134 
ORGANIC REMAINS. 
Avicula. — 2. like ecliinata 
3. cygnipes (Young and Bird) PI. XIV. fig. 3. 
Pecten. — 1. sublaevis (Young and Bird) fig- 5. 
2. equivalvis (Min. Conch, tab. cxxxvi.) 
3. lens (Min. Conch, tab. ccv.) 
4. smooth 
Plicatula spinosa (Min. Conch, tab. cclxv.) fig- 16. 
Gryphasa. — 1. incurva (Min. Conch, tab. cxii.) 
2. Maccullochii (Min. Conch, tab. dxlvii.) 
3. depressa ... ... fig- 7- 
Spirifera Walcottii (Min. Conch, tab. ccclxxvii.) 
Terebratula. — 1. punctata (Min. Conch, tab. xv.) 
2. resupinata (Min. Conch.) Pl.XIII.fig.23. 
3. trilineata (Young and Bird) 
4. acuta (Min. Concli. tab. cl.) fig. 25. 
5. bidens (lineata, Young and Bird) fig. 24. 
6. triplicata... ••• fig- 22. 
7- tetraedra (Min. Conch, tab. lxxxiii.) 
Orbicula reflexa (Min. Conch, tab. dyi.) 
Turbo undulatus ... ... fig. 18. 
Trochus anglicus (Min. Conch, tab. cxlii.) 
Natica, cast of inside ... ... PI. XIV. fig. 10. 
Actaeon Pl.XII.fig.il. 
Rostellaria ? ... ... ... fig- 12. 
Nautilus. — 1. astacoides (Y. and B.) 1 fi 16 
lineatus? (Min.Conch.) ) 
2. annularis ... ... fig. 18. 
In calcareous nodules. 
Ditto, llilsdale, Wilton 
Castle, &c. 
Abundant in marlstone. 
In marlstone and ironstone. 
In marlstone, Bilsdale. 
In marlstone, Wilton Castle. 
In lower shale, Huntcliff, 
Robin Hood's Bay, &c. 
Pocklington, Robin Hood’s 
Bay, &c. in lower shale. 
In lower shale, Robin Hood’s 
Bay. 
In marlstone, generally. 
In calcareous nodules (very 
rare.) 
Marlstone. 
Ironstone, Wilton Castle. 
Upper shale, (also in the 
dogger.) 
Wilton Castle, Bilsdale. 
Wilton Castle, Staithes, 
Peak, &c. in ironstone 
and marlstone. 
Ditto. 
In marlstone and ironstone, 
generally, also upper shale. 
From the upper shale at the 
Peak, and Whitby. 
In marlstone. 
Lower shale, Leppington, 
and Robin Hood’s Bay. 
Lower shale, Robin Hood’s 
Bay. 
In calcareous nodules. 
Upper shale. 
Ditto, (Whitby Museum.) 
