LIST OF PLATES, 
.,** The numbers on the left hand indicate the figures on the plates, and those on the right refer to the pages containing the detailed 
d iseription of the several specimens. 
Fw. Pag. 
Plate 1. 
1 Arthrophycus harlani. 5 
Plate 2. 
1 Arthrophycus harlani. 5 
2 — -—? .. 6 
3 Scolithus verticalis ... 6 
Plate 3. 
1 Dictuolites heckii. 6 
2 Palaeophycus tortuosus ... 6 
3 Fucoides auriformis . 7 
4 — heterophyllus .... 7 
Plate 4. 
1 Chsetetes --? ... 7 
2 Lingula cuneata. 8 
4, 5 Atrypa oblata . 9 
6 — plicata . 10 
7 Murchisonia? conoidea. 13 
8 Cytherina cylindrica. 14 
Plate 4 (bis). 
1 Modiolopsis orthonota .... 10 
2 — ? primigenius. 11 
3 Pleurotomaria? pervetusta. 12 
4 — litorea ... 12 
5 Bucania trilobatus.. 13 
6 Oncoceras gibbosum....... 13 
7 Orthoceras •. 14 
8 —. multiseptum. 14 
Plate 5. 
1 Buthotrephis gracilis. 18 
2 — —- var. intermedia, 19 
3 — — var. crassa... 19 
Plate 5 a. 
1 Buthotrephis gracilis?..... 20 
[ Palaeontology — Vol. ii. 
Fig. Pag. 
v Plate 6. 
1 Buthotrephis palmata. 20 
2 — impudica. 20 
3 — ramosa. 21 
x Plate 7. 
1 Buthotrephis palmata. 20 
2 Roots of Buthotrephis. 21 
Plate 8. 
1 Rusophycus clavatus. 23 
2 — subangulatus. 23 
3 Palaeophycus ——? ....... 22 
4, 5 Roots of Plants. 25 
6 Rusophycus pudicus. 24 
Plate 9. 
1.2.3 Rusophycus bilobatus .. 24 
4 Stems of a marine plant... 25 
Plate 10. 
1 Palaeophycus? striatus .... 22 
2.3 — -?. 22 
4, 5, 6,8 Roots and stems of 
^ plants, 25 
7 Ichnophycus tridactylus... 26 
9,10 Roots of Buthotrephis .. 21 
Plate 11. 
1, 2, 3, 4 Trails of Gasteropoda, 27 
Plate 12. 
1, 2, 3, 4 Trails of Gasteropoda, 29 
Plate 13. 
1, 2 Trails of Annelida ....... 30 
Plate 14. 
1, 2, 3 Trails of Annelida?. 31 
4 Trails of small gasteropoda, 31 
] 47 
1-6 Trails of Crustacea?. 35 
Plate 16. 
1-4 Tracks of Crustacea or 
Fishes, 36 
Plate A 17. 
1 Graptolithus clintonensis .. 39 
2 — venosus. 40 
Plate 17. 
1 Chaetetes lycoperdon. 40 
2 Favistella favosidea. 41 
3 Caninia bilateralis . 41 
4 Cyclolites rotuloides. 42 
Plate 18. 
1 Cannapora junciformis. 43 
2 Catenipora escharoides .... 44 
3 Helopora fragilis . 44 
4 Stictopora crassa. 45 
5 — raripora. 46 
6 Phsenopora explanata. 46 
7 ■— constellata. 47 
8 — ensiformis . 48 
Plate 19. 
1 Rhinopora verrucosa. 48 
2 — tubulosa. 49 
3 Retepora angulata. 49 
4 Fenestella prisca? ...._ 50 
6 — tenuis. . 51 
Plate 20. 
1 Lingula oblonga ... 
2 — oblata.... 
3 — perovata.. 
4 — lamellata. 56 
5 — acutirostra. 56 
