CAMBRIAN. LOWER SIL. 
PALMOZOIC, 
SPECIES. 
Rhynchonella (continued). 
— Weaveri ......... DS GUGM verseeves 508|o60l [acs 
— Wilsoni ......... OWA Waa. ccersess Bea lene is 
DISCINID®. 
Siphonotreta...... De Vern. 1845.. 
— anglica ......... Or ris seccoere edol{aod [ota 
— micula,........... TS OU nesses sed Ina focedl coed (es 
SPIRIFERID®. 
Spirifera............ PhApS 60.0000 
Spirifer: ......... Sowerby, 1815 .. 
Terebratulites.. Schloth (part).. 
Choristites ...... Fischer, 1825... 
Trigonotreta ... Kenig, 1825 ... 
PA King, 1849...... 
Delthyris ...... Dalmann, 1827, 
; used by Hall... 
Martinia...... } 
Spirifera...... 
the ee MS Coy) vo scenes: 
Brachythyris 
Reticularia:.. 
OU) OF Lee ecavanaceasauawedan= scenes peal lec kone 
— bijugosa ......... IME COUT Seasons epalipedl (eee 
Sel CRISDS)..5 cease cise Fi8s. 5. Seachahadase 
BRACHTIOPROD A CAMBRIAN AND SILURIAN. 
UPPER SILURIAN. 
Up. Llandovery. 
Woolhope Linst. 
Wenlock Shale. 
| Wenlock Lmst. 
Aymestry Lmst. 
Upper Ludlow. 
Tilest. & Passage. | J 
Pass up. 
| Har. St. David’s. 
| Menevian. 
| Lingula Flags. 
| Tremadoe, 
| Caradoe or Bala. 
| Low. Llandovery. 
| Lower Ludlow. 
| Arenig. 
| Llandeilo. 
REFERENCES. 
Dav. Mono. Brit. Sil. Brach. Pal. Soe. p. 185, t. 24, £.14. 
(Salter, MS.) 
Anomia lacunosa, Linné, Syst. Nat. 12 ed. vol. i, pt. 2, 
p- 1153. Zereb. Wilsoni, Sow. Min. Conch. vol. ii, p. 38, 
t.118, f. 3; ib. Sil. Syst. p.615, t.6, f.7. 7’. erebricosta, 
id. ib. t.13, f.18. T. pentagona, Sow. Sil. Syst. t. 5, f. 21. 
T. Wilsoni, De Vern, Geol. Russ. and Ural. p. 87, t. 10, 
£.8. Atrypa, M*Coy, Synop. Sil. Foss. Irel. p. 42. Rhyncho. 
Dav. Ann. Mag. Nat. Hist. 2ser. vol.ix, t.13. Hypothyris, 
Phill. Hemithyris, M‘Coy, R. Wilsoni, Schmidt, Archiv. 
Nat. Liv. Ehst. und Kurlands, vol. ii, p. 210; ib. Salt. 
Siluria, 4 ed. t.22, f.13. R.pentagona, id. ib. t. 22, f. 3. 
R. erebricosta, id.ib. t.22,f.7. Tereb. Sil. Syst. R. Wilsoni, 
Day. Mono. Brit. Sil. Brach. Pal. Soc. p.167, t. 23, £.1-9. 
R. Wilsoni, var. Davidsoni, Hemithyris, M‘Coy, Ann. Mag. 
Nat. Hist. vol. viii, 2 ser. p. 392; ib. Brit. Pal. Foss. 
p. 200; ib. Dav. Mono. Brit. Sil. Brach. Pal. Soe. p. 172, 
t. 23, f. 11-14. R. Wilsoni, var. Spheroidalis, Hemithyris, 
M‘Coy, ib. p. 393; Brit. Pal. Foss. p. 206, t.1 L, f. 4. 
R. Wilsoni, var. Spheroidalis, Dav. Mono. Brit. Sil. Brach. 
Pal. Soc. p. 173, t. 23, £. 10. 
~~ 
Ann. Mag. Nat. Hist. 2ser. vol. iv, p. 320, t.7, f.1a-e; ib. 
M‘Coy, Brit. Pal. Foss. p.188; ib. Siluria, 4 ed. p. 226, 
Foss. 58, f.10; ib. Dav. Mono. Brit. Sil. Brach. Pal. 
Soc. 1866, p. 75, t. 8, f.1. 
Ann. Mag. Nat. Hist. 2 ser. vol. viii, p. 389, 18513 ib. Brit. 
Pal. Foss. t.1 H, f. 3, p.185: ib. Salt. Siluria, 4 ed. 
Prh1, Mossy 0. Use 220; Loss 85 ot 3) bee Day. 
Mono. Brit. Sil. Brach. Pal. Soc. p. 76, t. 8, £. 2-6. 
Vide Orthis biforata. 7 
Synop. Sil. Foss. Irel. p. 36, t. 3, £. 23; ib. Salt. Expl. sheets 
160, 161, 171,172, Geol. Surv. Irel. p. 13 ib. Dav. Mono, 
Brit. Sil. Brach. Pal. Soc. p. 89, t. 10, £. 1-3. 
Terebratula, Vet. Akad. Handlingar, t. 7, f. 4. Delthyris, 
Dalm. Vet. Akad, Handl. p. 222, t. 3, f.6; ib. Hising. 
Anteck. vol. iv, p. 220, 238, t.7, f.45; ib. Leth. Suec. 
p. 73, t.21, f. 5. Spirifer, Sow. Sil. Syst. t.12, f.8; ib. 
Hall, Pal. New York, vol. ii, p. 262, t. 54, f. 3; ib. Salt. 
Siluria, 4 ed. t. 21, f. 4; ib. Day. Mono. Brit. Sil. Brach. 
Pal. Soc. p. 97, t.10, f.13-15; id. ib. Trans. Glasgow, 
Geol. Soc. Up. Sil. Brach. Pent. Hills, p. 10, t.1, f. 9, 10, 
1868. 
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