SELLARDS.| Fossa Plants, Upper Paleozoic, Kansas. 443 
general form usually well preserved. The venation, however, 
is indistinct on most of the specimens. One frond, fortunately, 
has the venation well preserved. The rachis, seen from the 
upper side, is marked by a broad, shallow groove; from below 
it presents a broken, striate appearance, due to the decurring 
midveins of the pinnules. With several good specimens at 
hand, it is possible to follow the development from the young 
to the full-grown frond. The pinnules, at first close, ovate, 
and oblique, become, by the growth of the frond, more distant, 
elongate, curved back at the apex, lax in appearance, reaching 
at last an extremely curved form. 
Formation and locality: Wellington shales, Banner City, 
Dickinson county. 
Glenopteris lineata Sellards.™ 
Fronds of medium size, deeply pinnatifid or pinnate, some- 
what fleshy, narrowly elliptical, narrowing gradually to a long 
apex, petiolate at the base. MRachis strong, longitudinally 
striate or wrinkled, half cylindrical or flattened, broken off 
short at the base. Pinnules alternate, close, or more distant in 
the middle of the frond, rounded above the base, united by a 
decurring wing to the pinnule below, situated very obliquely on 
the rachis, linear-lanceolate, straight, very symmetrical above 
the base, narrowing gradually and regularly from the base to 
the apex; borders straight and entire, apex rounded, or cut off 
wedge shaped. Pinnules reduced in passing to the apex, be- 
coming shorter, proportionally wider, at last not more than 5 
or 6 mm. long, 4 or 5 mm. wide, and triangular in shape. Mid- 
vein of the reduced pinnule still evident, continuing to the 
apex. Pinnules also reduced towards the base of the frond as 
in other species of the genus, lower pair reflexed. Midvein 
straight, deep, and narrow, deeply immersed, continuing quite 
to the apex of the pinnule, decurrent at the base; lateral veins 
obliterated in all the specimens yet obtained by the thick, longi- 
tudinally wrinkled substance of the frond. 
The species is described from four specimens, two of them 
representing the apical part of the frond, but with the extreme 
apex of both broken; the other two specimens represent the 
middle and basal parts of the frond. 
Formation and locality: Wellington shales, Banner City, 
Dickinson county. 
297. Kan. Univ. Quarterly, vol. 9, pp. 185, 186, pl. 87, fig. 3; pl. 38, figs. 4, 5, 1900. 
