This is an interesting offer. Here is the nice example of endemic Strophomenid brachiopod (ventral and dorsal valves)
- Eoplectodonta transversalis (Wahlenberg, 1818)
The specimen was found at Visby beds, Silurian (Ludlow) deposits of outcrop near Klinteberg, Gotland, Sweden. Reconstruction 0%. Shipping worldwide $10.