402 



Table to show the Distribution 



04 \ 



i\ 



Belemniiella 

 miicronata. 



Marsiipiies. 



Holasier planus. 



Terebratulina 

 gracilis. 



R hynchcnella 

 Cuvieri. 



( Belemniiella 

 plena. 



Holaster 

 sitbglobosus. 



Rhynchonella 

 Martini. 



Scaphites cegualis. 



Plocoscyphia mce- 

 andrina, etc. 



Yorkshire. 



Soft chalk without flints, 



320 feet. 

 Bridlington. 



Chalk -with imperfect 



flints, 120 feet. 

 Flamborough Head. 



Chalk with many tabu- 

 lar flints, 50 feet. 



Breil Head. (Barren 

 zone.) 



Slaty chalk with 

 thin flints. 



Hessle. 



Creamy chalk 

 with nodular 

 flints. Hard 

 Speeton chalk. 



(Not recognized.) 



Grey chalk with red 

 bands and without 

 flints, 100 feet. 



Burdale and Speeton. 



Red chalk, 4 to 6 feet. 

 Belemniies minimus. 



Norfolk. 



Chalk with flints and 



paramoudras, 500 feet. 

 Norwich, Trimingham. 



Chalk with tabular 

 flints, etc., 200 feet. 



Wells, Walsingham, 

 Diss. 



Chalk with flints, 100 



feet. 

 Swaffham, Creake, 



Stanhoe, Burnham. 



Chalk with flints, 100 



feet. 

 Swaffham, Docking, 



Bircham Newton. 



Chalk, 100 feet. 

 Sedgeford, Thetford. 



Chalk, 100 feet. 

 Shernborne. 

 hioceramtts mytiloides. 



Hard Chalk, 50 feet. 

 Hunstanton, Stoke 

 Ferry. 



Totternhoe Stone, 

 Roydon. 



" Sponge " Bed. 

 Hunstanton. 



Red chalk, 4 feet. 

 Hunstanton. 



Cambridgeshire. 



White chalk with many 



layers of flint. 

 Micraster cor-bovis. 



Chalk Rock, 6 to lofeet. 

 Soft white chalk with 

 flints, 50 feet. 



Hard compact chalk 

 and grey marl with 

 few flints, 100 feet. 



Vandlebury beds. 



Even-bedded white 

 chalk with scatterei 

 flints, 5o to 70 feet. 



/. mytiloides. 



Melbourn Rock, lofet 



Grey laminated and 

 marly chalk, 5 feet. 



Hard cream-coloured 



chalk, 80 feet. 

 Totternhoe stone, 12 to 

 15 feet. 



Grey marl, 50 to 60 feet. 



Chloritic marl with 

 phosphatic nodules, 

 10 inches or more. 



Cambridge Greensand. 



