BUCKMAN 
UPPER TOARCIA^^ BEDS. 
211 
able fragment of an ammonite from the Serpula-Bed of Blea Wyke 
(Jermyn Street Museum, 4,423) which has been quoted as 
Am. aalensis var. moorei^ works out, from radial line and signs of 
a hollow keel, as probably a fragment of P. orhignyi ; but there 
is not much evidence in this, even if the latter identification were 
certain, for the specimen is probably derived. 
It is now possible to put the Yorkshire and Cotteswold 
strata side by side. 
YORKSHIRE. 
Yellow Bods 
COTTESWOLDS. 
Ironshot Stone 
Blackish 
Mudstone 
DATE, 
Dunwrtierice 
d is pans i 
stmckmanni 
striatuli 
Yellow Beds 
Grey Bed;^ 
Striatulus -Shales 
Grey Beds . . . . Mudstone f 
cr^ ■ ^ J c^^ i I Yellow Stone 
Strtatulus-Slmle. . . ^ ^^^^^^ g^^^^ 
The following is the Ammonite fauna of the Yorkshire strata : 
Dumortieria extern ico statu (Branco). 
D. aff. niulticostata S. Buckman. 
Polyplectus cf. pietralatce Parisch & Viale, 
(not quite so triangulate)- 
^Pseicdolioceras cf. gradratum S. Buckman. 
Hudlestonia wykiensis nom. no v. 
H. cf. wykiensis nom. nov. 
H. affinis (Seebach). 
H. aff. affinis (Seebach). 
PJdyseogramnioceras dispansum (Lycett). 
Pseudolioccras sp. nov. 
Pseudogrammoceras latescens (Simpson). 
Phlyseograynmoceras orhignyi (S. Bvickman). 
Pseudolioceras compactile (Simpson). 
Gratnmoceras striatulum (J. de C. Sowerby). 
^G. toarciense (d'Orbigny). 
Hudlestonia wykiensis, nom. nov. The new name is 
given to H. sinon, S. Buckman (non Bajde), Mon. Inf. Ool. Amm. 
(Pal. Soc, 1889, p. 227, Plate XXXVIII, fig. 13-16). The 
identification was only provisional, based on one poor specimen. 
The omissions from the list of Yorkshire species of Ammonites 
are noticeable. There is no evidence yet of any of the moorei, 
aalensis, opaliniformis or scissi ammonite fauna : there is reason 
to suspect that some of these deposits are absent, unless they be 
found in the base of the Dogger. 
There is yet no evidence of any species of Hammatoceras , 
which is associated with P. dispansum in the Cottes wolds. It 
suggests that the association in the Cotteswolds is deceptive, and 
Rastall, Quart. Journ. Geol. Soc. LXI (1905), 414; Strangways, Ji 
Geol. Surv., 1892, p. 152. 
Rocks Britain, I, Mem. 
