Catalogo paleontologico del bacino terziario del Piemonte 
209 
Numero d’ordine 
FORME 
i 
O 
G 
ri 
£ 
o 
§ 
£ 
ri 
Astiano 
Piacenziano 
Messiniano 
Tortoniano 
Elveziano 
Langliiano 
Aquitaniano 
o 
J 
’p< 
g 
in 
Tongriano 
Sestiano 
Bartoniano 
Parisiano 
2537 
Nassa 
mutabilis var. plioumbilicata Sacc. 
(A Bell ) . 
2538 
11 
» var. pliomagna Sacc. (B. 
Bell.) 
2539 
1 
11 
« var. pliosulcatissima Sac. 
(C. Bel'.) 
2510 
11 
» var. plioacuta Sacc. (D. 
Bell ) 
2541 
ann fienai s TapII 
| 
2542 
11 
» var. ventricosa Sacc. (A. 
Bell ) 
2543 
2544 
11 
» var. acuminata Sacc. (A. 
Bell.) 
2545 
pulr.hrn. TVAnr 
? 
— H 
| 
2540 
| 
| 
2547 
rio fossa T$p11 
r 
1 
'2548 
— H 
! 
'2549 
mngnir.nli.osn. Bell 
| 
2550 
2551 
rjibhnsif] a. Limi 
! 
11 
» var. pliopergibbosa Sacc. 
(\ Bell ) 
2552 
11 
» var. pliocallosa Sacc. (B. 
Bell ) 
2553 
n 
» var. plioacuminata Sacc. 
!C Bell 1 
2554 
2555 
2556 
2557 
2558 
ringi.r.ii.l.n Bell 
I 
| | 
Soldanii Bell 
? 
1 
suhrsulr.nt.n. Bell ... 
| 
i 
| 
Rnu'p.rhnn.ki. Miclit, 
! 
1 
il 
M var. pluricostulata Sacc. 
(A. Bell.) 
. ~ H 
