PLATE XV-A 
Fig. 1. Dalmanites sp. Cranidium with adjacent parts of free cheeks; middle 
part of anterior outline uncertain. Strongly convex cranidium apparently re- 
lated to Dalmanites vigilans Hall. Cedarville, Ohio; in Cedarville dolomite. 
Fig. 2. Dalmanites sp. Pygidium associated in same layers with the latter; 
tip of posterior outline uncertain. Cedarville, Ohio; in Cedarville dolomite. 
Fig. 3. Dalmanites cf. Illinoisensis Weller. Pygidium. Moodie quarry, at 
Wilmington, Ohio; in the Cedarville dolomite. Collection of Dr. George M. 
Austin. 
Fig. 4. Cheirurus welleri Raymond. Hypostoma. Moodie quarry at Wilming- 
ton, Ohio; in Cedarville dolomite. Collection of Dr. Charles Welch. 
Fig. 5. Cheirurus welleri Raymond. Cranidium with posterior part restored. 
Moodie quarry at Wilmington, Ohio; in Cedarville dolomite. Collection of 
Dr. Charles Welch. 
Fig. 6. Cypricardinia jepthaensis Foerste. Right valve. Loose chert, of 
Laurel age, on Jeptha Knob, Kentucky. 
Fig. 7. Trochonema sp. Loose chert of Laurel age, on Jeptha Knob, Kentucky. 
Fig. 8. Eccyliomphalus circinatus (Whiteaves). Apical end of shell with septa. 
Five-eighths of a mile northeast of Steam Furnace, south of Peebles, Ohio; in 
strata equivalent to the Guelph formation. 
Fig. 9. Lophospira bucheri Foerste. Loose chert of Laurel age, on Jeptha 
Knob, Kentucky. 
Fig. 10. Camarotoechia indianensis (Hall). A, brachial valve; B, pedicel 
valve. Loose chert of Laurel age, on Jeptha Knob, Kentucky. 
Fig, 11. Platystrophia daytonensis (Foerste). Pedicel valve. Loose chert of 
Laurel age, on Jeptha Knob, Kentucky. 
Fig. 12. Schuchertella sp. Loose chert of Laurel age, on Jeptha Knob, 
Kentucky. 
Fig. 13. Illaenus cf. daytonensis Hall and Whitfield. Loose chert of Laurel age, 
on Jeptha Knob, Kentucky. 
Fig. 14. Orthis bucheri Foerste. Brachial valve. From residual Brassfield 
limestone at south spur of South Hill, on Jeptha Knob, Kentucky. Named in 
honor of Dr. Walter H. Bucher. 
Fig. 15. Buthotrephis creditensis Foerste. A, Type specimen, with fragment 
of frond. B, lobate portion of another frond. Credit Forks, Ontario; in basal 
part of Manitoulin dolomite. 
