GEOLOGICAL SURVEY OF THE TERRITORIES. 421 



of Rliamni ; R. ohovatus, R. Clehunii, R. Goldianus, &c., with multinerve 

 leaves comparable to tbose of some Bridelm. The poiuts of analogy 

 are Dot precise^, they are merely recorded for directing further researches. 



Description of species of fossil-plants from the Cretaceous of Kansas. 



« 



The specimens from which the following- species are described were 

 obtained by myself from two localities: 1st. From nine miles above 

 Salina, in the Salina Valley, where I was kindly directed by Professor 

 B. F. Mndge, of Manhattan College. 2d. From sis miles south of 

 Fort Harker, where specimens of fossil-plants are found in abundance, 

 but over a limited area. This locality was discovered and first explored 

 by Mr. Charles Sternberg, who resides in the vicinity, and who a few 

 years ago presented fine specimens from it to the Smithsonian Institu- 

 tion. Some of these specimens have been previously used for descrip- 

 tion, especially of Sassafras, there represented in a multitude of forms. 

 The vegetable remains are found at both these places, as also east of 

 Fort Harker, in a hard, more or less soft-grained, shaly, red, ferruginous 

 sandstone, a member of the Dakota group of Messrs. Meek and Hayden. 

 The number of specimens, generally fine, is large, proportionally to the 

 number of species which they represent. 



ZONAEITES DIGITATUS, Brgt. 



Frond flat, dichotomous, branches of the same size or broader ihan 

 the main axis, diverging in acute angles, linear, entire, obtuse, slightly 

 enlarging upward. 



The divisions or branches of this species are somewhat broader than 

 in the specimen figured and described by Brougniart, Veg. Foss., ]). 61, 

 PI. ix, Fig. 1. The whole frond, as preserved, is 9 cent, long, its base 

 slightly narrowed, the divisions 1 cent, broad, the angle of divergence 

 about 30O. 



I have already remarked that the relation of this form to other kinds 

 of vegetables is not as yet ascertained, Schenk considering it as a fern. 

 This supposition is inadmissible on account of the connection of these 

 remains with animal, deep marine fossils. I am even uncertain if it 

 represents a vegetable form, and would rather consider it as a sponge. 

 It has, indeed, a punctate or perforated-like surface, an appearance 

 which, however, may be caused by the porous compound of the stone. 

 I found it about 100 feet above the red shale of the Dakota group in a 

 shaly limestone especially formed of large shells of the Fort Benton 

 group. 



HyjVienophyllum Cretaceum, sp. nov. 



Frond linear-lanceolate, bipinnately divided ; piunte slender, from a 

 narrow, smooth, convex rachis ; wedge-form, erect, alternately lobed. 



The lobes are small, truncate at the top, cuneate to the base, the 

 nervation dichotomous, one branch ascending to the point of each lobe. 

 It resembles Sphenopteris furcata, Brgt., of the Carboniferous measures. 

 8plienopteris corrugate, Newb., is apparently described from a small frag- 

 ment of this species. — Fort Harker. 



Gleichenia Kurriana (?) Heer, Mol. Fl., p. C, PI. ii. Fig. 3. 



• 



Frond pinnate; pinna.^ linear, long, piunately lobed ; pinnules connate 

 at base, alternate, oblong, obtuse; nervation pinnate ; secondary' veins 



