PALAOZOIC. GASTEROPODA. CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
al |e s 4 Pan Slelefels bp 
‘S| | op AlS|S| Els slelelele 
Al alel. JSS RiB|Sisihls le 
SPECIES. ne & = 8) |S\o\s E Blas | |S PB lal REFERENCES, 
aye lels (esis lalsislelsslalal= 
RISIRISISIASAIDIEIFIE Alas ia ia 
Province, ODONTOPHORA. 
Class, GASTEROPODA. 
TURBINIDE. 
Cyclonema ......... Hall, 1852 HOLOSTOMATA. 
— angulatum ,...., Sollas ..... Ange local G05) eee! [ace| boc| soo] soellgac| [bor oenl lace * Sil. District of Rhymney, Q. J. Geol. Soe. vol. xxiv, p. 498, 
t. 24, f. 15. 
— simplex... SOLLGE Vreasevealless|seeilves|ace| use| ee * Sil. District of Rhymney, Q. J. Geol. Soc. vol. xxiv, p. 498, 
t. 24, £. 10. 
— turbinatum.,,.... Sollas ...... 566) [550| 680) soel eo! laoc|taco| fac load looe x Sil. District of Rhymney, Q. J. Geol. Soc. vol. xxiv, p. 499, 
t. 24, f. 1. 
TURRITELLIDE. * 
Holopella ......... M ‘Coy Seclfasina HOLOSTOMATA, 
— gracilis ......,.. Sollas............ eseleealicnal Ge<|leca| oxalate s Alealts Q. J. Geol. Soe. vol. xxiv, p. 498, t. 24, f. 5. 
— hydropica ....,. Sollas............ Saial soell coal ese ser oaalleesi mee [ etal wd * Q. J. Geol. Soe. vol. xxiv, p. 498, t. 24, f. 4. 
= MIN UWbAsseseaeasece SOLAS econ enese as EN De | (el (eal ae * Q. J. Geol. Soc. vol. xxiv, p. 498, t. 24, f. 6. 
HALiorip®. 
Murchisonia ....., D’ Archiac et De 
Verneuil, 1841 HOLOSTOMATA. 
— corpulenta ...... Sollas............ 80] ce! feed focal [sel bod) oa lapel eee x Q. J. Geol. Soc. vol. xxxv, p. 499, t. 24, f. 11. 
— elegans............ Sollas.... * Q. J. Geol. Soe. vol. xxxv, p. 499, t. 24, f. 8. 
PLA COP HOR Ay 
|. alltel ee| ell alo esll és 
S| |g a/2lsl2lSielelelels 
a| |e AlSlElSS/sle\slsia 
; Algiels slSISIS lc IZ IFAIE| LISI 
SPECIES. 3/2) el Se] |S) s/21 3) Stes ls i3| 23 la] | REFERENCES. 
Ql lSlelelS Sits S18 (8le)elals| = 
elelMSlelelslelTislelelelslsie 
S/S) E(212 18/2 (sl ah2.2 12S |B) als | 3 
FIFIRSIS Alp IE EIEIis ia le 
Sub-Class, PLACOPHORA. 
Order, Chitonide. 
Helminthochiton Salter, 1846... 
— Grayi@ H. Woodward |...)...)..)...]...J... x Geol. Mag. Dec. III, vol. ii, p. 352, t. 9, £. 7-12. 
— Griffithii ......... Salter wisess)... * Sil. Foss. Ireland, Addenda, p. 71, t. 5, f. 5 a-c. 
418 
