100 M.K. HOWARTH 



571 Shale, with many scattered oval sideritic mudstone nodules up to 0.15m thick 0.81 



Liparoceras (L.) heptangulare (Young & Bird) (1; C.39137), Lytoceras fimbriatum (J. Sowerby) (1; CA 211 A). 



Subzone of Tropidoceras masseanum 



570 Shale, with occasional sideritic mudstone nodules that contain gastropods and poorly preserved Crustacea 1.73 



Lytoceras fimbriatum (J. Sowerby) (3; CA 2771-73). 

 569 Continuous bed of sideritic mudstone; outcrops in a gully on the scars, and forms a conspicuous datum line 



in the cliff 0.08 



Tragophylloceras loscombi (J. Sowerby) (2; CA 2761-62). 

 568 Shale, in 7 or 8 pale and dark bands 1.68 



Lytoceras sp. indet. near top of bed ( 1 ; lost): Tropidoceras futtereri Spath near base of bed ( 1 ; CA 4545; PI. 7, fig. 1 1 ); 



Tropidoceras masseanum (d'Orbigny) var. rotundum (Futterer) at boundary of beds 567 and 568 (11; CA 4546-55). 



567 Shale, hard and silty; forms a slight feature on the scar 0.15 



566 Shale 0.28 



Liparoceras (L.) sp. indet. ( 1 ; lost). 



565 Shale, hard and silty; forms a slight feature on the scar 0.08 



564 Shale, with harder silty bands at the base and the middle; the higher silty band contains occasional sideritic 



mudstone nodules 0.56 



Liparoceras (L.) sp. indet. ( 1 ; lost). 



563 Sideritic mudstone nodules; contains large logs of fossil wood 0.08 



562 Shale, with occasional sideritic mudstone nodules 0.69 



Tropidoceras sp. indet. (3; CA 4556-58), Liparoceras (L.) cheltiense (Murchison) (2; C. 39138-39). 

 561 Flat sideritic mudstone nodules 0.08 



Tropidoceras sp. indet. or lUptonia cf.jamesoni (J. de C. Sowerby) (2, lost). 

 560.3 Shale, with shelly layers (top 0.08 m only) 0.08 



Tropidoceras futtereri Spath (1; CA 4544; PI. 7, fig. 10). 



Zone of Uptonia jamesoni 

 Subzone of Uptonia jamesoni 



560.3 Shale, with shelly layers (all below the top 0.08 m) 1.32 



Tragophylloceras sp. indet. (1; CA 2770), Polymorphites bronni (Roemer) (7; CA 4224-30; PL 7, fig. 5). Uptonia lata 

 (Quenstedt) (1; CA 4538) and Uptonia cf.jamesoni (J. de C. Sowerby) ( 1 ; CA 4532). 



560.2 Flat sideritic mudstone nodules: together with bed 559. forms a distinctive pair of nodule beds on the scar 0.08 



Uptonia jamesoni (J. de C. Sowerby) (1; CA 4531), Polymorphites bronni (Roemer) (2; CA 4222-23). 



560.1 Shale 0.15 



Polymorphites bronni (Roemer) ( 1 ; C A 422 1 ). 



559 Flat sideritic mudstone nodules 0.08 



Uptonia jamesoni (J. de C. Sowerby) (1; CA 4530), Uptonia sp. indet. (1; C A 4543), Polymorphites bronni (Roemer) 



(1;CA4220). 

 558 Shale, with occasional sideritic mudstone nodules at about the middle of the bed 0.66 



Uptonia lata (Quenstedt) (5; CA 4533-37), Uptonia sp. indet. (4; CA 4539-42), Polymorphites bronni (Roemer) 



( 16; CA 4204-19), Tragophylloceras sp. indet. ( 1; CA 2769). 

 557 Flat sideritic mudstone nodules; conspicuous in the cliff 0.13 



Uptonia cf.jamesoni (J. de C. Sowerby) ( 1 ; CA 4529). 



556.3 Shale 0.41 



Uptonia jamesoni (J. de C. Sowerby) (1; CA 4528). 



556.2 Small spherical, grey, calcareous mudstone nodules, with a few larger flat sideritic mudstone nodules 0.08 



Uptonia jamesoni (J. de C. Sowerby) (5; CA 4523-27), Polymorphites bronni (Roemer) (3; CA 4201-03). 



556.1 Shale ■ 0.71 



Polymorphites bronni (Roemer) (5; CA 4196-4200). 

 555 Grey calcareous mudstone nodules mixed with larger sideritic mudstone nodules 0.10 



Uptonia jamesoni (J. de C. Sowerby) (1; CA 4522), Polymorphites polymorphus (Quenstedt) (2; CA 4316-17; PI. 7, 



fig. 3). 

 554 Shale 0.76 



Uptonia jamesoni (J. de C. Sowerby) (2; CA 4520-21), Polymorphites bronni (Roemer) ( 1 ; CA 4195), Parinodiceras 



parinodum (Quenstedt) ( 1 ; C. 39142). 

 553 Flat sideritic mudstone nodules mixed with a few smaller grey calcareous mudstone nodules 0.13 



Tragophylloceras sp. indet. (1; CA 2768). 



552 Shale...! 0.33 



551 Scattered sideritic mudstone nodules, mixed with smaller grey calcareous mudstone nodules, in shale 0.08 



