p. 1

Pecopteris arguta Brongniart,
Veg. Foss. 1 p 303 t 108 fig 3
Lesq, Geol. Penn. 2 p 867 Polypodites
elegans, Gopp.

Frond pinnate; pinnae open,
straight, very long, close to each other;
pinnules equal, contiguous, united
at the base, linear, oblong, obtuse,
undulate-plicate on the margins;
secondary nerves simple, oblique
well marked, straight.

Coal Measures
Pottsville Pa
Rhode Island