Martin Bochmann (see contact details in the paper).

Fossil: Conularia

Locality: Find from the erratic in the Lausitz (Germany)

Formation: Ordovician

Length of the fossil: 4 cm

Collection: Martin Bochmann

Work required: 3 hours