94 
EXPLANATION OF PLATE 56. 
retains the bark-scales modified by pressure of the 
Strobilus or cone that grew from the centre of the 
disk. The upper portion of the Scar is without in- 
dications of bark-scales, and is covered with radi- 
ating furrows, impressed on it by the long slender 
scales of the base of the Strobilus, which have obli- 
terated the bark-scales.* 
The character of this scar approaches to that of 
Fig. 5, but its proportions differ, measuring SJ 
inches in the longer, and inches in the shorter 
diameter. The scaly bark (which in Fig. 5 has 
been almost entirely removed from the area of the 
scar), is preserved on the lower portion of the disk 
of Fig. 6. Scale two-ninths. (Original.) 
Fig. 6'. Oast of Ulodendron Conybearii {nobis) formed 
by Pennant sandstone of the Coal formation at 
Stapleton near Bristol. This cast expresses the 
exact form of an oval scar, or cavity on a stem 
from which a cone had fallen off. 
The disk is covered with slight ridges and furrows, 
radiating in all directions from the point of inser- 
tion of the cone, and formed by pressure of its 
lowest scales upon the portion of the stem to which 
it was attached. Beneath the point of insertion, a 
* The portions above and below the line drawn across Fig. 6, are 
copied from two scars in Rhode’s figure. Rhode considers these 
impressions to be flowers, and the compressed bark-scales to be the 
Petioles of the flower, and has represented the trunk in an inverted 
position. 
As, in every species of Ulodendron which we have seen, the fur- 
rows produced by scales at the base of the cone, are deepest on the 
upper portion of the Scar, we infer from this circumstance that the 
cones were inclined upwards and inwards, with their axis approxi- 
mating to that of the stem from which they issued. 
