Orthoceras wahlenbergi BOLL, 1857 . .Volkhovian, erratic boulders of Baltic origin, Polan
1. Longitudinal section through an adult specimen. ZPAL N/408; P. originalis Zone, boulder E-22 7, Rozewie.
2. Possible representative of the species, IG 8. 11. 261 ; P. originalis Zone, Opatow,
3. Longitudinally broken adult phragmocone, ZPAL N!40 ; Paroistodus orlginalis Zone, erratic boulder E-251, Wejherowo.
4. Adult specimen, IG 8. II. 363; P. originalis Zone, Opaiów.
5. Phragmocone ZPAL N/415; Amorphognathus variabilis Zone, erra ic boulder E-11 7, Rozewie.
6. Phragmocone ZPAL N/414, also a 2 x enl arged part of its shell (b) ; Earl y Volkhovian, boulder E- I3(, . Miedzyzdroje.
7. Specimen ZPAL N/40J; Kundan
erratic boulder E-228, Miedzyzdroje ; x 2.