COAL MEASURE PLANT RECORDS.* 
MARY A. JOHNSTONE, 'B.Sc., F.L.S. 
Some time ago I collected a few plant fossils from a quarry 
belonging to the Bradford Brick Company and I have been 
asked to add the list to the existing Yorkshire records. Most 
of the specimens were found in clay nodules, embedded in the 
shales below the Better Bed Coal; some were on the flaky 
layers of shale itself. Mr. Kidston was kind enough to 
identify them, and the list is as follows :— 
Calamites varians Sherul. var. insignis Weiss. 
Calamites suckowt Bgt. sp. 
Calamites ramosus Artis. 
Sphenopteris obtusiloba Brogt. 
Sphenophyllum myriophyllum Crépin. 
Mariopteris muricata Schl. sp. 
Urnalopteris tenella Bgt. sp. 
Lepidodendron obovatum. 
Zetlleria delicatula Sherub. Sp. 
Zetlleria trichomanoides Kidston M.S. 
(Third locality for this). 
Calamites (Calamitina) varians, was so beautifully pre- 
served and presented features of so much interest, that I 
thought it worth a full description ; this may be found in the 
Proceedings of the Manchester Literary and Philosophical 
Society, Vol. 56, No. 17. 
The fossil is, in my opinion, the cast of piece of decorti- 
cated stem, the surface markings reproducing details of the 
exterior of the woody cylinder. There are present one com- 
plete and two incomplete groups of internodes of unequal 
length showing evidence of periodicity in their arrangement. 
The surface texture is longitudinally furrowed, the ridges 
representing the secondary xylem and the furrows the second- 
ary medullary rays. The nodal lines are marked out as 
ridges, along the top of which lies a chain of contiguous leaf- 
bases. The details of some of these can be made out, and corre- 
spond with regions to be found in microscopical preparations. 
The branch scars are arranged in whorls. as is typical of 
the sub-genus Calamitina; they are very closely crowded 
together, as in the case of the leaves ; the various markings 
within the scars can be identified by reference to petrified 
‘specimens. 
The significance of the variation in the length of the inter- 
nodes is one of the interesting questions connected with these 
calamites. 
* Given at the meeting of the Geological Section of the Yorkshire 
Naturalists Union, at Hull. 
1915 Jan. 1, 
