PALAOZOIC. CEPHALOPODA. CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
SSS SS SSS =] 
a AS PSS AA SESH alle 
=) lal | | (SEV |eIEIE VE 2 
B| .|3 RIS eae la|slela 
Alalels 2|s/EIsl\ol#/4F/8] ./ 51a 
SPECIES. hele |S JAS) slSlEISISISIAISIAlS] 4. REFERENCES. 
OVE SMS ISIS IS Si sislslele 
AE Be BeaSaelene 
BISISIB/SIAISIS|P IF IE IE IRIS 16 | 
Orthoceras (continued). 
—_ Brightit PEO OW. oecscrekhys Pantano dae (ase brat Ada| ant facal (obo Isoctlano veclecelees|ecs{eselees| Vede Actinoceras. 
Conotubularia, Mém. de la Soc. Géol. de France, vol. iii, 
p. 88, 89. Orthoceras, Portl. Geol. Rept. p. 368, t. 28, 
f. 4; ib. Siluria, 4 ed. p. 200, Foss. 42, f. 4. Ortho. 
Geinitz, Verst. Grauw. p. 29, t.19, f.1. 
— bullatum.,........ ISCEY Sqonsoono00> 550) |000| [aad Ieee) [Soo ves{ese|ene] oe [oes] ae [ore] ok [eee] & |-oe]ee-] Sil. Syst. p. 7o5, t. 5, £.29. P O.striatwm, Sow. ib. p.604; 
ib. Siluria, 4 ed, t. 29, f.1. 
Q. J. Geol. Soc. vol. xxxi, p. 189, t. 11, f, 8-10. 
— Brongniarti ... Troost............ lfeeell tes liatee aes I) 34 lose (sos) loos| food 3c pee] lode jade) ooo |S85 
— Caereesiense ... Hichs............ B8d| eo pol aaa Pacllevallesa| hte S05) Reallecal loa 
— calamiteum...... Miinst.  vcecceres Boo| boo lian0|[oadl aod Farell jewel ese tee cesleca[eeeece{oee{ees]eee{eee| Wade O. bilineatum., 
Sil. Syst. p. 632, 706, t.13, f. 26; ib. Siluria, t. 28, f. 3. 
— canaliculatum,., Sow. .....:...6 Pad cealteclt cel ans peel eel see se sell ded wee eel el fase ferell lest 
—OMFINGLUND sevice, DOM: ces ssecevese|ece| seo] ere ecs|(es=|lsei lee] eme|(ee=lines Doubtful British species. 
— centrale ......... is. Sed [dec| {eal 154 [G0e asd led) bod vesfccefese[ece{eee{eee[eee]-e*] Leth. Suec. p. 29, t.9, £.43; ib. M‘Coy, Brit. Pal. Foss. p. 314. 
— circulare ...,..... 5 | (nol lagel ieee jae sarees I cate ere wee] Ble [ece]-cc]ee|-ee]-ee| Min, Conch. vol.i, p. 133, t. 60, £. 1-3. 
— complanato-septum Portl.,........ apa Se0| [ec fob! (Son) || looc [ng faa Peal coal ees lees eselleeelleee| =e GeoledRept. pes 745ite 2 ous tente 
— conicum ......... Sow. Alera es sesleaclere{ a | 4 [evel soe|eeslaen[eee|oee[ees| Sil. Syst. p. 642, t. 22, £21. ? Conicum, His, Leth. Suec. 
p. 29, t. 9, f. 5. 
— coralliforme ... M‘Coy ......... Bealealteealecal nes S6¢||acc P| calles |se+|ane|e]ece| [e+] SSynop. Sil. Hoss. Irel.—p.8, t.1, £23. 
Sil. Syst. p. 620, 705, t. 8, f£.18; ib. Mtinst. Beitr. vol. iii, 
p. 98, t.19, f. 2-5; ib. Salt. Siluria, 4 ed. t. 28, f. 5. 
O. tenue, Wahl. Nova Acte Reg. Soe. Scient. Upsal, 
yol. viii, p. 91; ib. Geinitz, Die Verst. der Grauw. p. 28, 
t.19, f. 2-12. 
a6| 654 foo 0a) 08 fooe| (Sco vea[oee| a [eee[eee]oae{eee[---] Sil. Syst. p.619, 705, t.8, £.17; ib. Siluria, 4ed. t. 26, f. 4. 
