Vol. 69.] BATHONIAN ROCKS O'F THE OXFOBD DISTRICT. 497 



Fig. 3. — Upper part of Gibraltar Quarry. 



I Forest 

 i Marble. 



v* N *#* 



■*IRF 



Fossiliferous 

 Cream • 

 Cheese 

 Bed (top 

 of the Great 

 Oolite). 



M. O. photo. 



Gkeat Oolite. Thickness in feet inches^ 



('Bed 1. Fossiliferous Cream-Cheese Bed. passing into an oolitic 



limestone at the northern end of the quarry. The 



following fossils have been obtained from this bed : — 



I Terebratula CE-piikyris) bathonica S. Buck., Nerineea 



eudesii Mor. & Lye, and Modiola imbricata Sow. ... 2 



Beds 2-4. Compact pure limestone, with a band of clay above 



and below 1 5- 



Beds 5 & 6. Marly fine-grained limestone, more marly at the 

 base, and yielding numerous fossils: such as Astarte 

 angulata Mor. & Lye, Cardium buclcmani Mor. & 

 Lye, Gervillia waltoni Lye, Modiola imbricata 

 Sow., Amberleya nodosa J. Buck., and Nerincsa 

 - eudesii Mor. & Lye 9 



Beds 7 & 8. Bluish-green clay, passing into a laminated brown 



clay 1 2: 



Bed 9. First Terebratula Bed : a marly bed crowded with T. 

 (Epithyris) bathonica S. Buck. The bryozoa Bere- 

 nicea diluviana Lamx., and B. archiaci Haime l are 

 often found encrusting the Terebratulce. This bed 

 rests upon the eroded surface of Block 2, upon which 

 there is often a band of oysters, as also Isastraa 

 limitata Lamx. and Thamnastrcea lyelli E. & H. ... 9' 



See Proe Geol. Assoc, vol. xxii (101 1) pi. 



