100 
CONTRIBUTIONS TO DEVONIAN PALEONTOLOGY. Lbull.244. 
Zone 36 of Gulf Brook section {H55 A). — The following species 
characterize this zone, which is composed of 2 feet of impure limestone 
composed of shell fragments: 
Faunule of zone 36 of Gulf Brook section ( 1455 A ) . 
[a, abundant; o, common; r, rare.] 
per- 
1. Stropheodonta (Leptostrophia 
plana var. nervosa (a). 
2. Orthothetes chemungensis (r). 
3. Productella speciosa (c). 
4. Schizophoria striatula (r). 
5. Spirifer mesistrialis (r). 
6. Delthyris mesicostalis (c). 
7. Orthonota parvula (r). 
8. Spathella typica (r). 
9. Edmondia cf. subovata (r). 
10. Palseoneilo contracta (r). 
11. Cypricardella gregaria (r). 
12. Tentaculites cf. bellulus (r). 
Zone 37 of Gulf Brook section (H55 A). — Fifty feet of barren sand- 
stone beds succeed the last zone. 
Zone 38 of Gulf Brook section {HS5 A). — This zone contains the 
following faunule: 
Faunule of zone 38 of Gulf Brook section (1455 A). 
[a, abundant; r, rare.] 
1. Orbiculoidea lodiensis var. media (r' 
2. Camarotcechia stephani (a). 
3. Sphenotus sp. (r). 
4. Spathella sp. (r). 
5. Nueula cf. varicosa (r) . 
6. Nueula sp. (r). 
7. Paheoneilo sp. (r). 
8. Leptodesma sp. (r). 
9. Modiella pygmaea (r). 
10. Modiomorpha subalata (r) . 
Zone 39 of Gulf Brook section {lli55 A). — This zone holds the fol- 
lowing meager faunule: 
Faunule of zone 39 of Gulf Brook section (1455 A). 
[a, abundant; c, common,] 
1. Stropheodonta (Douvillina) mucro- 
nata (a). 
2. S. (Leptostrophia) perplana var. ner- 
vosa (a). 
3. Orthothetes chemungensis (c). 
4. Spirifer mesistrialis (a). 
Zones 4-0 to J$ of Gulf Brook section (H55 A). — These zones com- 
prise 180 feet of nearly barren beds. 
Zone If3 of Gulf Brook section (11^55 A). — The following faunule 
occurs in 5 feet of sandy shale: 
Faunule of zone 43 of Gulf Brook section (1455 A) . 
1. Crinoid joints (c). 
2. Stropheodonta (Douvillina) mucro 
nata (a). 
3. Orthothetes chemungensis (c). 
[a, abundant; c, common; r, rare.] 
4. Camarotcechia cf. eximia (r) 
5. Delthyris mesicostalis (r). 
6. Cypricardella gregaria (r). 
