Notes. 
6 1 1 
some appear to have been lost, but several have been recognized in 
the Museums of Cambridge, Scarborough, Whitby, York, Newcastle, 
Paris and elsewhere. 
The Author has been engaged during the last few years in examin- 
ing the Yorkshire Inferior Oolite Species, and an account of the 
flora — to be published as a British Museum Catalogue — is now 
passing through the press. The determination of the species is in 
nearly all cases based on the external characters, as the conditions 
of preservation were unfavourable for the petrifaction of the internal 
tissues. Cycadean plants are especially numerous, being represented 
by some species which must be classed with the Bennettiteae and 
by others of which the exact position cannot be definitely determined. 
The Ginkgoaceae include species of the genera Ginkgo and Baiera , 
while Br achy phy llum mamillare Brongn., and Pagiophyllum William- 
soni (Brongn.) may be mentioned as two of the more abundant Conifers. 
Among the ferns there are examples of the Matonineae, Schizaeaceae, 
Osmundaceae, Cyatheaceae, and other families, and Equisetites 
columnaris Brongn. and Lycopodites falcalus L. and H. represent 
the Equisetaceae and Lycopodiaceae respectively. A few more or 
less unsatisfactory fossils have been referred to the Brvophyta and 
Thallophyta. The absence of any Monocotyledons and Dicotyledons 
is a striking feature, while the flora as a whole presents a marked 
agreement with floras of Rhaetic and Lower Jurassic age described 
from various European and extra-European localities. The following 
list may serve as a guide to the nature of the vegetation which existed 
in the North-West of Europe during the latter part of the Jurassic 
Epoch : — 
Bryophyta : Marchantites eredus (Leek.). 
Equisetaceae : Equisetites columnaris Brongn., E. Beani (Bunb.). 
Lycopodiaceae : Lycopodites falcatus L. and H. 
Filicineae : Matonidium Goepperti (Ett.), Laccopteris polypodioides 
(Brongn.), L. Woodwardi (Leek.), Todites Williamsoni (Brongn.), 
Klukia exilis (Phil!.), Rujfordia Goepperti (Dunk.), Coniopteris 
Hymenophylloides (Brongn.), C. quinqueloha (Phill.), C. arguta (L. 
and H.), Diclyophyllum rugosum L. and H., Cladophlehis lohifolia 
(Phill.), C. denticulata (Brongn.), C. haihurnensis (L. and H.), Taeni- 
opteris vittata (Brongn.), T. major L. and H., Sphenopteris princeps 
Presl., -S’. Murrayana (Brongn.), S. Williamsoni Brongn., Sagenopteris 
Phillipsi (Brongn.). 
