96 
CONTRIBUTIONS TO DEVONIAN PALEONTOLOGY. [bull. 244. 
where in the concealed interval which separates the Gulf Brook and 
South Mountain sections, probably 300 feet or more above the ferru- 
ginous zone No. 81 of the former section. 
FAUNULES OF THE GULF BROOK SECTION. 
Zone 1 of Gulf Brook section (14-55 A). — The species found in the 
18 inches of olive-gray clay shale comprising the lowest zone of this 
section are as follows: 
Faunule of zone 1 of Gulf Brook section (1455 A). 
[a, abundant; c, common; r, rare.] 
1. Crinoid stems (r) . 
2. Chonetes lepidus (r). 
3. C. setigerus (c). 
4. Productella sp. (r). 
5. Camarotoechia cf. eximia (r). 
6. Ambocoelia gregaria (c). 
7. Edmondia subovata (r). 
8. Pholadella radiata (r). 
9. Nucula corbulif ormis (r). 
10. Palaeoneilo cf. bisulcata (r). 
11. P. cf. elongata (r). 
12. Leptodesma spinigerum (r). 
13. Cypricardella gregaria (a). 
14. Tentaculites bellulus (a). 
15. Conularia congregata (r). 
Of the 13 species which are specifically identified in this list, 8 have 
been recorded from the Ithaca fauna. Some of these, as 9 and 10, are 
recurrent Hamilton species. 
Zone 2 of Gulf Brook section (11^55 A), — The 6-inch zone following 
Al contains the following species: 
Faunule of zone 2 of Gulf Brook section (1455 A) 
[c, common; r, rare.] 
1. Chonetes lepidus (r). 
2. Camarotoechia stephani (r). 
3. Ambocoelia gregaria (a). 
4. Leptodesma spinigerum (r). 
5. L. sp. (r). 
6. Leiopteria sp. (r). 
7. Goniophora chemungensis (c). 
Zone 3 of Gulf Brook section (1^55 A). 
Zone ]± of Gulf Brook section (11^55 A). 
of this zone holds the following fauna: 
-This zone is concealed. 
-The 6 inches of sandstone 
Faunule of zone 4 of Gulf Brook section (1455 A). 
[a, abundant; c, common; r, rare.] 
1. Chonetes lepidus (r). 
2. C. setigerus (c). 
3. Ambocoelia gregaria (r). 
4. Nucula cf. bellistriata (r). 
5. N. corbulif ormis (c). 
6. Palseoneilo bisulcata var. (c). 
7. P. constricta (a). 
8. P. perplana (c). 
9. P. plana (a). 
10. P. cf. tenuistriata (r). 
11. Leptodesma spinigerum (c). 
12. Schizodus sp. (r). 
13. Goniophora chemungensis (r). 
14. Cypricardella gregaria (c). 
