126 CONTRIBUTIONS TO PAL.EONTOLOGY 



Sequoia longifolia Lesquereux = Araucarites longifolia (Lesquereux) Dorf, n. comb. 



Trochodendroides sp., Dorf, 1940 = Cercidiphyllnm ellipticum (Newberry) Brown. 



Viburnitm anomalinervum Knowlton of Dorf, 1940 (not Knowlton) = Vitis stantoni (Knowlton) 



Brown. 

 Viburmim platanoides Lcsquereux = Platanophyllum plalanoides (Lcsquereux) Dorf, n. comb. 

 Viburnum richardsoni Knowlton = Vitis stantoni (Knowlton) Brown. 

 Viburnum whymperi Heer (in part) = Vitis slantoni (Knowlton) Brown. 

 Zizyphus ripleyensis Berrj' of Dorf, 1940 = Phylliles sp. 



DESCRIPTIONS 



Family POLYPODIACEiE 



Genus ASPLENITES Goeppert 



|ilcnitcs tenellum (Knowlton) Dorf, n. comb. 



(Plate 4, Figs. 1-3) 



Asplmium. tenellum Knowlton, U. S. GeoL Surv. Bull. 163, 19, pl. 3, figs. 1, 2, 1900. Brown, U. S. Geol. Surv. 

 Prof. Paper 189, 245, pl. 48, fig. 1, 1939. Dorf, BuU. Geoi. Soc. Amer., vol. 51, 222, 1940. 



There are 3 specimens in the collections which are similar in all essential characters to the 

 figurecl and type specimens of this species. In plate 4, figure 3 are shown the delicate pinnules 

 bome alternateiy on a slender pinna. The details of the venation and margins are shown in the 

 enlarged pinnules, figures 1 and 2. 



The general shape, size, and venation of these pinnules are suggestive of HymenophyUum 

 confusum Lesquereux from the Denver flora; ' this may be distinguished, however, by the decurrent 

 extension of the pinnules along the pinna;, a character not seen in any of the known specimens of 

 Asplenites tenellum. 



The original type specimens of A. tcnellum wcre obtaincd from the Montana group (Mcsa- 

 verde formation) of southeastern Wj^oming. It has since been encountered only in the Colgate 

 flora of eastern Montana and in the type Lance of the present report. 



Although thcsc pinnules are undeniably similar to those of several living species of Asplenium, 

 it scems advisable to rcfcr this spccies to the less positive Asplenites, at least until specimens of 

 fertile parts are discovcred. 



Occwrrewce— Localities P3853, P3858. 



Collection—V. C. Mus. Pal., Plesiotypes Nos. 2450, 2451, 2452. 



Genus WOODWARDIA Smith ? 



Woodwardia? crenata Knowlton 



(Plate 4, Figs. 5, 6) 



Woodwardia crenala Knowlton, U. S. Geol. Surv. Bull. 163, 22, pl. 3, fig. 3, 1900; U. S. Geol. Surv. Prof. Paper 



101,246, 1917. 

 Woodwardia sp., Knowlton, BuII. Geol. Soc. Amer., vol. 8, 154, 1897. 



There are 6 specimens of fern fragments which I cannot distingui.sh from thc type and 

 described specimens of this species. As is shown in thc fragments here figured, thc pinnulcs arc 

 distinctly crcnatc and the venation is precisely as in the original type. The absence of fincr 

 serrations in the Lance Creek specimcns is not considered sufficicntly important for specific sepa- 

 ration, in view of the variations of this kind notcd in pinnulcs of modern ferns. 



I have questioned the refercncc of this spccics to the gcnus Woodivardia. Therc is, to be 

 sure, a resemblance to several living spccies of this gcnus, but there is also rcsemblancc to the 

 living Onoclea. A definite generic reference can probably not be made until fruiting organs have 

 been found in attachment to pinnules of this form. 



' Knowlton, F. H., U. S. Geol. Surv. Prof. Paper 155, 17, pl. 1, fig. 4. 1930. 



