LOWER LIAS OF ROBIN HOOD'S BAY 107 



Subzone of Oxynoticeras simpsoni 



471 Shale, with occasional calcareous mudstone 'cheese' doggers and masses of pyrites; 0.91 m near Miller's Nab 0.86 



470 Calcareous mudstone nodules enveloped in cone-in-cone structures, some 'cheese' doggers and a few strings of pyrites .. 0.08 



Gagaticeras exortum (Simpson) ( 1; CA 3297), Gagaticeras neglectum (Simpson) (35; CA 3348-64), Oxynoticeras 

 simpsoni (Simpson) (2; CA 3711-12). 



469 Shale, with scattered calcareous mudstone 'cheese' doggers 1.83 



468 Shale, with many calcareous mudstone nodules about 0.08 m thick enveloped in cone-in-cone structures, and thin 



lenticles of shelly limestone 0.13 



Gagaticeras exortum (Simpson) (5; CA 3292-96; PI. 2, fig. 7), Gagaticeras finitimum Blake (3; CA 3306-08), 

 Gagaticeras neglectum (Simpson) (28; CA 3325-47; PL 2, fig. 6), Gagaticeras sp. indet. (10; CA 3372-80), Oxynoticeras 

 simpsoni (Simpson) (22; CA 3689-3710; PL 4, fig. 5), Cenoceras striatus (J. Sowerby) (1; CN 93). 



467 Calcified shale 0.10 



Oxynoticeras simpsoni (Simpson) (29; CA 3660-88), Gagaticeras exortum (Simpson) (9; CA 3283-91), Gagaticeras 

 finitimum Blake (8; CA 3298-3305), Gagaticeras gagateum (Young & Bird) (2; CA 3309-10), Gagaticeras neglectum 

 (Simpson) ( 14; CA 331 1-24). Gagaticeras sp. indet. (7; CA 3365-71), Palaeoechioceras sp. indet. (3; CA 3280-82). 



466 Shale, with two thin partially calcified bands; 0.48 m thick between Peter White Cliff and Miller's Nab 0.57 



Oxynoticeras cf. simpsoni (Simpson) (2; CA 3658-59). 



465 Hard sandy and micaceous calcified shale 0.08 



Oxynoticeras cf. simpsoni (Simpson) (2; CA 3656-57). 



464.33 Shale, with indurated patches and scattered 'cheese' doggers of lenticular limestone up to 0.2 m thick and up to 



2.5 m diameter 0.39 



Oxynoticeras simpsoni (Simpson) ( 1 ; CA 3655), Oxynoticeras sp. indet. ( 1 ; CA 3717), Angulaticeras sp. indet. 

 (1; CA 2800), Cymbites sp. indet. (1; CA 3783). 



464.32 Band of irregularly-shaped limestone nodules in a shale matrix 0.35 



Oxynoticeras simpsoni (Simpson) (3; CA 3652-54; PL 4, fig. 8), Eparietites impendens (Young & Bird) 

 ( 14; CA 3262-75), Cymbites sp. indet. ( 1 ; CA 3782), Cenoceras striatus (J. Sowerby) ( 1 ; CN 86). 



464.31 Shale 0.10 



Eparietites impendens (Young & Bird) (2; CA 3260-61). 



464.2 Harder calcified shale 0.06 



464.1 Shale, with scattered calcareous mudstone nodules 1.12 



Eparietites impendens (Young & Bird) (13; CA 3248-59), Cymbites laevigatus (J. de C. Sowerby) (1; CA 3776), 

 Angulaticeras sp. indet. (1; CA 2799). 



463 Calcareous mudstone nodules; many Cardinia 0.05 



Oxynoticeras simpsoni (Simpson) (2; CA 3650-51 ), Eparietites impendens (Young & Bird) (3; CA 3245-47). 



Zone of Asteroceras obtusum 

 Subzone of Eparietites denotatus 



462 Shale, with occasional sideritic mudstone 'cheese' doggers; 0.91 m thick between Peter White Cliff and Miller's Nab 0.97 



Eparietites impendens (Young & Bird) (16; CA 3229-44; PL 4, fig. 1 ), Cymbites laevigatus (J. de C. Sowerby) 

 (7; CA 3769-75), Angulaticeras sp. indet. (2; CA 2797-98). 'Tinkler's Stone' is a boulder of very hard grey-brown 

 massive limestone, not derived from the Lower Lias, resting on bed 462 about 150 m north of the mouth of Stoupe 

 Beck; it measures 1.8 m x 1.3 m x 0.85 m high and weighs about 6000 kg. 



461 Partly calcified shale 0.05 



Eparietites impendens (Young & Bird) (3; CA 3226-28; PL 1, fig. 6), Angulaticeras sp. indet. (1; CA 2796). 



460 Shale 0.29 



Eparietites cf. impendens (Young & Bird) (2; CA 3224-25). 



459 Partly calcified shale, with occasional calcareous mudstone nodules in the lower part 0.10 



Eparietites impendens (Young & Bird) (2; CA 3222-23). 



458.3 Shale 0.18 



Aegasteroceras crassum Spath (2; CA 305 1-52), Aegasteroceras sp. indet. (2; CA 3177-78), Eparietites impendens 



(Young & Bird) ( 1 ; CA 322 1 ), Cymbites sp. indet. ( 1 ; CA 378 1 ). 



458.2 Partly calcified shale 0.23 



Aegasteroceras crassum Spath (4; CA 3047-50; PL 2, fig. 4), Aegasteroceras sp. indet. (1; CA 3176). 



458.1 Shale; with occasional calcareous mudstone nodules 0.20 



Aegerlaevis (Blake) (Decapod crustacean; Withers, 1933); Aegasteroceras sagittarium (Blake) (4; CA 3172-75). 

 457 Calcified shale 0.08 



Aegasteroceras sagittarium (Blake) (4; CA 3168-71), Eparietites impendens (Young & Bird) (1; CA 3220). 

 456 Shale, with scattered small calcareous mudstone nodules in the lower half 0.66 



Aegasteroceras crassum Spath (1; CA 3046), Aegasteroceras sagittarium (Blake) (60; CA 3108-67; PL 1, fig. 7), 



Cymbites sp. indet. (2; CA 3779-80). 



