Arionoceras valens (BARRANDE, 1868)

1.Longitudinal secti n through a phragrnocone, ZPAL N/662 ; erratic boulder of grapiolite limestone, Early Ludloviun,Rozewie, Poland .

2. Section through a complete living chamber, ZPAL N/661 ; erratic boulder of graplolite limestone, Rozewie, Polnd

3. Living chamber in lateral (a ) and dorsal  (b) views, ZPALN /663 ; erratic boulder of graptolite limestone, Wejherowo, Poland .

4. Apical part of a shell , ZPAL N/870; boulder E-036, Ludlovian, Miedzyzdroje, Poland .

5. Living chamber in lateral (a ) a nd ventral (b) views, Z PALN /665 ; erratic boulder similar in lithology to E-036, Garczby Kartu zy, Poland.

6. Subadult living chamber in lateral (a) and ventral (b ) views, Z PALN/867 ; also enlarged f x 5) ornamentation of the shel l (C); boulder E-036, Miedzyzdroje, P land .

7. Crushed phragmocone possibly attributable t0 the spe ies, with remains of a co loured ornamentation ("?); borchole Chlapowo IG (depth of 1039 m), Late Ludlovian, Poland.

Arionoceras valens (BARRANDE, 1868); Ludlovian, Poland;

a Reconstruction of the adult specimen;

b longitudinal section through a siphuncle, ZPAL N/661, erratic boulder of the graptolite limestone, Rozewie;

c frontal section through a siphuncle, ZPAL N/662 boulder of the same lithology and locality;

d medial section through a phragmocone, ZPAL N/659, borehole Bialopole IG, depth of 1670.7 m.