166 University of Texas Bulletin 



PLATE 4. 



Schloenbachia Engonocreas, Flickia, Corbula Plate 4 

 figure 1. Schloenbachla sp 



Rare, Pawpaw clay, x 4.0. Locality: 714, near Fort Worth, Texas. (See PI. 1, 

 fig. 6.) 



i 



Figure 2. Engonocerai sp Page 85 



Rare, Pawpaw clay, x 2.5. Locality: 714, near Fort Worth, Texas. 



Figure 4. Acanthocera* wortheiue n. sp Page 93 



Abundant, Pawpaw clay, x 4.0. Locality: 714, near Fort Worth, Texas. 



Figures 3, 5-6, 12. Engonoceras serpentinum (Cragin) Page 84 



Occasional, Weno shale, Grayson and Cooke counties, Texas and southern Okla- 

 homa; rare, Pawpaw clay and shale. Figs. 3, 5, x 2.5; locality: 714, near 

 Fort. Worth, Texas. Figs. 6, 12, x 1.0; locality: 604, near Denison, Texas. 



Figures 8-10. Engonoceras sp Page 85 



Very abundant, Pawpaw clay, especially near the base; rare, Grayson, Denton, 

 and Duck Creek formations, clay and marl facies, x 3.0, locality: 714, near 

 Fort Worth, Texas. 



Figure 11. Flickia (?) bosquensi* n. sp Page 87 



Rare, top of Exogyra arietina horizon, middle Del Rio clay (equivalent of base 

 of Grayson formation). Type individual, x 4.0. Locality: cliff on west bank 

 of South Bosque River, 100 yards south of the bridge of the Speegleville road, 

 and 5.5 miles west of the courthouse at Waco, Texas. (See pi. 1, fig. 4.) 



