PALASOZOIC. HOY DR OMiOvAr CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
Belle 4lElelelelslsle]./& 
= 2 SISISISISI@Zl(ZI/S/E/18 
Ble AlSlEIIB|ES IS (2 
SPECIES Alalels) lslSlelsleMPisialzeie es 
} SPECIES. s\Slale] iSlolSlelai¥ilelalaigials REFERENCES. 
oe IS lS] sl 1S ils le (silslalglalel= 
| 2] dol SIS IEIRSlelelelsisieia 
| B(8\a|o SlElEL (SIS) 8/2/82) e118 
| Sioa] 2 Sialopeais S| O | be lS | os 
MISIRISIS IAS |AIS IF IE IF I |< 6 Ie 
= a 
NEMAGRAPTIDE. 
Cenograplus ....., Hall, 1868...... | eval ee es foe Sc) [05 aad) (oon secfese[ecsfece{eosfeee[eee[ee] Vide Helicograptus. (Nich. 1868.) 
CoRYNOIDEA. 
| Corynoides......... Nicholson, 1867 
| Corynograptus . Hop.§ Lap.1875 | 
| — ealicularis ...... INA CTis ie sivascennas Beal ino ol fool fend) foe # [eccfeenPers sse[eeefecs|ece[eee{eee[oae[ee-| Geol. Mag. vol. iv, p-108, t.7, f. 9-11. 
| — gracilis ......... FEL OD Ke-Retere eee peal hal oem | esa eae Po Beal eed eee val ees|ac=|=="| reser weal eas Geolee Mag nvOle ix. )ps sO? it sl2 sub. Ue | 
MONOGRAPTIDE. 
Cyrtograptus...... Carruthers, 1867 | 
| — hamatus ......... BUY Fon canes ebaleee fase raalleas SAC eee eee vesfece[eesfore[eeefece]eee[eee| Q. J. Roy. Geol. Soc. Dub. 1861, t. 4, f.6; ib. Mem. Geol. 
Surv. Irel. Expl. Sheet 133, p.14, f. 7. 
| — Murchisoni ..... COR ee nace Serillacal loool load feo oc lo00\ ead |oog vecfece{ecc{eeefeeefeeefeee[ee| Siluria, 4 ed. p. 541, Foss. go, f.1; ib. Geol. Mag. vol. v, | 
} : | p-128, t. 5, £.17. 
CALLOGRAPTID&. | 
Dendrograptus ... Hall, 1862, 3... i 
— arbuscula ...... Salt. MS. ...... Pe | allaad bos wes[oee|ses]oee{e--[eee]---{--.| Hop. and Lapw. Q. J. Geol. Soc. vol. xxxi, p. 663, t. 36, f. 5. 
— diffusus Bb hort Gan seslecs[ece]eee[eee]eee[eee]---| Grapto. Quebec Group, p. 132, t.18, f.1-3; ib. Hopk. and | 
Lapw. Q. J. Geol. Soc. vol. xxxi, p. 664, t. 36, f. 7. | 
| — divergens......... GUS Tee cveneae sales) caer Ep aoe] (06 sasfesfeee|eee[eeefoee{-ee]...| Grapto. Quebec Group, p.129, t.17, f. 3-4; ib. Hopk. and | 
Lapw. Q. J. Geol. Soc. vol. xxxi, p. 664, t. 36, f. 6. | 
| — flexuosus ......... HOS Meets pati epel baal lord al e°34 |ne) (soe seclecs[ece]oce[eee[eee]oee[ee| Grapto. Quebec Group, p.127, t.17, f.1, 2; ib. Hopk. and | 
| Lapw. Q. J. Geol. Soc. vol. xxxi, p. 662, t. 36, f. 3. | 
| — furcatulus ...... SQlis Fancceceases 5 od be Rep aa Bor aee sealaee{eeefeee{eceeee{--e{---| Mems. Geol. Surv. vol. iii, p. 331, t.11 A, f. 5. D. Hal- 
lianus, Prout, Am. Jour. Science, vol. ix; ib. Nichol. Q. J. 
Geol. Soc. vol. xxiv, p. 142, t. 5, f. 6, 7. 
