1800.] 



WRIGHT LIAS. 



395 



Litifology. Thickness. Organic Remains ; and Local 



ft. in. Names of the Beds. 



No. it. in. 



2<). Laminated clay 1 (> 



21. Fragmentary shelly limestone 1£ 



22. Stony shale. 



23. Hard limestone 6 



24. Hardclay 1 3 



25. Limestone 3i 



26. Clay. Thin hard plates of 



stone lie in this clay 11 



27. Limestone, underlain by clay. 



(The clay frequently want- 



ing.) 0£ 



28. Limestone ; inconstant 6 



29. Clay. 



30. Hard grey limestone 



' Grizzle bed." Saurian bones, Fishes' 

 teeth and scales, Ammonites jdu- 

 norhis, Lima punctata, Cardium, 

 and Ostrea liassica; spines of Oidaris 

 and other Echinidce abundant. 



'Blue stone" or "Blocks." Myacitet 

 and elytra of Coleoptera. 



'• Grave-stone rock." Ichthyosaurus 

 and Otopteris acuminata, L. & H. 



Gummerals." Ostrea liassica. 



31. Clay 2 



32. 

 33. 

 34. 

 :;:.. 

 36. 



37. 



:ss. 



39. 



in. 

 41. 



42. 

 i:;. 

 n. 

 45. 

 16. 

 47. 

 K 



Limestone 3 



Clay 2 



Limestone 3 



Clay 2,' 



Hard dark limestone, 1 in. to 10 

 (This is the bottom bed of the 

 quarry. ) 



6 N "Fire-stone beds." Saurian remains 



and Cardium. 

 Modiola minima, Myacites, and Ostrea 



liassica. 

 In these limestones and clays onh 



small Ammonite has been found. 



Thick clay-bed ; yellowish 

 blue; breaking in angular 



fragments S 



Dark ferruginous clay, with 



conchoidal fracture 1 



<'lav _ ? 



Laminated clays 3 O 



Light-coloured sandstone ; 



micaceous o I 



Brown clay -' 



Sandstone; micaceous o 2 



Dark shah/ clay 8 



Sul'l sand-tonr I) I 



Black clay 3 



Ferruginous rein, sandy ? 



Grej Eeuper marls. 



"The Guinea-bed." Saurian bones, 

 Avietda longicostata, Stutch., Mn- 

 notis dectasata (?\ Limn punctata, 



Myacites, n. sp., Ostrea liassica, and 

 Hi inipidiiHi, sp., in numbers ; Coral. 



[Belonging to the zone of Avieula 

 contort a.'] 



Estheria-bed. Estheria minuta. 



" ( Hear blue blocks." 



PuUastra an 31 rickl 



PuHastra arenicola, StrickL 



The beds from No.37 fco KTo. 18 were found in ritu in an escarp- 

 ment at a short distance from the quarry at Binton. It mnsl !><■ 

 nnderatood thai the " Guinea-bed " is the lowest bed Been in titu in 

 the pit, :iinl thai No. 87 ooenpiee ite natural position relatively to thai 

 bed, although it is n«>t exposed in the Binton section. 



LUhology of the Ammonites planorbis beds. The Ant. /•/■'■■ 

 beds at Brockeridge (p. 392) consisl of dark Laminated shales, with 

 interstratified beds of marl and Limestone. The shales split into 



2 s 2 



