WILLIAMS AND 
KINDLE. 
MANSFIELD ORE-BED SECTION. 
119 
Faunule of zone 5 of Mansfield section (1459 B). 
[a, abundant; c, common; r, rare.] 
1. Orthothetes chemungensis (a). 
2. Productella lachrymosa (a). 
3. Schizophoria striatula (c). 
4. Camarotcechia contracta (a). 
5. Spirifer disjunctus (a). 
6. Delthyris mesicostalis (a). 
7. Athyris angelica (a). 
8. Leptodesma sp. (r). 
9. Crenipecten cf. amplus (r) 
Zone 9 of Mansfield section {H69 B). — The following species are 
found in zone 9, M feet above zone 5: 
Faunule of zone 9 of Mansfield section (1459 B). 
[a, abundant; c, common; r, rare.] 
1. Productella lachrymosa (a). 
2. Schizophoria striatula (r). 
3. Camarotoechia contracta (a) 
4. Delthyris mesicostalis (a). 
5. Athyris angelica (c). 
6. Aviculopecten rugsestriatus (r). 
Zone 11 of Mansfield section (14S9 B). — The greater part of the sec- 
tion between zones 9 and 11 is concealed. The following faunule is 
from a 1-foot bed 120 feet above the preceding faunule: 
Faunule of zone 11 of Mansfield section (1459 B). 
[a, abundant; c, common; r, rare.] 
Orbiculoidea sp. (r). 
Orthothetes chemungensis (c). 
Productella lachrymosa (a). 
Schizophoria striatula (a). 
Camarotcechia contracta (c). 
Cryptonella sp. (r). 
Delthyris mesicostalis (a). 
8. Amboccelia gregaria (r). 
9. Athyris angelica (a). 
10. Sphenotus cf. rigidus (r). 
11. Glossites cf. depressus (r). 
12. Macrodon chemungensis (r] 
13. Euomphalus sp. (r). 
14. Loxonema sp. (r). 
Zone 12 of Mansfield section {H5 9 B). — The 5 feet of shale 
sandstone following zone 11 contain the following species: 
Faunule of zone 12 of Mansfield section (1459 B). 
and 
[a, abundant; c, common; r, rare.] 
Orthothetes chemungensis (c). 
Chonetes setigerus (r). 
Productella arctirostrata (r). 
P. boydi (c). 
P. lachrymosa (c). 
Schizophoria striatula (a). 
Camarotcechia contracta (a). 
8. Spirifer disjunctus (r). 
9. Delthyris mesicostalis (a). 
10. Amboccelia gregaria (r). 
11. Athyris angelica (c). 
12. Grammysia sp. (r). 
13. Sphenotus contractus (r). 
14. Leptodesma lichas (r). 
The specimens referred to No. 7, have less angular plications and 
shallower sinus than specimens of Camarotmchia contracta from north- 
western Pennsylvania. The shells show — 
Plications in sinus, 3-4; generally 3. 
Plications on fold, 4; rarely 5. 
Plications on each valve, about 16. 
