ESTHERIA MINUTA. 



69 



" Section of the Jvicula-contorta-beds at Garden Cliff, near Westbury-on-Severn. 

 (The beds are described in descending order.) 



No. Lithology. ft. in. Okganic Remains. 



1. The Ostrea-bed ; a hard, dark-grey, Ostrea liasica, Strickl., Modiola minima, Sow., 



argillaceous Lias limestone ; many Cardium, n. sp. 



shells on the surface 4 (This bed is one of the lowest of the Ammonites- 



planorbis-series.) 



2. Greyish clay from 1 ft. to 2 



3. The Monotis-bed ; a cream-coloured, The Monotis-bed contains Monotis decussata, Goldf., 



argillaceous fissile limestone (the in great profusion in the upper laminae ; and in 



"Insect-limestone" of Brodie) the lower, Myacites musculoides, Schl. (?), Car- 



from 4 in. to 8 dium Rhceticum, Mer., Modiola minima, Sow., 



Monotis decussata, and Ostrea liassica. 



4. Greyish shaly clay from 1 ft. to 2 



5. The Estheria-bcd ; alight-grey nodular The Estheria-bed contains in some part nests of 



limestone, in parts shelly ; forming Estheria minuta, Bronn. In the shelly por- 



a prominent band in the cliff 1 tions I have found Pecten Valoniensis, Defr. 



(Brodie mentions also the occurrence ofCypridce, 

 Plants {Naiades), and scales of Fishes in this 

 bed.) 



6. Dark friable shale; containing many Many small compressed Conchifera, which have not 



fossiliferous seams 8 ft. to 10 been determined. 



7. Dark sbaly clay ; containing many Pullastra. 



compressed shells ; 1 



8. Dark shale; containing many seams 



of compressed shells 4 



9. The Pecten-bed ; a dark argillaceous Pecten Valoniensis, Defr., numerous and com- 



limestone 2 pressed. 



10. Black shales 6 Fossils rare ; bodies resembling Coprolites. 



11. The Bone-bed ; a thin band of greyish Bones of Saurians and Fishes, teeth of Reptiles, 



calcareo-siliceous rock ; containing teeth of Fishes, as Saurichthys, Acrodus, Hy- 



osseous debris and much pyrites. bodus, and Ceratodus, with many Coprolites. 



A true bone-breccia 1 



12. Black shales ." 2 



13. Dark-grey micaceous sandstone ; ripple- Acicula contorta, Portl., Cardium Rhceticum, and 



marked on the upper surface ; form- Pullastra arenicola, Strickl. 



ing a prominent bed in the cliff; 



large slabs lie on the shore ...9 in. to 1 



14. Black shale 2 



15. A band of grit resembling No. 13 ; con- Bones, scales, and teeth of Fishes; Pullastra 



taiuing scales and teeth and much arenicola. 



pyrites 4 



16. Hard black shale 2 Bodies resembling Coprolites. 



Grey marls of the Keuper. 



" The beds are all conformable, and dip to the S.E. at angles varying from 2° to 4°. 

 The Keuper Marls are exposed to the Cliff, with a thickness of above eighty feet. When 



