ARENIG 
AND LLANDEILO. 
LOWER SILURIA N—cont. 
ARENIG AND LLANDEILO. 
iz 
2 : g Author | 4 
2 Bls Name. of Formation. | Locaiity. 
= eal Species. 
Ble | a | | 
Iv. PLANTA. 
Shelf. 
1| 1 | Fucoid (2 - - -|- - | Areni - | Hodgson’s Howe, 
= ee? | e | Skidda 
iddaw. 
SPONGIDA. 
2} 1 |Ischaditesantiquus - -| Salt. | Arenig -j Garn, Arenig. 
HYDROZOA. 
3 | 1 | Dichograptus octobrachia-| Hall | Arenig  - | Skiddaw. 
tus (3). | 
3a 1 ” ” ” ” al ” 
4 1 ” ” ” ” 2 ” 
5 1 ” sp- = | hee = | ” fF; ” 
6 1 ’ = Al = ’ = 5 
7/1 i Gee A Wah oe ao eBarl Keswitie 
8 | 1 | Didymograptus geminus -| His. es - con Gwynlle, 
elve. 
9 > hirundo -| Salt. - - | Ellengill. 
10} 1 35 latus -| M‘Coy a - Sate Brow, 
<iddaw. 
ed e Murchi- Beck. £ - | Eggbeck, Ulls- 
soni (3). water. 
125 Be if ( - 55 .s -| Pont Seiont, Car- 
| narvonshire. 
13 | 1 | Tetragraptus bryonoides(3) Hall | y - Hrogmen Hill, Skid- 
aw. 
14) 3 | Climacograptus bicornis  - % AS - HYOPYy, near Port- 
madoc. 
15 4 ” ” = ” ” a Ta slew 
oc. 
16 | 3 | Diplograptus barbatulus -| Salt. % - Poe near Port- 
madoc. 
17 1 3 folium -| His. FA - | Skiddaw. 
18 1 - mucronatus-| Hall 3 - Ey ObrY, near Port- 
madoc. 
19} 1 3 pristis - S| dhe 3 - Becbwane Brow, 
iddaw. 
20 1 ” ” = e ” ” s: ” ” 
2 ax2 a ra he - cc 3 - oo Works, Tre- 
madoc. 
22 1 = = ” ” - | Tai-hirion., 
23°} 3 Dendrograptus 7 ee - oo - | Ty-obry. 
By || 3 Graptolithus Nilssoni (3) - -| Barr 5 - ie eee Brow, 
<iddaw. 
25 1 ” ” =} ” ” - ” ” 
26 eal + sagittarius -| Linn 3 = os - 
27 | 2 | Rastrites peregrinus - -| Barr. power B Garpool, Moffat. 
andeilo 
28 | 1 | Dictyonema sociale? (20) Salt. | Arenig -| Whitsand Bay. 
29| 1 = - ” -|- = “ - | Ty-obry. 
41639 a. B 
