WILLIAMS 
KINDLE 
f ND ] CONTRIBUTIONS TO DEVONIAN PALEONTOLOGY. 51 
THE BUCHIOLA SPECIOSA FAUNA. 
By H. S. Williams. 
Another argument for the belief that in the regions here discussed 
the black shales range from as low as the Onondaga to and beyond the 
base of the Carboniferous, is found in the distribution among them of 
forms which in New York State are listed as Nunda (Portage) species. 
Take, for instance, the faunules containing Buchiola speciosa. They 
appear in black, shaly sediments and in the coarser shales following 
them in the middle Appalachian region. But a glance at the faunule 
lists shows that they belong to a general fauna which in New York is 
sometimes seen in one or other of the Marcellus, Genesee, and Nunda a 
formations, and only in insignificant proportions in any of the other 
formations, occupying the part of the column between the Marcellus 
to the Chemung. 
For some of the species the range is lower or higher than these 
limits. From both the association in the faunules, and the absence of 
common genera of other formations of this part of the Devonian, it is 
fair to infer that Buchiola speciosa, Pterochacnia fragile, Paracardium, 
doris, Parodiceras discoidewn, Styliola fissurella, Tentaculites gracilis- 
triatus, and some other associated species, constitute a fauna whiqh 
persisted for a considerable portion of middle Devonian time, repre- 
sented in the New York sections by the formations from Marcellus 
to Nunda, inclusive. 
The following table exhibits the association of the species of the 
Buchiola speciosa fauna in the Virginia faunules and their reported 
range in the formations of New York: 
The Buchiola speciosa fauna represented in the Virginia sections and its reported range in 
the New York formations. 
[a, abundant; c, common; r, rare; C, Chemung; G, Genesee; H, Hamilton; I, Ithaca; M, Marcellus; 
O, Onondaga; N, Nunda; W, Waverly.] 
Section. 
Range in New 
York forma- 
1380. 
1382. 
1383. 
Bl. 
Dl. 
El. 
B4. 
CI. 
Dl. 
A4. 
A6. 
AT. 
A8. 
A9. 
1. Orthothetes chemungensis var. 
arctostriatus 
c 
a 
r 
H. 
2. Chonetes cf. setigerus 
r 
M, W. 
r 
H, N, I. 
r 
M, H. 
5. L. limitare 
a 
a 
M. 
r 
M, C 
7. Nucleospira ef . concinna 
c 
c 
r 
0, H. 
8. Anoplotheca acutiplicata 
c 
0. 
9. Clinopistha cf . antiqua 
0. 
10. Paracardium doris 
r 
a 
c 
c 
N. 
11. Buchiola speciosa 
h. a. n. 
a See footnote on p. 86. 
