PALAOZOIC SYSTEM. 
GENERAL SECTION OF THE PALMOZOIC SYSTEM IN BRITAIN. 
ae 
SH 
ae 
es 
SE 
= 
Ad 
Pomfret Series. 
Big FER cee g 
CS) $ ae Bed 3 
5 EI a oS) SOS $s 
aS S| E| S- ofS I 
on =I =o Sae5 os 5 
= 6 5 i aos = 
es Bs 3 2a5 sara 3 
3 a el SS ito 3 
iS) A nm a A 4 

Pomfret Series. 
LOWER 
PALHOZOIC. 
MIDDLE 
PALZOZOIC. 
UPPER 
PALHOZOIC. \ 7. 
Coal and Mill- 
stone Grit. 

1. Lower CAMBRIAN. 
a. Longmynd Group (Sedgwick), certainly in great part lower than the 

1. Lower CAmpBrRIAN (Sedgwick). 
2. MrppLE CamBrRIAN  (do.). 
3. UppPEeR CAMBRIAN (do.). 
4, StmuRtAN (Murchison). 
5. DEvonIAN (Sedgwick and Murchison). 
(6. CARBONIFEROUS (Smith). 
POMFRET SERIES (Sedgwick. PERMIAN, Murchison). 
s alge ; 
Bigs oS Bale a 
aga Sui : 5 By 
na oO er.) i= So . i = 
59 Ss S'S = ° ; b 4 3 
2s Aa = S | Dy res 
seid) arg Rare 2° fae) iS) Ses ie 
ao Se Sea Bowie ehooseh 4s oss 
HE/SHE) oes = cel 9 8 @ Bg5 
ES som aS EN pinto a} 7) 
o ‘e2) A = aH & -@A oe = 
(Sedgwick, Phillips, Lyell, &c. CAmBRIAN of Geol. Survey). 
b. Harlech or Bangor Group (Sedgwick). 

Case and 
Column of 
Drawers. 
Reference to McCoy's 
Synopsis: and Figures of Genera. 

Gh.1 | 

Marine Plants. 

* The numbers refer to tickets on the specimens. 
Names and References; Observations, &c. 

CRYPTOGAMIA ALG (sea-weeds). 
Oldhamia antiqua, Forbes (Kinahan, Trans. 
Roy. Ivish Acad. Vol. xxur. p. 557, fig. 5). 
This fossil is believed by Dr. Busk and 
Rey. J. M. Berkeley to be a plant of the 
nullipore family—allied to Acetabularia, a 
Mediterranean type. Prof. Forbes thought 
it a Sertularian polype: but the cells are 
not uniform or even distinct. The radiating 
branchlets are connected by membrane. (See 
Mem. Geol. Surv. Vol. 11. p. 281.) 


Numbers and Localities. 

Only known yet in two 
| localities in Wicklow, viz. 
Carrickreilly | Mountains, 
and Bray Head. a. 632*, 
Bray Head (presented by 
the Irish Survey). Long- 
mynd Group. 
The localities and the donor’s name follow the numbers. 
