Box 25, Folder 4: Ferns III

[Sketch-Dyctiopteris obliqua].

Dyctopteris obliqua Bumbury Quart. Jour. Geol. Soc. vol 3 Lesq. Geol Penn 2 p 861, pl 8 fig 6

Frond bipinnate; pinnoe linear; pinnules cordate at the base, oblongobtuse, slightly narrowed and scytheshaped above, very deciduous, and attached to the rachis by the base of the medial nerve, which ascends only to half its length

Coal Measures Penna Ohio

Genus Glossopteris, Bronguiart Veg. Fossils Am Jour. Sc. Vol. 7 p. 181

Frond disposed on the same plane, symetrical [symmetrical], simple, entire, traversed by a single thick, vanishing, median nerve, without distinct secondary nerves.

Glossopteris Phillipsii Brongniart. Hist. Veg. Fos. p 225. Lind. & Hutton; Hall, Fremonts Report p 305 pl 2 fig 5 Pecopteris longifolia, & P. paucifolia, Philips.

Leaves linear-lanceolate, narrow, narrowing towards the base and apex; nervules obllique, dichotomous, lax, scarcely distinct, subimmersed in the thick parenchyma. -- Brong. A plant with four-parted leaves; leafets linear-lanceolate or elongate-oval; veins many times dichotomous, anastomosing into a sort of net work. -- Lindl. & Hutton. (Probably a different [?])

L. of leafets 1.5 to 4.0

Carboniferous? (Or upper [oolite]?)

Lat. 41 1/2 [degree symbol] Long. 111 [degree symbol] in light gray indurated clay.

Also in Europe in upper Oolite)