PALAXOZOIC. OR EEA OL OoDrAS CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
= SS, 
| |& BIS lelslalsielelg 
Alalele! |-lslSlece@risresie 
SPECIES. slelels) (SiclslelSie ls (al Plalale REFERENCES. 
eels [3 Sala lS (S818 l5/slele| = 
SIS|SIS(E1S (8/2 als |S 15/2 EES (3 
MISISIeIS iS iS AIS IE IE IE A lip a |e 
Orthoceras (continued). 
— Lndense ......... MODS estacsesecs cod leod| food lsd coe caolleselloadl food seeleos| e | ae ee] x [eee[eee] Sil Syst. p. 619, t.9, f.1; ib. Siluria, 4ed. p. 232, Foss. 62, 
Eoj2str 28.) tels2 5 
— Maclareni ...... ISH. endostongtae : d\lood foci ses] fece[eesfeee| ae [oee{ee-| Siluria, 2 ed. p.176, £. 24; ib. Mem. Geol. Surv. Expl. 
sheet 32, Geol, Edinb. p. 143. 
— Marloense ...... EPRAlle i vawexcares é6al fond and Isod Pec bcd Ided jae (S00 seo ae [eee[eee[eee]eee]eee |---| Mem. Geol. Surv. vol. ii, pt.1, p. 353. 
— mendax ......... ISM “penbaseccrns seal fecal los lead fox 3 bed lec a0 Gosleveleoslereleselecetees|(eo=|| Qi dis Geol Socs voluxv, (ps3 745) tal3,aca 24% 
— Mocktreense ... Sow. .......000+. Pd oc ese laed loc aco fsaclload bee ves[eee] te [ooe|eee] ge [eee]eee] Sil. Syst. p. 616, 705, t.6, f.11; ib, Siluria, 4 ed. t. 20, 
one 
— dated jan 50) load ood 200 eal cani|eelleae eve lleee'llave lineal) VecerActimoceras. 
_— Sol lees] Bon meal fe: [ese eae ben lnee lees leealcealcedleealeealy Geolesepbs pag 07s bar25 site 5510: 
— Pa aeey oe Sale Esa kos veslece{eoel ae [oon] ae feeefeee] Mem. Geol. Surv. vol. ii, pt.1, p. 345, 13, f. 2-4. 
Lituites ibex, ? L. articulatus, Sow. Sil. Syst. t.11, f. 7, 
t.11, f.6. O. perelegans, Siluria, 4 ed. t. 29, f. 5,6. 
— politum ......... WE Coy) rwenae ce's\|"s3|(enelleee|(ses]ese *|'* Brit. Pal. Foss. p. 316, t.1 L, f. 30; ib. Salt. Q. J. Geol. 
Soe. vol. vii, t. 10, £. 5, 
— Pomeroense...,.. Portl......cccc00 Siel| oval coal eas | ce~ 0] (£23 |lood bee sesleee[ece{ece]eeefeeefeeefeee| Geol. Rept. p. 370, t. 24, £. 4. ? O. Mocktreense, Sow. 
— primevum ...... Forbes - .....0.0 &3 lod eer loca Bae 68 (food Be veslae [eee] ae feceleecfeee]ee.] Creseis, Q. J. Geol. Soc. vol. i, p.146; ib. Siluria, p. 232, | 
Foss. 62, f. 4; ib. Sharpe, Q. J. Geol. Soc, vol. ii, t. 13, 
£22: 
= repulare ......... Miinst. ....... 2G hor eaten Peg Beall eal loo He sesfecs[eos|oeefacefere{eee{oe.| Beitr. 3, p. 95, t.17, £3,453 ib. Portl. Geol. Rept. p. 377, 
t. 27, f. 4. Koleoceras pseudo-regulare, Portl. ib. p. 379; 
2,265 52: 
— semipartitum ,., SOW. ....ce.e0e0s sen) ap] looe| [sad fad “681 bool dod 60 soalieae|soe|esz]eee|eer]ses|e.| V2@e Dretoceras, 
— sericeum ......... Sale icccccetenes Fs) |E°2 jpoalleea| aac) oo se.lece[eeelese{eee{eee[eeeeee] Mem. Geol. Surv. vol. iii, p. 356, t.10, f. 4, 5. 
