Box 25, Folder 4: Ferns III

Sphenopteris laxus, Hall, N.Y. Geol. Rep. p 274 fig. 1.

Upper Silurian-Chemung Group

Pine Valley Chemung Co. N.Y.

Sphenopteris Lesquereuxii, Newberry Annals of Science p. Lesq. Geol. Penn 2 p 862 pl. 10 fig 1

Frond bipinnately divided; pinnae alternate, long, flexuous, lanceolate; inferior pinnules cordate-oval, distant, pinnately 3 to 5 lobed, or undulate; superior ones oval, or half round, confluent and decurrent, entire; nerves dichotomous, arched, obsolete; medial nerves slender & undulate; rachis irregularly & deeply dotted or tuberculate.

Coal Measures. Common Mauch Chunk Pa. Ohio

Sphenopteris Mantellii

Carboniferous Wilksbarre Pa