— Hallianus ...... PP Ok vaseco ter s|ee|\eee|sesl=25 laesbess veclese{eee[eee[eeefoee{ese[..-] Am. Jour. Science, vol. ix; id. Nich. Skiddaw, Grapto. Q. J. | 
Geol. Soc. vol. xxiv, p. 142, t. 5, f.6, 7. ? D. furcatula, 
Salter. 
—‘lentus ...........: COPPS a cxsescceves\ oss) iee)sseloe< [oes “Heal lood| [aos wec[ece[ooe]eee[eee{ee-]...[...| Murch. Siluria, 4 ed. p. 541, Foss. 90, p. 541, f. 5. 
— linearis ......... COPPT coctanoness seal face lapel Ines ae eee) Weal incg ee wes[eee[ece[oee[ecefeee|eoe[---] ede Pleurograptus. 
— persculptus...... WH Op av ccanseeen Pesca (io caelWealecr|evaleca|e-lews|e<s|| Qs Je Geol Soc. vol.xxxi,, p- 603% 6.36; L- 4- | 
| — Ramsayi......... SH OD lowe wae eeee ae wileata| act ias Qos 1 Gsallocd loo eles ea eels [Bee lees lees Qa dien Geola Socsnvol-pxxcxas) ps|0045)t.13 Osean 2 = 
| — ramulus ......... TOD waa onan: ee) oud lage lead ace Bei [ince tose | ees pelle |eadle-a|eecleselers| seep GeoleMacs vol. ix, pnisO3sntan2, £42. 
— serpens ......... EL Op laewecetee eee eg | nerd lee] loca cee[ecefece[ecsfecefee{eee|ee| Hopk. and Lapw. Q. J. Geol. Soc. vol. xxxi, p. 665, t. 37, f. 3. 
ae STU, Gasrgdsto spe doosonscneesecnnddoeel teal ical aacliace) lesa Bal bed (aes ve.[ecs[oe.] x feee{ees[..[...| ade Ptilograptus anglicus. 
| DICRANOGRAPTID ®. | 
| Dicellograptus ... Hopkinson,1870 
Didymograptus. Part. (auct.) ... } 
|) SC sooesseocace ONE CI a erroces se Altrec! Se He faoal ae vecface|ece{eee[aee|eee{eee{eee| Dédymo. Geol. Mag. vol.iv, p. 110, t. 8, f.18-20. Dicellog. 
Hopk. Geol. Mag. vol. viii, p. 26, t.1, f. 5. 
— elegans ......... (OTe eoeppccoecn ba9| uss] jaca lood lane Pullenal Ised ace culeecleec{ece{eseleeeleee{ee.| Didymo. Geol. Mag. vol.v, p.129, t. 5, £.8a. D. flaccidus, | 
| Hall ; Nich. Geol. Mag. vol. iv, p. 110, t. 7, f. 1-3. Dicel- 
log. Hopk. Geol. Mag. vol. viii, p. 24, t.1, f. 3- 
— Forchhammeri.. Gein. ............ naa lWeealece [ee veJeee|ece{eeeeee|eee{eee[--.| Cladograp. Die Grapto. p. 31, t. 5, f. 28-31. Didymo. 
Baily, Expl. sheet 133, Geol. Surv. Irel. p.14, f.6; id. 
Jour. Geol. Soc. Dublin, vol. ix, p. 305, t. 4, f. 7. Dicel- 
lograp. Hopk. Geol. Mag. vol. viii, p. 23, t.1, f.1. 
— Moffatensis...... Corns = Mince. aa lasel eal one Baletall ces ee wsalec{eastess[eesJose|ec-[...| Dadymo. Proc. Roy. Phys: Soc: Edinb. vol. i, p- 469, f. 3- 
{ Grap. divaricatus, Hall, Pal. New York, vol. iii, Sup. 
p 513, f. 1-4. Didym. divaricatus, Nich. Ann. Mag. Nat. 
Hist. 4 ser. vol. v, p. 351, t. 7, £. 4. Dicellog. Hopk. Geol. 
Mag. vol. viii, p. 25, t-1, f.4; ib. Hopk.and Lapw. Grapto. 
Arenig and Lland. Rocks, St. David’s, Q. J. Geol. Soe. vol. 
Xxx1, p..654, t. 34, f. 3, 35, f. 5- 
5 