— striatopunctatum Miinst. ......... .|«|..-|...| Beitr. heft 3, t. 20, f. 1. 
50) lon a Balle Iles foes celeclecesecfese{eee{eee|eee| Beitr. heft 3, t. 19, £. 3. (O.subannulare), O. subannularis, 
Portl. Geol. Rept. p. 368, t. 25, f.7,8. O. (Cycloceras) 
subannulatum, M‘Coy, Brit. Pal. Foss. p. 320. 
— subannularis ,., Portl............. ranlloge| eal is] Bae eral esl ery Ree sesfecsfece|eec[eee|eee{oee]---| ede O, subannulatum. 
— subareuatum ... Portl............. reer eos eee Pes Poles lcad fee culled: Geol. Rept. p. 374, t. 28, £. 9. 
— subcostatus...... Ort eewseceesees ee | ee | es | ee eee ¥ Sealleel oe Ale Geol. Rept. p. 371, t. 26, f. 6. 
— subgregarium... M‘Coy ......... Bed scr bec) Ieee eee [Gaal ee lec te leer] ge [ove] ae |-ee]-oe]-e-{ & | Symop. Sil. Foss. Irel. p. 9, t.1, f. 4. 
— subundulatum Portl............. sea) ete eee eee sen 2a lone abe cel x [occ] x [eecl ]eec[ee.| Geol. Rept. p. 373, t. 28, £. 2. Creseis Sedgwickii, Forbes, 
Q. J. Geol. Soc. vol. i, p. 146, f. 2. O. subundulatum, 
Siluria, 4 ed. p. 232, Foss. 62, f. 3. 
— tenuiannulatum M*Coy alee ba vecfeceleee[cve]eee]eee|eoe] ac | ae | [eeeleee| Cyeloceras, Brit. Pal. Foss. p. 320, t.1 L, f. 31. 
— tenuicinctum ... Portl.........0008|.c.[ece|ee.|es:foee ge leecf elec] ae [eee] 2|.] x [.e.|.-.| Geol. Rept. p. 371, t. 27, f.55 ib. Siluria, 4 ed. p. 200, 
Foss. 42, f. 3. 
— tenuis... Wallessesssrevee. 5 |po4 bos meld ees | oe vesfecsfeeefesefese[oeefoee[eee] Upsal, Vill. or; ib. His. Leth. 2, p. 113, 6.35, £35 ib. 
: Geinitz, Die Verst. Grauw. p. 28, t.19, f. 2-12. 
— tenuistriatum.., Miinst. ......... Beer [aes seclae [ae [ae [ece{eeeecc/eee|oee{eee{eee]eee] Beit. heft 3, t.19, £4; ib. M‘Coy, Brit. Pal, Foss. p. 317. 
— textile............ Phillnccesccees alesse ee lec hel ee valece{ece{eee]eee ae [eeefeee| Mem. Geol. Surv. vol. ii, pt.1, p. 353, t.13, £. 5,6. 
— torquatum ...... Miinst, .....1... cod 68) belle fase Boo) onc) [ne ace re |eoclesalers|eeslae |eee|ee-|) Beitr: heft 35, p.0o1. 
— tracheale......... Sow. seccoace meray ere sc be lee: fees sac[cce[ec-fooe|eeel ac [eon] ac [eee] ae [eee] ae | Sil. Syst. p. 604, 705, t. 3, f.93 ib. Siluria, 4 ed. t. 34, 
f. 6. ? O. perelegans, Salt. Mem. Geol. Surv. vol. ii, 
pt.1, t.13, £. 2,3. Cycloceras, M‘Coy, Brit. Pal. Foss. 
p. 321. 
— triangulare...... POrtlinecsscatsere 660} kde lade) Bes fr leodl Wael ee 5 eee | eae | Meet eeallesel|ena|eaea rede necss 
— tumidum Portl BSA lecd [bod ioe a eaclkae [eee |e ss veal coal ece| heel eeelees|ecc|icas| GeollReptsrpysi73snterzs, 1.5510. 
soloed ee sel gee) bo veclecclecc|eec[ece/eee[ee-{e2-|° Pal. New York, vol. i, p. 202, t. 43, f.7; ib. Q. J. Geol. 
Soc. vol. xv, p. 375, t. 13, £. 25, 26. 
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