PALROZOIC, . CONCHIFERA. CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN, 
: Hey ce alee 
= g, SSIS a Sielelglele 
z a SSeS lSlelS\aisia 
Alalels| || SISG@RRegis 
SPECIES. slalels| i lolSlsleiSSRleialela REFERENCES. 
Alelsl/slwmsl oils slslelxlelelsis 
SID Sale lSlelPlslalelelelsiela 
HISIS(SIEISIS(Z allele | Sl Blals | 2 
MISSA SPF E Eile & 
Arca (continued). 
— subtruncata ,.. Portl.........000 04) fana] too) faba] [ane BG) |das| oot [aro seslesefecslece[eee[eeefeaefeee] Pade Ctenodonta transversa. 
— transversa ...... SPOrL tenasetersees ees |ezcllena| eee | ea Boot (es) (eel lee sesleee|ecsloec[eee|eae[eae|eee| M2de Ctenodonta transversa. 
? AVICULIDE, 
SIPHONIDA (INTEGROPALLIALIA). 
Cardiola ............ 
— fibrosa... ood (on serfenefeeePons vee] [eco] x [oeefeeefeoetee-] Sil, Syst. t. 8, f. 4; ib. Siluria, 4 ed, t. 23, f.11. 
— interrupta ...... EBROU renduaciesece “oo| enn) fec6)|Boe) [bee faz fafa [elk fk] fee] a le]---| Sil, Syst. p. 617, t. 8, £.5. Cardium cornucopia, Goldf. 
vol. ii, p. 216, t.143, f.1; Siluria, 4 ed. t. 23, f.12. 
— semirugata...... SPOTL. 5. 0<ean 0-0 eetllesa|ees| eae are one] ok |eesf ose seslecelavs|eee[oosloee[eesleee] Mytilus, Geol. Rept. p. 430, t. 25 A, f. 7. 
— striata .....s...s0 OWS, ncwccitaesee's | ee Prerl [e e ves[e eefok |e] & fe | ok |e [eee [|---| Cardium, Sil. Syst. t. 6, £.2.  Ambonychia, M‘Coy, Brit. 
Pal. Foss. p. 264. Cardiola, Siluria, 4 ed. t. 23, f. 13. 
Car dium \cccverseeses Linn.1758...... 
— striatum ........ SOW! Aeace ssc eee Brlleeal eee! eee foe pvaldvates| eae tes[eeslonelocei|[sbie| eee nas|leeal| age Cardiolas 
NvcvLip®. 
Cleidophorus...... Hall, 1847 ...... 
Cucullella... M*‘Coy (part),1851 | 
h IDA (I LIALIA ). 
? Pleurophorus King, 1848...... SIEBONTD ( NTEGROPAL ) 
— amygdalus ...... ISO Ear wee seseaerens ‘ealfecdllocdlaad lees Pelli i eel so selerfersfeetersferenten] Q. J. Geol. Soc. vol. xx, p. 298, t.16, £.6 (derived Budleigh 
pebbles). 
| — ovalis .........404 M Coy ........- see[ere[ore|eeePone wee[K [eeePers rerfeesfeesleecteerloee]eeelee.! Brit, Pal. Foss. p. 273, t.1 K, f. 7, 8. 
— planulatus ...... Conrad vec fod (Bas! |a5c! (ood! jane Bog} (dod ose loa se] Jeeelecc[ercloocteotone! Muculites, fide Hall, Pal. New York, vol. i, t. 82, f. 9. 
Cleidophorus, M‘Coy, Brit. Pal. Foss. p. 273, t.1K, f. 9. 
NvucuLip®. 
Ctenodonta ...... Salter, 1851 ... 
Nuculana ,..... Link, 1807...... 
Nucul t 
woul (pare) Authors ......... 
Area (part)... 
TEMG” racer canoes: Schum. 1817 ... 
Polyodonta,..... Megerle 
Tellinomya (part) Hall 
Isoarea (part)... Minster, 1842 SIPHONIDA (INTEGROPALLIALIA). 
Pectunculus (part) Authors...... 
— ambigua ......... PROT Ue sastieeriectes Pt| [eae aol ond aoe ves[ ok |ooefeee[oee[eee]ece]aes[ece]are[eee| eee]? Pecdunculus, Geol. Rept. p. 430, t.34, f.11. ?P, Apjohnni, 
id. ib. p. 429, t. 34, £. 8. 
—anglica ......... DiOrOvmstarcent Baellacel fecal [oa jane Feo fee eed! [eee cele | ale fee] 2 Jeee/a..| Weenla, Prod. p. 33, Etager, No. 104. 1, ovatis, Sow. Sil. 
Syst. t.5, £.8, p. 609. Ctenod, anglica, Siluria, 4 ed. 
t. 23), £00; 
— Bertrandi ...... Rouault ......... Reeleealeacy (tec Rats Boel fils aoa (sea sesfecc[eccfecs[ecs[ece{eee[eee] MWeccula, Bull. Soc. Géol. France, 2 ser. vol. iv, p.322. Cteno- 
donta, Salt. Q. J. Geol. Soe. vol. xx, p. 301, t.15, f. 8. 
(Budleigh pebbles.) 
— Cambrensis...... Hicks ............ Pea! ee) esol l"2| (nal ect noe ieee ac uel sul gealeacllecelleca|lene(lers | (RQtednGeol.. Soc. vol. xxi, spe 475 wheres hey Op 
— deltoidea......... EPPA ccc ceeoeee seallser tts | nail eee sec[eoe]aee] x [eoe [eve] .-|eee{ece]ees]eee].02| LVeeula, Mem. Geol. Surv. vol. ii, pt.1, p. 366, t. 22, f. 5. 
— dissimilis ....., EB OTUUsamcirensesaes Bh0| loon local (ate) lens Goole oad loos teal ecelgeeleeelleeell eel eel eal etna Geoluikepts pad ase tasasncase 
— Eastnori ......... SOUS) teateancveacs vee[ece[eoe|easPassfers|ene|ecaflce [evclavs|eceeee]cee|ace|aceleee| Avea@, Sil. Syst. t. 20, £. 1a; ib. Port! Geol. Rept. p. 427; 
t. 34, f. 3. Ctenodonta, Siluria, t. 10, f. 9. 
— grandwya ...... (CHES peter nee Pap havelaseleara oomlibee wacileee] sae seslesslecefaeleee|esefeee]eee| LW eeula, Petref. Germ. vol.ii, p.150, t. 124, £. 3; ib. M‘Coy, 
Sil. Foss. Irel. p. 18. 
— imbricata ...... 12rd i occussneoe esl eels calecal eee ERA Paleo (eon sis[ece[ece[eceleae]ecefeee[eee] MWeeeuZa (var. of N. acuta), Geol. Rept. p. 430, t. 34, f. 10. 
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