Figure 56 Devonian brachiopods and pelecypods. (Brachiopods, A-M). 

 A Spirifer disjunctus, -x. l / 2 . B S. murchinsoni, x^4. C Ambocoelia umbonata. 

 D Spirifer perlamellosus, x^. E, F Cyrtina hamiltoncnsis. G Spirifer 

 nip,cronatus,_ x^. H, I Hypothyris cuboides (Hypothyridina venustula), 

 x.$i-. J Spirifer raricostatus. K Tropidoleptus carinatus, xj4- L Eatonia 

 tnedialis, x 1 /,. M Productella hirsuta, x^4. N Cimitaria angulata, xj^. O 

 Goniophora hamiltoncnsis, xj4. P Buchiola retrostriata, x4J^. Q Lunulicar- 

 dium acutivostrum, xJ4. R Nuculites oblongatus, xj^. •£ Grammysia bisul- 

 cata, xJ4. T Modiomorpha concentrica, x}4. 



