20 



THE LIAS AMMONITES. 



No. 



10 

 11 



12 

 13 

 14 

 15 



1G 

 17 

 18 

 19 



20 

 21 



22 

 23 



24 

 25 



2G 



27 



28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 



LlTHOI.OGY AND LOCAL NAMES OF BEDS. 



37 

 38 



Thick- 

 ness. 



Liglit-coloure J clay 



Argillaceous limestone. " Top Liveries " 

 (lower) 



Clay 



Greyish limestone. " Extra rock," 

 " Thick paving-bed " 



Clay 



Greyish limestone. " Quarters." Thin 

 and irregular when covered by the 

 preceding 2 in. to 



Clay 



Greyish limestone. "Ribs." A con- 

 stant bed 



Clay 



Limestone. " Paving-stone " 



Clay 



Insect Limestone. "Bottom rock" ... 



Clay 



Limestone. "Hoggs" 3 in. to 



Strong hard clay 



Argillaceous limestone ; imperfect stone. 



"lluskin" 



Laminated clay 



Fragmentary shelly limestone. " Grizzle 



bed" 



Stony shale. 



Hard limestone. "Blue stone" or 



"Blocks" 



Hard clay 



Limestone. " Grave-stone rock " 



Clay. Thin hard plates of stone lie in 

 this clay 



Limestone, underlain by clay. (The 

 clay frequently wanting) 



Limestone; inconstant. " Gummerals" 



Clay. 



Hard grey limestone. " Fire-stone beds' ' 



Clay 



Limestone 



Clay 



Limestone 



Clay 



Hard dark limestone. "The Guinea- 

 bed." (This is the bottom bed of the 



quarry) 



1 in. to 



in. 







o 2 

 1 



6 

 3* 



•J 2 



3 

 10J 



n 



8 

 6 



n 



3 



6 



1 



11 



6 



Organic Remains. 



Aeyoceras Johnstoni, Sow. Insects' wings. 



No fossils. 



10 



Insects. 



A few Insects, and Pholidophorus Stricklandi, Ag. 



More Insects here than in all the other beds 

 collectively. 



Tetragonolepis angulifer, Ag. (Warwick Mus.) 

 No fossils in this bed. 



Saurian bones, Fishes' teeth and scales, Aegoceras 

 planorbis, Lima punctata, Protocardia Phillip- 

 piana, and Ostrea liassica ; spines of Cidaris 

 and other Echinidce abundant. 



Pleuromya Crowcombeia, and elytra of Coleoptera 



Ichthyosaurus and Otopteris acuminata, Lin. & 

 Hut. 



Ostrea liassica. 



~\ Saurian remains and Protocardia Phillippiana 

 | Modiola minima, PL Crowcombeia, and O. liassica. 

 [^ In these limestones and clays only one small 

 Aegoceras planorbis has been found. 



Saurian bones, Avicula longicostata, Stutch., 

 Monotis fallax, Lima punctata, Pleuromya 

 Crowcombeia, Ostrea liassica, Hemipedina 

 Tomesii, Wr., in numbers ; Septastrcea. 



Avicula Contorta Beds. 



Thick clay-beds ; yellowish blue ; break- 

 ing in angular fragments 



Dark ferruginous clay, with conchoidal 

 fracture, the Estheria-bed 



8 

 8 



[Belonging to the zone of Avicula contorta. 

 Estheria minuta, var. Brodieana. 



