WILLIAMS AND 
KINDLE. 
FAUNULES OF CATAWISSA SECTION. 
71 
Zone 4- of Catawissa section (/.£•>> A). — Careful search has failed to 
discover any fossils in the black shales of this zone. The physical 
appearance of the beds is identical with that of the Genesee shale, and 
no doubt a Genesee fauna will eventually be found in this region at 
this horizon. 
Zone 5 of Catawissa section (1/+53 A). — The dark-bluish shaly beds, 
which form a transition from the fissile shales of zone 4 to the hard 
sandy beds of zone 6, appear, like the former zone, to be barren. 
Zone 6 of Catawissa section (11^53 A). — Near the base of 175 feet of 
hard, olive-brown, sandy beds the following faunule appears: 
Faunule of zone 6 of Catawissa section (1453 A). 
[c, common; r, rare.] 
1. Plant remains (r). 
2. Lingula sp. (r). 
3. Chonetes lepidus (c). 
4. Elymella fabialis (r). 
5. Buchiola speciosa (r). 
6. Nuculites cf. triqueter (r). 
7. N. sp. (c). 
8. Pterochreuia fragile (c) . 
9. Lunulicardium eurtum (r). 
In this assemblage of species we have the first appearance of the 
Buchiola speciosa (Nunda) fauna in the section, suggesting the early 
stage of sedimentation of the Nunda (Portage) formation." 
Zone 7 of Catawissa section (H53 A). — This zone is the equivalent of 
No. 71 of White's section, and contains the following species: 
Faunule of zone 7 of Catawissa section ( 1453 A ) . 
[a, abundant; c, common; r, rare.] 
7. Nuculites cf. triqueter (c). 
8. Actinopteria sp. (c). 
9. Leda diversa (c). 
10. Pleurotomaria sp. nov. (c). 
11. Macrochilina cf. hamiltoniae (r] 
1. Aulopora sp. (a). 
2. Schizophoria striatula (r). 
3. Cyrtina hamiltonensis (r). 
4. Spirifer pennatus va/. posterus (a). 
5. Nucula bellistriata (r). 
6. N. sp. (c). 
The earliest appearance for this section of Spirifer pennatus var. 
posterus is in this faunule. 
Zone 8 of Catawissa section {1^53 A). — Fossils are scarce and difficult 
to collect at this horizon. The collection shows the following: 
Faunule of zone 8 of Catawissa section (1453 A). 
[c, common; r, rare.] 
1. Crinoid stems (r). 
2. Leiorhynchus mesicostale (c). 
3. Nuculites sp. (r). 
4. Palseoneilo emarginata (r' 
5. P. sp. (r). 
6. Leda sp. (r). 
One or two individuals of Leiorhynchus mesicostale have the plica- 
tions limited to four on the fold, and resemble Z. globuliforme. 
a See footnote, p. I 
