EXPLANATION OF PLATE 56. 
95 
few small scales of the bark remain adhering to the 
Sandstone. Scale one-fourth. (Original.) 
Fig. 7. Portion of the Trunk of Favularia, one-fourth 
nat. size. This plant is distinguished by the tessel- 
lated appearance of the scales, which cover the space 
between each fluting of the Bark. In the centre of 
the area of each scale is a club-shaped scar, which 
gave origin to a leaf ; it was a dicotyledonous plant, 
probably allied to Sigillaria; and its stem must 
have been covered with a mass of densely imbricated 
foliage. In the Genus Sigillaria the leaves were 
more distant from one another. The Rows of scars 
are separated by a groove. Fig. 7. 5. ; their dispo- 
sition in the vertical direction is indicated by the 
line a. (Lindlej', Foss. FI. PI. 73.) 
Fig. 8. Reduced from Bindley and Hutton’s figure (PI. 
31) of the central portion of a Stigmaria ficoides, 
from Shale in the roof of the Jarrow colliery near 
Newcastle. We have here a view of the inferior 
surface of tliis curious plant. Its dome-shaped 
hollow central trunk, or stem, was three feet in 
diameter, and fitted to sustain horizontally in a 
floating position the numerous long branches by 
which it was surrounded ; these divide into two, at 
a certain distance from the Trunk. When perfect, 
and floating in water, its appearance must have 
resembled the form of an Asterias. On the two 
longest branches, a. d. is seen the longitudinal de- 
pression, which is usually adjacent to the small 
internal woody axis of these branches, and from its 
position in this fossil, we learn that the place of 
this depression was on the inferior surface of each 
branch. Scale one-twenty-fourth. (See V. I n 
476.) 
