142 ARBER : FOSSIL FLORA OF SOUTH YORKSHIRE COALFIELD. 
The Alton and Belperlawn Coals persist into the central 
district, where the former is known as the Gannister or Halifax 
Hard Coal ; a seam of special interest to Palseobotanists,' on 
account of the calcareous nodules containing plant petrifactions, 
which are associated with this seam, near Halifax. 
The following species were obtained from the horizon of the 
Kilbum Coal at Trowell, T, (Nottinghamshire) and Stanley, S, 
(Derby) Collieries, b}^ Dr. Moysey : — 
NAME. 
N. Derby 
and 
Xottinghani- 
shire. 
1 
* Y orkshire. 1 
Equisetales. 
Calamites cisti, Brongn. 
T. 
C. varians, Sternb. . . 
T. 
C. sp 
T. 
Sphenophyllales. 
SphenophylluTn sp. 
T. 
Pteridosperme.^: and Primofilices. 
Neuropteris osmundce, (Artis) 
T. 
i 
N. obliqua, Brongn, 
T. & S. 
1 
N. heterophylla, Brongn. 
T. 
M. G. 
N. [Cyclopteris) sp. 
T. 
Alethopteris lonchitica, (Scholth.) . . 
T. 
m". G. 
Mariopteris muricata, (Scholth.) . . 
T. 
M. G. 
Pecopteris miltoni, (Artis) . . 
S. 
Rhacophyllum sp. 
T. 
Rhabdocarpus elongatus, Kidst. 
T. 
Lycopodiales. 
I 
Lepidodendron lycopodioides, Sternb. 
T. 
X. 
Sigillaria discophora, (Konig) 
T. 
X.+M. G. 
Lepidophyllum sp. 
T. 
Lepidostrohus sp. 
T. 
CORDAITALES. 
Artisia approximata, (Brongn.) 
T. 
M. G. ; 
1 i 
* In this cohimn, the "X" indicates that the species has been recorded by Dr. Kidston from 
the Lower Coal Measures, and '•M.G.," from the Millstone Grit of the Central district 
in Yarkshire. 
