LIST OF PLATES. 



,*., The numbers on the left hand indicate Ilie figures on the plates, and those on tlie right refer to the pages containing the detailed 



djscription of the several specimens. 



Fig. Pag. 

 Plate 1. 



1 Arthrophycus harlani 5 



Plate 2. 



1 Arthrophycus harlani 5 



3 Scolithus verticalis 6 



Plate 3. 



Dictuolites beckii G 



Pakeophycus tortuosns ... C 



Fucoides auriformis 7 



— heterophyllus 7 



Plate 4. 



1 Chaitetes ? 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 — litorca 12 



5 Bucania trilobatus 13 



6 Oncoceras gibbosnm 13 



7 Orthoceras 14 



8 — multiseptum 14 



Plate 5. 



1 Buthotrcphis gracilis 18 



2 — — far. intermedia, 19 



3 — — var. crassa ... 19 



Plate 5 a. 



1 Buthotrcphis gracilis? -0 



[ Paleontology — Vol. ii 



Fig. Pag. 



Plate 6. 



1 Buthotrcphis palmata 20 



2 — impudica 20 



3 — 



ramosa 21 



Plate 7. 



1 Buthotrcphis palmata 20 



2 Roots of Buthotrephis 21 



Plate 8. 



1 Eusophycns clavatus 23 



2 — subangulatus 23 



3 PaU-eophycus ? 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 ... 2-5 



Plate 10. 



1 Palfeophycus? striatus .... 22 



2,3 — ? 22 



4, 0, 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 



Fig. Pag. 

 Plate 15. 



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 Chffitetfis lycoperdon 40 



2 Favistella favosidea 41 



3 Caninia bilatcralis 41 



4 Cyclolitcs rotuloides 42 



Plate 18. 



1 Cann.ipora juncifonnis 43 



2 Catenipora escharoides 44 



3 Helopora fragilis 44 



4 Stictopora crassa 45 



5 — raripora 46 



6 Pha:nopora explanata 46 



7 — constellata 47 



8 — ensifonnis 48 



Plate 19. 



1 Rhinopora verrucosa 48 



2 — tubulosa 49 



3 Retepora angulata 49 



4 Fcnestella prisca ? 50 



5 — tenuis 51 



Plate 20. 



1 Lingula oblouga 54 



2 — oblata 54 



3 — perovata 55 



4 — lamellata 55 



5 — acutirostra 56 



