Letheae Geogn., Stuttgart, vol. 1, 1834, p.'32, pl. viii, fig. 9, a, b. D. White: Bull. Geol. Soc. Am., vol. II, 1900, p. 171. [Allegheny and Conemaugh formations.]
Sphenophyllum furcatum (Lindlev & Hutton) Geinitz.
Furstl. Jablon. Ges. Preisschr., No. 5 (Fl. Hain.-Ebers. & Floeh. Kohl.), Leipzig, 1854, p. 36, pl. i, figs. 10-12; pl. ii, figs. 2, 1. D. White: Bull. Geol. Soc. Am., vol. 11, 1900, p 161. [Pottsville group; Kanawha formation.]
Sphenophyllum tenue D. White.
Twentieth Ann. Rept. U. S. Geol. Surv., 1898-'99, pt. 2, 1900, p. 900, pl. cxci, figs. 6, 7. D. White: Bull. Geol. Soc. Am., vol. 6, 1895, p. 315. [Pottsville group; Quinnimont formation.]
Species characteristic of lower Pottsville and basal middle Pottsville in the central and northern Appalachian regions.
Sphenophyllum angustifolium (Cermar) Goppert.
In Bronn, Naturgeschte d. drei Reiche, vol. 3 (Nomencl. Palaeont.), 1848, p. 1166. Millspaugh: Bull. No. 24, W. Va. Agric. Exp. Sta., Morgantown. 1892, p. 526. [Dunkard formation (Permian).]
Sphenophyllum oblongifolium (Germar & Kaulfuss) Unger.
Gen. et Spec. P. Foss., 1850, p. 70. Fontaine & I. C. White: Second Geol. Surv. Pa., Rept. Progr. PP, 1880, p. 38. [Dunkard formation (Permian).]
Sphenophyllum longifolium (Germar) Geinitz & Gutbier.
In Reichenbach, Gaa von Sachs. (Verst. Obersachsen), 1843, p. 72. Fontaine & I. C. White: Second Geol. Surv. Pa., Rept. Progr. PP, 1880, p. 38. [Dunkard formation (Permian).]
Sphenophyllum Thoni Mahr.
Zeitschr. Deutsch. Geol. Ges, vol. 20, 1868, p. 433. pl. viii. D. White: Buil. Geol. Soc. Am., vol. 11, 1900, p. 172. [Dunkard formation (Permian).]
Sphenophyllum Fontaineaum S. A. Miller.
North American Geol. & Palaeont., Cincinnati, 1889, p. 141. [Dunkard formation (Permian).]
This is is the plant described as Sphenophyllum latifolium
Fontaine & I. C. White, a preoccupied name, in the Second Geol. Surv. Pa., Rept. Progr. PP, 1880, p. 36, pl. i, figs. 10-11.
Sphenophyllum filiculme Lesquereux.
Boston Jour. Nat. Hist., vol. 6, 1854, p. 415. Fontaine & I. C. White: Second Geol. Surv. Pa., Rept. Progr. PP, 1880, p. 37, pl. i. fig. 8. [Dunkard formation (Permian).]
Sphenophyllum tenuifolium Fontaine & I. C. White.
