LANCE FLORA OF EASTERN WYOMING 145 



Family VITACE^ 



Genus VITIS (Tournefort) Linne 



Vitis stantoni (Knowlton) Brown 



(Plate 11, Figs. 5, 6; Plate 12, Figs. 1-6) 



Vilis stanloni (Knowlton) Brown, U. S. Geol. Surv. Prof. Paper 189, 252, pl. 56, figs. 1-5, 66, pl. 57, figs. 1-6, 



7a, pl. 58, figs. 1-4, pl. 59, fig. 6, 1939. Dorf, Carnegie Inst. Wash. Pub. No. 508, pt. I, 69, pl. 17, fig. 1, 



1938; Bull. Geol. Soc. Amer., vol. 51, 218, 222, 225, 1940. 

 Castalia sianloni Knowlton, U. S. Geol. Surv. Bull. 258, 147, pl. 19, fig. 4, 1905. 

 Vibumiim vulpinutn Knowlton, U. S. Geol. Surv. Prof. Paper 98, 92, pl. 18, fig. 1, 1916. 

 Vitis dakolana Berry, U. S. Geol. Surv. Prof. Paper 185-F, 130, pl. 26, figs. 4-6, pl. 27, 1934; Canada Geol. Surv. 



Mem. 182, 47, pl. 12, figs. 1, 2, 1935. 

 Vihurnum whymperi Heer. Lesquereux, Rept. LT. S. Geol. Surv. Terr., vol. 7, 225, pl. 61, fig. 23 only, 1878. 

 Viburnum richardsoni Knowlton, U. S. Geol. Surv. Prof. Paper 155, 126, pl. 52, fig. 8, pl. 53, figs. 1, 3-5, pl. 



54, figs. 2, 3, 1930. 

 Viburnuyn sp., Knowlton, Proc. Washington Acad. Sci., vol. 11, 207, 1909. 



Viburnum. anomalinervum Knowlton. Dorf, BuU. Geol. Soc. Amer., vol. 51, 218, 222, 225, 1940. 

 Greuriopsis tenuifolia Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 7, 258, pl. 40, fig. 14, 1878. 



Well-preserved specimens clearly referable to this species were collected from four localities 

 in the Lance Creek area. A suite of 34 specimens was obtained from Locahty P3857, where the 

 leaves of this species are among the dominant forms. 



This species has been so adequately described and discussed by Brown and Berry that no 

 additional comment is here necessary. It is apparent that these clearly defined leaves of re- 

 stricted stratigraphic range are useful as indices of late Cretaceous age. The species is now known 

 in the Judith River, Vermejo, Fox Hills, Whitemud, Colgate, lower Denver, lower Dawson, and 

 lower Medicine Bow floras, in addition to its abundance in the true Lance of both eastern Montana 

 (Hell Creek formation) and the Lance Creek area. It has never been reported in the extensive 

 Fort Union flora of the Rocky Mountain region, nor from other deposits of post-Lance age 

 elsewhere. 



Occurrence— Localities P3855, P3857, P3858, P3652. 



Colledion—V. C. Mus. Pal., Plesiotypes Nos. 2525, 2526, 2527, 2528, 2528a (counterpart), 

 2529, 2530, 2531; Nos. 2532, 2533. 



Family TILIACE.E 



Genus GREWIOPSIS Saporta 

 Grewiopsis saportana Lesquereux 



Gremopsis saportana Lesquereux, Rept. U. S. Geol. and Geog. Surv. Terr., vol. 7, 257, pl. 50, figs. 10-12, 1878. 



Dorf, Carnegie Inst. Wash. Pub. No. 508, pt. I, 70, pl. 13, figs. 1, 5, 6, 1938. Brown, U. S. Geol. Surv. 



Prof. Paper 189, 251, pl. 55, figs. 1-3, 4a, 1939. Dorf, Bull. Geol. Soc. Amer., vol. 51, 218, 222, 225, 1940. 

 Akurites eocenica Lesquereux, U. S. Geol. Surv. Terr., Ann. Rept. (1872), 397, 1873. 

 Grewiopsis ficifolia Ward, U. S. Geol. Surv. 6th Ann. Rept., 556, pl. 46, figs. 1, 2, 1885; U. S. Geol. Surv. Bull. 



37, 92, pl. 41, figs. 1, 2, 1887. 

 Greiviopsis eocenica (Lesquereux) Knowlton, U. S. Geol. Surv. Bull. 152, 114, 1898; Proc. Washington Acad. 



Sci., vol. 11, 207, 1909. 

 Ficus sp., Knowlton, Proc. Washington Acad. Sci., vol. 11, 207, 1909. 



In contrast with its abundance in the Medicine Bow formation, there are only 9 specimens 

 from four localities in the Lance Creek area which are referable to this species. Its occurrence 

 in the type Lance formation was previously reported by Knowlton,' whose specimen I have seen 

 at the U. S. National Museum.^ 



The modern relationships of this species are still in doubt. 



Occwrrence— Localities P3854, P3855, P3857, P3859. 



CoUedion — U. S. National Museum, No. 40256. 



• Knowlton, F. H., Proc. Washington Acad. Sci., vol. 11, 207, 1909. 

 » Specimen No. 40256. 



