PALAOZOIC. TBs Dey IN CO} BL IL @) 12) 1D) AN. CAMBRIAN AND SILURIAN. 
| CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
| - nS Si =< =) 
a = 7 ] 5 
a s| bp). 5 2 
& | Pl et |3 
. tes ro aiole!2 lel] s| 2 
irs Ep SiSio|s ei/cs/2/8 
= &p AlSifl5 o/s |o]a 
) S Irs c|e = |i) 3 
Aldelsle -| el ala | S| IS lau 
EIS s sl ol/S138/2 S| >) 5] 
SPECIES. ss/-SlealSl .jelolslslé AleIAlS) 6 REFERENCES, 
“Qls\s 21M 21S iis |/a w/2lel 5/5 
ala) Sl Sfalslsisi— SP) e/2ia2) a 
S/9/.2/S12/S| 81S] ays El S| lo) 2 
hs | |, | |o| Pl Bis | 3 
Hie IRI iAlolAlp |= Ris PRS 
Orthis (continued). 
= ANTS Saapsosaoccnaa Dany acencicusee Bad} foo) food [eee] pes see] ok [aeePere vesferslee/iccteeeloeelace/eee! Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 177, t. 13, 
Leolids 
| 
a) 
E 
Ee 
2 
Li Seacte sweats DOGO. aspen acess cael foo facet food loos oo | alta Hoc sesfers}eeeliec[eretees}eee/.e.! Sup. Mono, Sil. Brach. Pal. Soc. vol. xxxvii, p. 188, t. 11, 
f.913;)0d- 
— pulvinata......... SAlt. secccorerees opal (ann) faba) aoe [one vee] ak [eoefoes see[eee]oeslaesferrferefaeetane! Q. J. Geol. Soc. vol. xx, p. 294, t. 17, £.85; ib. Dav. Sup. 
Mono. Sil. Brach. Pal. Soc. vol. xxxv, p. 357, °t. 41, 
feLOs Lilie 
— Rankini ...... Ret DD QU wex cescnents =r) (coal esa) fod for Pod fo ieee ee verfere]see}cJeee{eee}.ee]ee8] Sup. Mono, Sil. Brach. Pal. Soe. vol. xxxvii, p. 190, t. 11, 
f. 17-19. 
— Shallockensis... Dav. ......000+ £60) -oel los [eee (Gee) oda) lao] lose jose ses[ees|see[ecs[ece]ecefece/eee| Pade Skenidium. 
-— Vaticena,........ GMs seceusereses sea[cee]eee| coe[ooe| ose] ere[oee|ees|ecs]=rtloesleceleos[eeetee-|---] Made O. lenticularis. 
RHYNCHONELLID®. 
Pentamerus......... Sowerby, 1813 
— Shallockensis ... Dav. ........666 Boo|(204 foael fied [occ Sod = |loodl bop veleelolialeesloe{eee|eee| Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 163, t. 9, | 
f, 6-9. 
72 
CRANIAD®. 
Pholidops ......... Hall, 1859...... 
— implicata......... OWS) cavcacsonens bad ooo bed load aad [bed eed lace) Ines seeleseleselessferslese[eceleee| Peae Crania. 
RHYNCHONELLIDS. 
Rhynchonella...... Fischer, 1809 
— Balcletchiensis Dav. .......... 03) so fas fa084 |si00) |ooa £5 |loGel ood loos serfereleee|ess[eeelees]eee]e-| Sup. Mono. Sil. Brach. Pal. Soe. vol. xxxvii, p. 160, t. 10, 
iS Ls HOLS Tie aay oem ey, 
— Callawayiana ... Dav. ............ apo foe jase food (69 a6e||a6alfood bac ser] oe |oee[eeefeee[eee[aee]-ee| Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 159, t. Io, 
f. 18. 
— cuneatella ....., DGO i eceteee PAlcsalacalecaiwss ¥loesl seston sea[eee|see[eee{eeefece].e-/---| Sup. Mono, Sil. Brach. Pal. Soc. vol. xxxvii, p. 200, t. 10, 
LCT. 
rq lane] leon wes[ecefeoef - [os] 2 | & [ee-]-ee[eee]-ee|---| Stup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 152, t. 10, f. 2. 
— Girvaniensis ‘I ec loa al lec) eal Eo sesfose|.ee|.efeeefeee].ee|+ee| Susp. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 155, t. 10, f. 26. | 
— Glassii ............ Alleadl aoe Bre lfeeral ae eee % |eer]eee]..-[eee]---[..-|---] Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 155, t. 10, 
f. 22. Atrypa depressa, Sow. Sil. Syst. p. 629, t. 13, £.6. 
— Jackii ............ De Bo feel eos Ieee] Fado ped fs lane oe seelere|oeefeee[eee|-e-{-e-]---] Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p.158, t.9, f. 30. 
4|[oaq aoe | \eaal hood {aon sesfece[ece|eesfeee|oee[eee]-«-| Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 154, t. 10, f. 7. 
— Maccoyana celled pos vee oe [ecefore]ers|e+|ees[eee]ere[eee]eee]---] Sup. Mono. Sil, Brach. Pal. Soc. vol. xxxvii, p. 161, t. 8, f. 33. 
— Peachii 2 20..2..< : ac4||oca| bacl land aoe | Beolloed ee secfees[ecefoes[ece{eee{eee]oee] SUD. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 201, t. 11, f, 25. 
— Scotica............ . cvalllesalllees| sa| sie aoa oad land seefeee[eee]ese[eee{eee{eee]..-] Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 201, t. 11, f. 26. 
— Lapworthi 
— Shallockensis ... Dav. ............ Be lecal local Ince soe el pease tess vis[ee[ece[ece]ees[eee{eee]ee] Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p.155, t. 10, f. 19. 
— sub-borealis...... IDWES, ecerpcoocce: ad bea see|isec| ees ae [ovefoofeee{ee-[ece]eee[eee[eee{eee{.e-]...| Sup. Mono. Sil. Brach. Pal. Soe. vol. xxxvii, p. 149, t. 10, f. 5-6. 
== S)tbscopodanacand D GU iccctecs see pac opal Idod Real es 3 (oat food (abc see[ece|oee]-ee]eee{eee{.e-]...] Sup. Mono. Sil, Brach. Pal. Soc. vol. xxxvii, p. 201, t. 11, f. 24. 
DIscInIpz. 
Siphonotreta ...... De Vern. 1845 
eaSCOLICA etree rs Daoy, Sere Fel lace oa bed Bae | Sele ae wea|..-[eee[ove|eee[eoe|eoe{--e| Geol. Mag. new ser. vol. iv, p. 13, t. 2, f. 5,6, 1877; ib 
Sup. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 217, t. 16, 
£, 31-33. 
STROPHOMENIDS. 
Skenidium ......... Hall, 1860 
— Mystrophora ... Kayser, 1871... 
— Gray ............ IDG. Recccescses sesfeve[oos|oee[ooe{eee] | of eoe]oee|eee{eeeleee|-ee{ee.]ee-]-0.] Stp. Mono. Sil. Brach. Pal. Soc. vol. xxxvii, p. 175, 6. 11,f. 3-5. 
