328 :\IESOZOIC FLORAS OF UNITED STATES. 



Throo yoars later appeared his illustrated folio work" on the geology 

 and paleontology of the Cretaceous of Texas. All the fossils known to 

 him at that time are here described and figured. Very little attempt is 

 made to suhdivide the Cretaceous or to work out the stratigraphy, and 

 the fossils are regarded as indicating an Upper Cretaceous age, above 

 the (Jault and corresponding to the Senonian and Turonian of d'Orl)igny. 

 Specimens of fossil wood that he had sent to Dr. Franz linger, in Vienna, 

 were determined by the latter and briefly described without illustration 

 on pages 94-95. Three genera were represented, two of which were 

 dicotyledonous and came, as Roemer admits, from the Tertiary, Ijut the 

 Thuyoxylum americanum Ung. was collected between New Braunfels and 

 Austin in the Cretaceous. It may have come from the Trinity sands. 



The work of the Shumards, done between 1855 and 1860, but not 

 published till 1886,'' gives very little information relative to the Lower 

 Cretaceous, and, as Mr. Hill remark?, they "place the bottom of the 

 Texas strata on top, the top in the middle, and all the other subdivi- 

 sions equally out of place." " 



In one of B. F. Shumard's articles'' he gives (p. 583) a section of 

 the Cretaceous, which was made the subject of a critical review Ijy Mr. 

 Jules Marcou,' in which (p. 93) he introduces his own section, which 

 Mr. Hill characterizes as "an approximately correct ideal section. "■'^ 



Mr. S. B. Buckley devotes a few pages of his report " to the Creta- 

 ceous, but, as is usual with geologists, confines himself to the beds in which 

 abundant molluscan remains occur. The sand rock near Weatherford, 

 however, described on page 67, undoubtedly belongs to the Trinity, but 

 he does not mention fossil wood nor any oi'ganic remains. 



« Die Kreidebildungen von Texas iinil ilire organischen Eiiischliisse, von Dr. Ferdinand Roemer, Bonn, 

 18.52, 100 pages, 11 plates fol. 



'' .\ I'arl iiil Report on the (leology of Western Texas, consisting of a General Geological Report and a Journal 

 of Geologiial Observations, etc., by (leo. G. Sliuiiiard, Assistant State Geologist of Texas, An.stin. 1886. Also 

 several articles b\- G. G. and B. K. Slunnard. 



« Am. Journ. Sci., 3d ser., Vol. XXXIIl, January, 1887, p. 75. 



''Observations upon the Cretaceous strata of Texas: Trans. Acad. .Sci. .St. Louis, Vol. I, Xo. 4, 1,S()(), pp. 

 582-590. 



'Notes on the Cretaceous and Carboniferous rocks of Texas: Proc. Boston Soc. Nat. Hist., Vol. VI II, May, 

 1861, pp. 86-97. 



.''Am. Journ. Sci., 3d ser., Vol. XXXIII, .lanuary, 1887, p. 75. 



ff First Ann. Rep. Geol. and Agric. Surv. Te.xas, by S. B. Buckley, State geologist, Houston, 1874, pp. 

 6.5-69. 



