Fig. 13 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf

Fig. 13. Serial sections of two shells of Coeloterorhynchus dillanus (Schmidt, 1941), ZPAL Bp 60/32 (A) and ZPAL Bp 60/33 (B), middle Wietrznia Beds of Wietrznia Ie. Numbers refer to distance in mm from ventral umbo.