﻿76 



MR. S. S. BTJCKMAN ON CERTAIN 



[Feb. 1 910, 



Section III.— Stoke Knap. 



Hemerse. 



schloenbachi . 



ShirbuimicB , 



ipost-discitce , 

 discitce, 

 ■concavi, 

 bradfordensis, 

 murchisonee, 

 Ancolioceras 

 (pars) 



Ancolioceras 



(pars) 

 and scissi (?). 



opalinifo 



II. 



B. Woodward. 

 Numbers 

 supplied. 



Workmen's Terms. 

 Fossils inserted. 



(S. S. B.) 



Thickness 

 in feet inches. 



' Clay.' 



'Bagstone' 7 



[Terebratula stephan i, Colly rites ringens, 

 Parkinsonian] 



' Best Limestone ' 4 



' roadstone ' 1 



[Top planed off and covered with 

 oysters. Sonninia cf. adicra (Waagen). 

 S. ci.jissilobata (W T aagen).] 



' Waste ' 



[Clay, limestone, and marl in three 

 beds, irregular.] 



I 



/ ' Buildtng-Stone.' 



I [See p. 77 for details.] 



1 



■{ ' Bottom Bed.' 



I [To which some Building-Stone may 

 I be attached. Ludwigia Icevigata, 

 I Ancolioceras substriatum.\ 



6 f [The Sandy 



I Grits with 



7 ! Brachiopod 



8 ■{ Beds in the 



9 middle. Not 



10 ,. J economically 



Thickness. 

 (H. B. W.) 

 4 to 5 



about 8 



10 to 14 



6 to 8 



2 to 2^ 



11 



^worked.] (S. S. ~B.)J about 3 



The Beds 6-11 (Woodward) may, for distinction's sake, be called 

 the Sandy Grits, with Brachiopod Beds (8 & 10) in the middle. The 

 chief Brachiopods are — Terebratula ivhaddonensis \_ — i T. infra- 

 oolithica'~\, Zeilleria ivhaddonensis, Aulacothyris l blahei,' and Rhyn- 

 choneUa stepliensi (see the palseontological paper, pp. 101 et seqq.). 

 Of Ammonites which have been recorded from these Sandy Grits, 

 without precise horizon, are — Lioceras uncinatum and Canavarella 

 belophora (type) : there are many Ammonites in poor condition. 



These Sandy Grits are later than aalensis hemera, so far as my 

 collecting goes. They may be dated approximately as Ancolioceras- 

 scissi-opaliniformis ; but they have not been studied sufficiently for 

 present detailed work. The ferruginous clayey seam [9] of Wood- 

 ward suggests correlation with the Busty Bed of Burton Bradstock ; 

 possibly then the Brachiopod Beds (8 & 10) are a thickened develop- 

 ment of the Rusty Bed, and should really be dated as pre-scmi- 

 l>ost-opalin iformis. 



