4 o 



TYPE AMMONITES— III 



Mar. 



i wh., almost complete ; venter rather rounded ; flat area not shown. 

 Geol. Surv. Engl. 26087 ; Kellaways ; Kell. R. ; brephomorph (this sp. ?) ; 

 No. 26101, Id. ; colomorph (this sp. ?). 



P. fracidus, nov. Like P. fulvus, but has the umbilicus more 

 closed in the young stage, consequently the umbilical excentricity is 



TABLE II, CHRONOLOGY, PROPLANULITES 



greater. Geol. Surv. Engl. No. 26082, Chippenham ; Kell. R. (f) 

 from near top, judging by decomposed condition .; Holotype ; S. 50, 

 42, 24, 28; 76, 41, 24?, 34"5 ; Li at 17-5, c. 25 per cent. — lopsided; 

 body-ch. c. 5/8 whorl, nearly complete ; No. 30530, Id., " Oxf. Clay " 

 [Kell. R. matrix] ; a brephomorph, this sp. ? 



