= 57 = 
intermediate between Glossopteris and Gangamopteris and tend to 
show a genetic relationship between these, the two most characteristic 
of the older Gondwana genera. 
Locality : Estrada Nova near Minas, Santa Catharina. About 
135 meters above the granite, or 145 meters below the Iraty black 
shale. Lot 3923. 
Glossopteris sp. 
Pl. vii, figs. 5, 5a e 6 
Associeated with the fragments of Glossopteris Brotoniana from 
the roof of the Irapua coal in the state of Rio Grande do Sul I 
find a single specimen representing a pedicellate scale-frond pro- 
bably belonging to Glossopteris. The frond is strongly concave 
convex and bears a considerable quantity of granular carbonaceous 
matter on its surface. That it was very thick and fleshy is further 
shown hy the difference in character between the convex and the 
concave surfaces. The impression of the convex surface of the leaf, 
shown in Pl. VII, fig. 6. presents a relatively smooth though 
well rounded topography, traversed by rather close dense nerves, 
or nerve fascicles, radiating sinuately and occasionally anastomos- 
ing in generally elongated, acute-angled, irregular meshes. 
Near the borders there are occasional irregular depressions. The 
border itself was evidently thick, but on this side of the mold it is not 
at all clear. The nerves, which converge at the base and pass down 
the narrow pedicel, bear, in the lower part of the leaf, some resem- 
blance to the fascicles in Ottokaria. 
The impression of the dorsal (?) surface of the organ, shown 
in fig. 5, is rather deeply concave and, over the greater portion 
of its interior, is marked by larg, rather strongly impressed, poly- 
gonal pits. These, as shown in the photographic enlargement, 
Pl. Vil, fig. 5a, and are separated by sharply defined, rather thick, 
boundary walls. The amount of adherent carbonaceous matter 
is considerable, but its structure is obscured by the granulated 
condition of the surface of the rather coarse, arkose matrix. 
The border of the fossil is slightly backward rolled, espeeially on 
approaching the narrow pedicel where it appears to be obscurely 
and narrowly round-lobate, in a way suggastive of the border of 
Ottokaria. 
