rnoM THE ceetaceous rocks. 227 



Williamsonia virginiensis, Fontaine, 1889, p. 273, pi. cxxxiii, 

 figs. 5-7; pi. olxv.fig. 5. Potomac Formation ; Virginia, U.S.A. 



Wincliellia triphylla, Lesquereux, 1893, p. 209, pi. yiii, fig. 1. 



Upper Cretaceous ; Montana, U.S.A. 

 WoodTwardia crenata, Knowlton, 1900 a, p. 22, pi. iii, fig. 3. 



Montana Formation ; Wyoming, U.S.A. 

 sp., Knowlton, 190O a, p. 23, pi. iii, fig. 9. Ibid. 



Xylolithes, Debey, 1848. (Cancelled by Debey, 1850, p. 117.) 

 Xylomites aggregatus, Heer, 1882, p. 21, pi. xxix, figs. 11, 11 h. 



Atane Beda ; Greenland. 



ellipticus, Ettingshausen {non Feistmantel), 1867 a, p. 243, pi. i, 



fig. 7. Oenoraanian ; Niedersohoena, Saxony. 



Yatesia Guillatunoti, Fliobe, 189(5, p. 143, pi. i, fig. 4. 



Albiau ; Clermont, France. 



Morrisii, Oarruthers, 1870, p. 688, pi. Iv, figs. 3-6, (^= Cycadeoidea 



Yatesii (Morris), Oarruthers, 1867.) Lower Greensand ; Potton. 

 Yezonia vulgaris, Stopes & Fnjii, 1910, pp. 23-32, pi. ii, figs. 5-8 ; 

 pi. iii, fig. 9; pi. iv, fig. 19; text-figs. 8-11. 



Upper Cretaceous ; Hokkaido, Japan, 

 Yezostrobus Oliveri, Stopes & Fnjii, 1910, pp. 33-41, pi. i, figs. 8-9; 

 pi. iii, figs. 10-13 ; text-figs. 12-14. Ibid. 



Yuccites fractifolius, Saporta, 1894, p. 110, pi. xix, fig. 20 a. 



Lower Cretaceous (?) ; Portugal. 

 ? sp., Miquel, 1853, p. 53, pi. i, fig. 3. Cretaceous ; Belgium, 



Zamia macrocephala, Lindley & Hutton, 18.35, p. 117, pi. cxxt. 



(= Zamiostrobus macrocephalus, Endlicher, 1841.) 



Greensand ; Kent. 



ovata, Lindley & Hutton, 1837, p. 189, pi. coxxtIa. {=Zamio- 



slrohus ouatus, Sebimper, 1870.) Ibid. 



sussexiensis, Mantell, 1843, p. 34 ; & 1846, p. 51, pi. ii, fig. 1. 



(= Pinites sussexiensis, Carrutbers, 1866 b.) 



Lower Greensand ; SuBsex. 



Washingtoniana, Ward, 1895 a, p. 350, pi. ii, fig. 6. 



Potomac Formation ; Virginia, U.S.A. 

 Zamiophyllum Buchianum (Ettingsliausen), Nathorst, 1890, p. 46, 

 pi. ii, figs. 1-2 ; pi. iii ; pi. iv, fig. 2 ; & Yokoyama, 1894, p. 223, 

 pi. XX, fig. 1; pi- xxii, figs. 1, 2; pi. xxiii, fig. 6; pi. xxvii, 

 figs. 5 a, 6; pi. xxviii, figs. 1, 2. (— Pierophyllmn Buchianum, 

 Ettingsbausen, 1852 c, & Dioonites Buchiamis, Bornemann, 1856.) 



Neocomian ; Japan, 



. Naumanni, Nathorst, 1890, p. 47, pl.T, fig. 1 ; & Yoioyama, 1891, 



p 225 ul. xxi, fig. 3 ; pi. xxtS. Ibid. 



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