114 
CONTRIBUTIONS TO DEVONIAN PALEONTOLOGY 
[BULL. 24J 
Zone 3Jf of Tioga section (llfiO A). 
nized in this zone. 
Only three species were recog* 
Faunule of zone 34 of Tioga section (1460 A). 
1. Orthothetes chemungensis (common). 
2. Spirifer disjunctus (common). 
3. Orthoceras sp. (rare). 
Zone 35 of Tioga section (14-60 A). — Two feet of very ferruginous 
red sandstone hold the following faunule: 
Faunule of zone 35 of Tioga section {1460 A). 
[a, abundant; c, common; r, rare.] 
6. Athyriscf. angelica (r). 
7. Mytilarca chemungensis (r). 
8. Aviculopecten duplicatus (r). 
9. A. striatus (r). 
1. Orthothetes chemungensis (r). 
2. Camarotcechia sp. (r. ) 
3. Spirifer disjunctus (a). 
4. Delthyris mesicostalis (r). 
5. Amboccelia gregaria (c). 
Zone 39 of Tioga section (llfiO A). — Seventy feet above the preced- 
ing faunule the following association of species occurs: 
Faunule of zone 39 of Tioga section {1460 A ) . 
[a, abundant; c, common; r, rare.] 
5. Amboccelia gregaria (c). 
6. A thy ris angelica (r). 
7. Aviculopecten cf. cancellatus (r). 
1. Productella lachrymosa (a). 
2. Schizophoria striatula (c). 
3. Camarotcechia stephani (c). 
4. Delthyris mesicostalis (c). 
Zone 1$ of Tioga section (llfiO A). — This zone, nearly 600 feet abov( 
the base of the section, contains nearly the same association of specie 
as the preceding faunule, 39, 60 feet below it. The species are ai 
follows: 
Faunule of zone 4% of Tioga section (1460 A). 
[c, common; r, rare.] 
1. Orthothetes chemungensis (c] 
2. Productella lachrymosa (r). 
3. Schizophoria striatula (c). 
4. Camarotcechia stephani (r). 
5. Delthyris mesicostalis (c). 
6. Amboccelia gregaria (c). 
7. Athyris angelica (c). 
8. Sphenotus sp. (r) . 
Zone 44- °f Tioga section (1^60 A). — Fifteen feet above zone 39 occur 
the highest faunule secured from the section. It contains the follow 
ing species: 
Faunule of zone 44 of Tioga section (1460 A). 
[a, abundant; c, common; r, rare.] 
1. Stropheodonta sp. (r). 
2. Productella lachrymosa (a). 
3. Schizophoria striatula (a). 
4. Camarotcechia stephani (c). 
5. Leiorhynchus mesicostale (r). 
6. A try pa reticularis (r). 
7. Spirifer disjunctus (c). 
8. Delthyris mesicostalis (c). 
9. Amboccelia gregaria (c). 
10. Athyris angelica (c). 
11. Sphenotus contractus (r). 
12. Glossites procerus (r). 
13. Mytilarca chemungensis (c). 
14. Actinopteria sp. (r). 
