Fic. 
10. 
PIG ATR XOXO TT: 
Macropoma mantelli, Agassiz; head with outer bones removed, right 
Turonian zone; Lewes. Mantell Collection 
(B. M. no. 4237). fir., frontal; pa., parietal; pas., parasphenoid ; 
side view, nat. size. 
ptq., pterygoquadrate ; spl., splemal; sty., stylohyal. 
Ditto; spatulate anterior end of parasphenoid, oral view, nat. size. 
Ibid. Enniskillen Collection (B. M. no. P. 3352). 
Ditto; supposed vomer, posterior and (3 a) oral views, nat. size, with 
(3b) some teeth four times nat. size-—Ibid. Mantell Collection 
(B. M. no. 4270). 
Ditto; right pterygoquadrate, inner or oral view, nat. size, with (4 @) 
some teeth nine times nat. size—Ibid. Mantell Collection (B. M. 
no. 4246). 
Ditto; left mandibular ramus, outer and shehtly lower view, nat. size.— 
Chalk; Kent. Mrs. Smith’s Collection (B. M. no. 49094).  ag., 
angular ; cor., outline of coronoid ; d., dentary; qu., articular end 
of quadrate ; spl., cavity closed inside by splenial; v., hinder end of 
ossified meckehan cartilage. 
Ditto ; left angular bone (ag.) of mandible, outer view, showing articular 
(art.) within, nat. size.-—Hneglsh Chalk. Beckles Collection (B. M. 
no. P. 6454). 
Ditto; symphysial end of right mandibular ramus, lower view, showing 
infradentary plate (id.) below the dentary (d.) and angular (ag.), 
three halves nat. size. 
B. M. no. 48851. 
Ditto ; right coronoid, inner or oral view, nat. size—Turonian zone ; 
Lewes. Mantell Collection (B. M. no. 4246). 
Ditto; lower view of head and pectoral arch, nat. size-—Enelish Chalk. 
Beckles Collection (B. M. no. P. 6455). el., clavicle ; cop., copula ; 
gu., gular plate ; icl., infraclavicle ; sc., scapular arch. 
Ditto; right gular plate, lower view, nat. size—English Chalk. Ennis- 
killen Collection (B. M. no. P. 4548). 
Turonian zone ; Whorne’s Place, Rochester. 
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