258 



J. n. Cooke — Section in Middle Lias, Lincoln. 



From the foregoing details it will be observed that in this section 

 A. margnritatus has a higher range than has hitherto been ascribed 

 to this fossil in the Lincoln Lias ; and for a vertical distance of 15 

 feet the zones of A. spinatus and A. margaritatus overlap (vide 

 section layers 16 downward to 30). This, and the well-marked 

 line of demarcation between the Upper and the Middle Lias, as well 

 as the reappearance of the Marlstone series, mark this as one of the 

 most interesting sections in the Lincoln District. 



The following is a list of the fossils that I have collected from 

 this pit : — 

 Synoptical List of the Fossils found in Handley's Pit (Middle Lias). 



Plesiosaurus, sp 



Amaltheus margaritatus, Mont 

 A. Engelhardti, D'Orb. . . 

 A. solitarius, Simp. . . . 



A. spinatus, Brug. . . . 

 nautilus (4 specimens) . . 

 Belemnites clavatus, Blainv. . 



B. inceqiialis, Simp. 



B. vulgaris, Y. and B. . . 

 B. longiformis, Blake . 



Cerithium, sp 



I^ucyclus imbricatus, Sow. 



Utilima, sp • 



Bentalium elongatum, Miinst. 



Bentalium, sp 



Ostrea irregularis .... 



Ostrea, sp 



Pecten cequivalvis, Sow. . 

 Pecten (several sp.) .... 

 Lima pectinoides, Sow . . 

 Lima (several sp.) .... 

 Plicatula Hasina, Terq. . 



P. spinosa. Sow 



Monotis cygnipes, T. and B . 

 M. inmquivalvis. Sow. 



Gervillia, sp 



Lnoceramus, sp 



Pinna, sp 



Modiola scalprum, Sow. . . 



Cucullcea, sp 



Nucula, sp 



Leda galatJieajWOTh. . • 



Lucina, sp 



Unicardium, sp 



Astarte, sp 



Cardinia crassiuscula. Sow. . 



Pholadomya amhigua, Sow. . 



Goniomya \l -scripta, Sby. . 



Gresslya intermedia. Simp. . 



G. donaciformis, Phill. . . 



Pleuromya costata, Y. and B. 



Ceroinya, sp 



Somoiiiya, sp 



Zone of 



A. spinatus. 



Layers 1 to 16. 



Zone of 

 A. spinatus and 

 A. margaritatus 

 (mixed), Layers 



17 to 30. 



Zone of 



A. margaritatus. 



Zone 31 to . 



bottom. 



