Balaschovia? vel Mecynoceras sp., Cheiloceras Zone, Early Famennian, Poland. 1. Longitudinal sect on through a specimen from Jabłonna; bed J. 11. 2. Longitudinal sagittal section through the phragmocone (b), and associated living chamber in dorsal view (a) from Ieft wall of the Dule gorge in Łagów.

Balaschovia? vel Mecynoceras sp., Cheiloceras Zone, Famennian, Holy Cross Mts, Poland; reconstruction of the siphuncular structure based on a specimen from, Jablonna (a); cross section of the phragmocone from left wall of the Dule gorge, Łagów (b).