140 ARBER : FOSSIL FLORA OF SOUTH YORKSHIRE COALFIELD. 
NAMK. 
Hori/on of the 
Top Hard Coal, 
Nottingham- 
shire. 
Horizon of the 
Barnsley Thick 
Coal, 
Yorkshire 
Sigillariostrobus rhombibracteatus , Kidst. 
ciliatus, Kidst. 
Sigillariostrobus, sp. 
b. 
X. 
X. 
Stigmaria ficoides (Sternb.). . 
S. reticulata, Goepp. 
S., etc. 
X. 
X. 
CORDAITALES. 
Oordaites borassifolius (Sternb.) 
C. principalis (Germ.) 
W. 
s. 
X. 
Artisia transversa (Artis) 
Cordaianthus pitcarnice (L. & H.) 
G. volkmanni (Ett.) 
C. sp 
w. 
s.' 
X. 
X. 
X. 
Comparing the two floras, from localities at least forty miles 
apart, we find that they are remarkably alike. The Yorkshire 
records are the richer, especially in species of Calamites, Spheno- 
^hyllum, Sphenopteris, Odontopteris and particularly Sigillaria. It 
must, however, be remembered that Dr. Moysey's specimens were 
obtained from clay-ironstone nodules exclusively, whereas the 
plants known from Yorkshire were found in all types of lithological 
sediments. 
The following Nottinghamshire and Derbyshire species have 
not been obtained from the Barnsley Thick Coal in Yorkshire, 
though many of them occur on other horizons : — 
Calamites cf. C. goepperti (Ett.). 
C. cruciatus, Sternb. 
Annular ia radiata, Brongn. 
A. galioides, L. & H. 
Neuropteris acuminata (Schloth.). 
Zeilleria alvoldensis (Stur). 
Renaultia gracilis (Brongn.). 
Urnatopteris tenella (Brongn.). 
Eremopteris moyseyi n. sp. 
Corynepteris coralloides, Gutbier. 
Cordaites borassifolius (Sternb.). 
