BevACd RSs SXOxe Iie 
ENGONOCERAS. 
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iGsil—on eb ngonocenasistojectunn Maly alien ayaa eater eee orale eee ee alee eeite 168 
Fig. 1. Specimen from Duck Creek beds, near Denison, Tex.; Coll. U. 8. Geol. Surv. 
2. Suture of same, very slightly abraded, X 2. 
3. Specimen from Grayson, Tex.; Coll. D. S. Martin. 
4. Suture of same, X 2. 
5. Suture of specimen from Tarrant County, Tex.; Coll. Cragin, Colorado 
\ College. ; 
Washita (?) group, Comanche series. 
Eres G—1O eb ngonacenasiquOUOSUmupbliy aut eaten eel ete ata atal ater 171 
Fig. 6. 
296 
“I 
10. 
Lateral view of a small specimen from Goodland limestone, 15 miles west 
of Denison; Coll. U. 8. Geol. Surv. 
. Ventral view of same, partly restored. 
. Septum of same, 2. 
. Fragment doubtfully referred to the species, from Bell County, Tex.: Coll. 
U.S. Nat. Mus., No. 8301a, x 2. 
Septum of same, partly restored, x 2. 
Fredericksburg group, Comanche series. 
