840 



Mr. Williamson on the Distribution of 



GENUS AND SPECIES. 



FORMATION. 



Astarte minima 



Cardium truncatum 



multicostatum . • . . 



' — incertum 



Cardita similis 



Isocardia lineata 



■ — concentrica . . . . 



Cucullaea cancellata 



Nucula ovum 



axiniformis 



Trigonia literata 



angulata 



costata 



gibbosa 



striata 



clavellata 



duplicata 



Unio abductus 



distortus 



Hippopodium ponderosum.. 

 Modiola scalprum 



Hillana 



cuneata 



pulchra 



Mytilus sublaevis 



Pinna folium 



cuneata 



Perna quadrata 



Gervillia acuta 



Inoceramus dubius 



Avicula cygnipes 



. insequivalvis 



echinata? 



Braarnburiensis .... 



Plagiostoma Iseviusculum . . 



interstinctum . . 



Pecten aequivalvis 



sublaevis 



abjectus 



virguliferus 



— lens 



Plicatula spinosa 



Gryphaea depressa 



Phill. 9, fig. 23 



Sow. 552, fig. 3 



Phill. 13, fig. 21 



Phill. 11, fig. 5 



Sow. 232, fig. 3 , 



Sow. 491, fig. 1 



Phill. 11, fig. 44 



Sow. 476, fig. 1 



Phill. 11, fig. 13 



Phill. 14, fig. 11 



Sow. 508, fig. 1 



Parkinson, Org. Rem. III. 12, fig. 4. . 



Sow. 235,236 



Miller, 237, fig. 1—3 



Parkinson, Org. Rem. III. 1 2, fig. 3. . , 



Sow. 237, fig. 4, 5 



Phill. 11, fig. 42 



Bean 



Sow. 250 



Sow. 248, fig. 2 



Sow. 212, fig. 2 



Sow. 211, fig. 1 



Phill. 5, fig. 26 



Sow. 439, fig. 3 



Y. & B. 10, fig. 7. Phill. 14, fig. 17 



Phill. 9, fig. 17 



Sow. 492 



Sow. 510, fig. 5 



Sow. 584, fig. 3 



Y. & B. 9, fig. 3. Phill. 14, fig. 3 . . 



Sow. 244, figs. 2, 3 



Sow. 243, fig. 1 



Sow., Phill. 6, fig. 6 



Sow. 382 



Phill. 7, fig. 14 



Sow. 136, fig. 1 



Phill. 14, fig. 5 



Phill. 9, fig. 37 



Phill. 11, fig. 20 



Sow. 205, figs. 2, 3 



Sow. 245 



Phill. 14, fig. 7 



Inf. and Great oolite. 

 Marlstone. 



Inferior oolite. 

 Inf. and Great oolite. 

 Marlstone. 

 Inferior oolite. 

 Great oolite. 

 Alum shale. 



Inferior oolite. 



Inf. and Great oolite. 



Inferior oolite. 



Great oolit 



Inferior oolite. 

 Great oolite. 

 Lower lias. 

 Marlstone. 



Inferior oolite. 



Lower lias. 

 Great oolite. 



Alum shale. 



Marlstone. 



Marlst. Alum shale. 



Inferior oolite. 



Inf. and Great oolite. 



Marlstone. 



Great oolite. 



Marlstone. 



Inferior oolite. 



Great oolite. 



Lower lias. Marlstone. 



Lower liaj. 



