part 1] 



JURASSIC CHKOXOLOttY : LIAS. 



75 



Table V. — Middle Lias (Wessexian 7 to Eaasayan 

 Gloucestershire and Dorset Coast. 



Gloucestershire 

 (li. Kichardson). 1 



Bronni Clays of Isbourue. 



Toddington : Clays with Wiyncho- 

 nella tlicdia. 



No. 

 118. 



117. 

 116. 

 115. 



Dorset Coast (W. D. Lang). 2 

 Thickness. Fauna. 



Feet inches. 



Toddington : Layer with Cincta and 

 Omithella [Zeilleria]. 



Toddington : Nodules with Bhyn- 107 

 chonella rostellata. (Correlation 106 

 with Dorset uncertain.) 



Toddington : Bifericeras tubellum. 



99. 







114. 



3 







113. 



4 







112. 



2 







111. 



5 







At 3 feet up, Tlptonia bronni 

 group ; 77. cf. confusa 

 (Quenstedt). 



About first foot. Bhyn- 

 chonella thalia ! and Rh. 

 cf. thalia I rostellata 1 



Top. 77. bronni group. 



Zeilleria. 

 At 2 feet up, Uptonia- 



bronni group. 

 At 1 foot up, Platypleuro- 



ceras spp. var. 

 JPlatj/pleuroceras. 

 Cincta. 



Cincta, Zeilleria, Poly- 

 morjphites. 

 110. 27 6 Top. Polymorph itescf.mi.v- 

 tus. Fragments like 77. 

 jamesoni. 

 Lower part. Fragments, 

 Amm. indet. 



109. 



1 







108. 



4 







107. 







9 



106. 



1 







105. 



1 







104. 







4 



103. 







4 



102. 



2 



6 



101. 



o 







100. 



13 







Poli/morphites peregrinus. 



Phricodoceras, Deroceras. 

 Deroceras leckenbyi. 

 Microderoceras lorioli. 

 Crassicostate iSc'/j iocerata at 

 the base. 



At 7 feet and 10 feet up, 

 Echioceras cf. boreale. 



At 5 feet up, Bifericeras 

 tubellum. 



Lower foot. BJchioceras rho- 

 danicum. 



Crassicostate Fchioeerata. 



In regard to this Table (V), from the JBifericeras-iuhellum 

 horizon to the base of the bronni clays Dorset shows nearly 80 feet, 

 while presumably the Gloucestershire strata are packed away in 

 about a quarter of that thickness — they must lack a good deal, as 

 between Bifericeras tubellum and Uptonia bronni they disclose 



i XVIII, pp. 148-151. 



2 X, 1, pp. 306 et seqq. Also MS. notes and specimens kindly submitted by him. 



