Murchisoniceras aff. murchisoni (Barrande, 1868)  from Baltic erratic boulders of Beyrichienkalk, Pridoli, Poland. 1. Phragmocone in lateral view (a) and its medial section (b), Garcz by Kartuzy. 2. Subadult specimen in lateral view, Orłowo.

Murchisoniceras aff. murchisoni (Barrande, 1868)  from Baltic erratic boulders of Beyrichienkalk, Pridoli, Poland. 1. Longitudinal section through a specimen; Orłowo. 2. Medial section through the phragmocone; Wieżyca.

Murchisoniceras aff. murchlsonl (BARRANDE, 1868) ; erratic boulders of the Beyrlchienkalk, Pfidolian, Poland;

a Reconstructionof the juvenile living chamber;

b section through a siphuncle, ZPAL N/687, Rozewie,

c reconstructionof a phragmocone fragment, ZPAL Nj683, Wiezyca