226 MKSOZOIC 1 LOKAS OF IMTEI) STATKS. 



l.S'.M. ANpidiuin luttropliyUuin Font, (part, (|iiuad Cat. I'. S. >;at. iliis., No. 3992) 



ill Dilk'i- & Stanton: Loc. cit. (PI. LXV. Fig. 7.) 

 1895 [lo96]. CladopJilehis indinahi Font.? in Stanton: Bull. V . S. Geol. Snrv.. No. 



\Xi, p. lo. (PI. LXV, Fig. ,S.) 

 1895 [1S96]. Aspidium hctfrophiiUurn Font, (part, (jiioad Cat. U. S. Nat. Mns., No. 



3992) in Stanton: l>oc. cit. (PI. LXV, Fig. 7.) 



Several specimens of a small fern that seems to he Cladophlehis jiaira 

 were found. This fern of the Lower Potomac l)eds of Virginia appears 

 to he rare in the collections now Ijeing described. 



The most complete specimen is that figured on PI. LXV, Fig. 5. It 

 is the terminal portion of a penultimate pinna, which shows several 

 ultimate pinnse that pass into pinnules toward the tip of the principtil 

 pinna. The ultimate pinniie in the lower portion of this fragment cany 

 small, triangular, falcate pinnules which, although they are fc.r the most 

 part poorly preserved, show the character of C. parva. Fig. 6 represents 

 a fragment of an ultimate pinna from low down on the frond, where the. 

 pinnules are of larger size than those represented in Fig. 5. These are 

 exactly like the pinnules of the Lower Potomac formation. 



The plant occurs at localities Nos. 9, IS, and 22. 



Cladophlebis Bm)wxi.\NA (Uunker) Seward. 

 PI. LXV, Figs. 9-11. 



1846. Pfcopfcris liniiriilaiHi Dnnk.: Monogr. d. Norddcutscli. Wealdenbildung, p. 5, 



pi. viii, fig. 7. 

 1874. AletJiopteris ? Brotvniaiia (Dunk.) Scliiui]).: Pal. Vt'g., Vol. Ill, j). .502. 

 1894. CladopTileUs Browniann (Dunk.) Sew.: Wealden Flora, Pt. I, p. 99, pi. vii, 



fig. 4. 

 1894. Cladopihlebis indirw.ta Font. ? in Diller & Stanton: Bull. Geol. Soc. Am., Vol. V, 



p. 4o(J, ((uoad Cat. U. S. Nat. Mus., No. 3996. (PI. LXV, Fig. 9.) 

 1895 [1896]. CladopMehis indinata Font.? in Stanton: Bull. V. S. Geol. Surv., No. 



133, p. 15, <iuoad Cat. U. S. Nat. Mus., No. 3996. (PI. LXV, Fig. 9.) 



From the mmiber of specimens found, and the localities yielding 

 them, a small fern identical with CladopMehis Brotvniana must have 

 been one of the most characteristic plants in the flora of the time of 

 deposition of the Shasta formation. The fossils of this species are, 

 however, quite imperfect, being found only in the form of small fragments 

 of ultimate pinnae. They are ntmierous enough to show the character 



