54 



THE LIAS AMMONITES. 



4 



No. 



31 



32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 



40 



41 



42 



43 



44 



45 



46 



LiTHOLOGY. 



Brought over 



Variable blue-black shales, with scat- 

 tered doggers ; flat 



Thin whitened band 



Shales 



Whitened band 



Shales 



Harder whitened band 



Shale 



Thiols whitened band „ 



Blue shale, unseen in the clifl" with line 

 of crustacean nodules 



Hard brown limestone band, forming a 

 scar 



Hard blue shale, with line of scattered 

 doggers three feet down 



Hard calcareous rubbly stone, forming 

 a ve7y strong continuous scar 



Blue shale with oyster beds 



Indurated limestone band 



Soft blue smooth shale, with round 

 nodules 



Indurated calcareo-argillaceous rubbly 

 band, speckled brownish 



Total thickness 



Thick- 

 ness. 



ft. in. 



69 7 



14 











2 



1 



4 



8- 



10 



5 











9 



2 



3 



1 



8 







5 



8 







1 



3 



2 



4 



4 6 



3 6 

 2 



Paleontology. 



107 10 



Pentacrinus tuberculatus. 



Aeg. sagittarium, Bel. acuius, 



Ostrea arcuata, Bel. acutus. 



Aeg. sagittarium, Pent, tuberculatus. 



Aeg. sagittarium, Bel. acutus, Ostrea arcuata. 



Aeg. planicosta, Ar. obtusus, Ar. stellaris, Aeg 

 sagittarium, Hippopodium ponderosum. 



Pentacrinus tuberculatus, Bel. acutus, Pecten 

 priscus, Ostrea arcuata. 



Pent, tuberculatus, Pecten priscus, Ostrea 



arcuata. 

 Ostrea arcuata, Gardinia hybrida, Hippopodium 



ponderosum. 



Aeg. planicosta. 



The palaeontology of the Oxynotus-zowe is remarkable for the small nmiiber of species 

 it contains, when compared with the richness of the BucJdandi- and Angulatum-zonQ^ 

 which preceded and the fertility of the Jmnesoni-zonQ which succeeded it. 



Fossils of the Oxynotus-zone. . 



Amaltheus oxynotus, Quenst, 



— Lymensis, Wright. 



— Oppeli, Schlonbach. 



— denotatus, Sitnpson, 



— impendens, Young ^ Bird. 



— Simpsoni, Bean. 



— Guibalianus, d'Orbig. 

 Aegoceras biferum, Quenst. 



Pleurotomaria similis. Sow. 

 Actseonina fragilis. Dunk. 

 Cerithium gratuni, Terq. 



Cephalopoda. 



Aegoceras lacunatura, Buck. 



— gagateum. Young ^ Bird. 



— sagittarium, Blake, 

 Nautilus intermedius, Sow. 

 Belemnites acutus, Mill. 



— calcar, Phill. 



— penicillatus. Sow, 



Gasteropoda. 



Turritella Dunkeri, Terq. 



— Zenkeni, Dunk. 

 Hydrobia solidula. Dunk. 