Geol. Rept. p. 372. t. 27, f. 2. ? O. tenue, Wahl. 
Siluria, 2-ed. p. 50, Foss. 8, f.10; ib. Mem. Geol. Surv. 
vol, iii, p. 356, t.11 B, f. 20. 
Sil. Syst. p. 631, 706, t.13, f. 16. 
Sil. Syst. p. 620, 706, t.9, £.3; ib. Siluria, 4 ed. p. 232, 
Foss. 62, f. 1. 
Vide O. annulatum. 
Geol. Rept. p. 366, t. 25, f. 2. 
Sil. Syst. p. 619, 705, t.8, £.16; ib. Mist. Beitr. 3, p. 97, 
t.18, f.1. ? O. angustiseptatus, Mist. 
Lituites, Sil. Syst. p. 613, 705, t. 5, £. 30; ib. Siluria, 
4 ed. t. 29, £. 3,4. Hortolus, M‘Coy, Brit. Pal. Foss. 
p- 324. Orthoceratites annulatus, His. Leth. Suec. t. 9, 
f.8. ? O.articulatum, Sow. (Lituites), Sil. Syst. p. 622, 
t. 5, f. 31, t.11, f. 6. O. (cyclo.) annulatum, M‘Coy, 
Brit. Pal. Foss. p. 319- 
Upsal, vol. viii, p. 89; ib. His. Leth. Suec. p. 29, t.9, f£.9; 
ib. Sow. Sil. Syst. p. 620, t.9, f. 2. ? Phill. Pal. Foss. 
t. 41, f. 207. O. imbricatum, Siluria, 4 ed. t. 29, f. 7; 
ib. Hall, Pal. New York, vol. ii, p. 291, t. 61, f. 4, t. 62, 
f. 1-3. 
— incertum......... Porth, ...0.000 Go a4 feos cool ldao) bod jae Sed llood loos Peallevallosdl eee |eee lace lea lee iGeoleuRept. ps 3745ute205) c007- 
Beitr. 3, p. 100, t.19, f. 11; ib. Portl. Geol. Rept. p. 375. 
Pal. New York. vol. i, p. 206, t. 56, £.1; ib. M‘Coy, Brit. 
Pal. Foss. p. 315. 
Leth. Suec. p. 29, t. 9, £.6; ib. Portl. Geol. Rept. p. 370, 
t. 27, f. 3, t. 28, f.1; ib, M‘Coy, Synop. Sil. Foss. p. 9. 
Beitr. 3, p.99, t.19, f.1. ?O. bacillus, Eichw. Zool. 2, 
p- 31, t. 2, f.14; ib. Vern. Key. and Murch. Geol. Russ. 
vol. ii, p. 353, t. 24, £.8. ? O. Mocktreensis, Sow. 
— dimidiatum...... (SOW s) a fewscuereess Pa alivcel Saallent bees Sool Res Beal (dee Boal Ie lecel Pe sal fos Le oe Igaet fone 
— excentricum .., Sow. secre Fallyealleenl lvoe pis scale ea [lee Bre eal sere Vea sere ea ltereelltnees 
— filosum ......... ISO Ws) We ctisteitennres baal lad) loocl food! joa be 6H [2 lbo¢ lead lbeol|'3'|Iood| [oad aos) fos 
— imbricatum...... Wann weorsces Boal teccl | atalleal eat ran teou lea ets are | (aera lhecel lieu sere asea| eae 
— irregulare ......, Miinst.  v.cssesss Spal cen! loool lea fa00 ae 
— laqueatum ...... SGU (ees snene st Bec 650 facelea4 [dos sol 2 |[o09 loos ates Os Ball fete eal er | teed | es 
— lineatum......... UT ies ecancavesuss 864 (eco Ieee [eed eb? Bed | faod| (ean 650) |o04 hoe ocd] [ase [24 hod [ee 
— lineare...,,....... Miinst. ....0.00+ scleealvaaleea less ee dl set coed tose Baal (sae ea8 head fee! oar eos foci 
