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STRATIGRAPHICAL DISTRIBUTION OF 



A Table showing the Stratigraphical distribution of 



FAMILIES, 

 GENERA, AND SPECIES. 



Fam. CidaridjE. 

 Cidaris Edwardsii, Wright 



Ilminsterensis, Wright . 



Mooreii, Wright . 



Fowleri, Wright 



Boucbardii, Wright 



Wrightii, Desor 



confluens, Forbes . 



Bradfordensis, Wright . 



florigemma, Phillips 



Smitbii, Wright 



spinosa, Agassiz 



Boloniensis, Wright 

 Rabdocidaris Moraldina, Cotteau 



maxima, Miinster . 

 Diplocidaris Desori, Wright . 



Wrigbtii, Desor 



Cotteauana, Wright 



Fam. Hemicidarid^;. 

 Hemicidaris granulosa, Wright 

 pustulosa, Agassiz . 

 Stokesii, Wright . 

 Luciensis, cTOrbigny 

 minor, Agassiz 

 Ramsayii, Wright . 



LOWER DIVISION. 



Lias. 



Lower 

 Lias. 



Middle 

 Lias. 



Upper 

 Lias. 



Murchi- 

 souiezone. 



Inferior Oolite. 



Humphrie- 

 sianus 

 zone. 



Parkinsoni 

 zone. 



Great Oolite. 



Fuller's 

 Earth. 



Stonesfield 

 Slate. 



Great 

 Oolite. 



Bradford 

 Clay. 



