PLATE 25 

 Rafinesquina sp. (p. 143) 



Whittery Shales, Whittery Quarry, Shropshire. 

 Fig. 1. BB 35496a. Latex cast of the interior of a brachial valve, x 3. 



Murinella sp. (p. 141) 



Meadowtown Beds, Little Weston, Shropshire. 

 Figs. 2, 3. BB 35421a, b. Latex cast of the exterior and the internal mould of a pedicle 

 valve, X5, Xf6. 



Furcitella sp. (p. 140) 



Whittery Shales, Whittery Quarry, Shropshire. 

 Figs. 4, 5. BB 35422a, b. Latex cast of the exterior and the internal mould of a brachial 

 valve, x 4. 



Rafinesquina delicata sp. nov. (p. 141) 



Meadowtown Beds, Quinton's Quarry, Shropshire. 

 Fig. 6. Para type, BB 35562. Latex cast of the interior of a brachial valve, x 2. 

 Figs. 8, 7. Paratype, BB 35559a. Latex cast and mould of the interior of a pedicle valve, 

 x 2-6. 

 Fig. 9. Paratype, BB 35560b. Latex cast of the exterior of a pedicle valve, x 2-9. 

 Fig. 10. Paratype, BB 35561a. Internal mould of a pedicle valve, x 2-9. 

 Fig. 12. Paratype, BB 35563a. Latex cast of the interior of a brachial valve, x 3-8. 



Meadowtown Beds, near Minicop Farm, Shropshire. 

 Fig. 11. Holotype, BB 35558a. Internal mould of a brachial valve, x 2-9. 

 Fig. 13. Paratype, BB 35564b. Latex cast of the exterior of a brachial valve, x 5-4. 



Bystromena perplexa gen. et sp. nov. (p. 146) 



Spy Wood Grit, near Middleton Church, Shropshire. 

 Fig. 14. BB 35366a. Latex cast of the interior of a pedicle valve, x 5-6. 



