LOWER LIAS OF ROBIN HOOD'S BAY 109 



CALCAREOUS SHALE MEMBER 



Subzone of Asteroceras obtusion 



446.5 Shale, with occasional cone-in-cone enveloped grey calcareous mudstone nodules, especially in a band from 0. 10 m 



to 0.25 m below the top 0.56 



Epophioceras landrioti (d'Orbigny ) ( 1 ; CA 3276), Xipheroceras ziphus (Zieten) ( 1 ; C.49360), Cymbites laevigatas 

 (J. de C. Sowerby) (1; CA 3762), Promicroceras planicosta (J. Sowerby) (20; C.49343-59, C.49366-67). 



446.4 Harder, partially calcified shale 0.15 



Epophioceras sp. indet. ( 1 ; CA 3279), Xipheroceras cf. ziphus (Zieten) ( 1 ; C. 49337), Promicroceras planicosta 

 (J. Sowerby) (1;C49338). 



446.33 Shale, with widely scattered calcareous nodules 0.25 



Promicroceras planicosta (J. Sowerby) (7; C.49362-65, CA 3909-1 1 ). Asteroceras confusum Spath (3; CA 3012-14), 

 Xipheroceras dudressieri (d'Orbigny) ( 1 ; C.49336; PI. 5. fig. 2), Xipheroceras sp. indet. (2; C.49361, CA 3787). 



446.32 Large scattered calcareous nodules in a shale matrix 0.15 



Promicroceras capricornoides (Quenstedt) (4; C.49340-42, CA 3908), Asteroceras confusum Spath (2; CA 3010-1 1; 

 PL 1, fig. 4), Asteroceras obtusion (J. Sowerby) (1; CA 3015), Xipheroceras sp. indet. (1; CA 3786). 



446.31 Shale, finely laminated, with occasional strings and masses of pyrites 0.60 



Promicroceras capricornoides (Quenstedt) (7; C.49339, CA 3902-07), Asteroceras sp. indet. (1; CA 3035). 



Zone of Caenisites turneri 

 Subzone of Microderoceras birchi 



446.2 Cone-in-cone enveloped calcareous mudstone nodules 0.15 



446.1 Shale 0.30 



Promicroceras capricornoides (Quenstedt) (1; C. 49335). 



445 Hard calcified shale 0.13 



444 Calcareous mudstone nodules 0.06 



443.3 Shale, with a few calcareous mudstone nodules 1.37 



Promicroceras capricornoides (Quenstedt) (10; C. 49327-34). 



443.2 Hard calcified shale 0.25 



Promicroceras capricornoides (Quenstedt) (1; CA 3901). 



443.1 Grey calcareous mudstone nodules 0.05 



442.2 Hard partially calcified shale 0.48 



442.1 Grey crystalline shelly limestone, weathering yellow-brown; lenticular or nodular in some places 0.08 



441.3 Shale with occasional small calcareous mudstone nodules, especially at the middle of the bed 0.30 



441.2 Harder calcified shale and shaly limestone 0.15 



Microderoceras scoresbyi (Simpson) ( 1 ; C. 49327). 



441.1 Shale, with occasional calcareous mudstone nodules 0.41 



440 Grey shaly limestone, weathering yellow-brown 0.13 



439 Grey calcareous mudstone nodules 0.05 



438 Shale 0.15 



437 Harder partially calcified shale 0.10 



Promicroceras capricornoides (Quenstedt) (3; C. 49323-25). 

 436 Shale 0.61 



Promicroceras capricornoides (Quenstedt) ( 13; C.493 15-22, CA 3896-3900), Arnioceras sp. indet. ( 1 ; CA 2938). 

 435 Hard calcified shale and shaly limestone 0.15 



Caenisites cf. turneri (J. de C. Sowerby) (2; CA 321 1-12), ICaenisites sp. indet. (4; CA 3213-16), ^.Arnioceras sp. indet. 



(2; CA 2937). 

 434 Grey calcareous mudstone nodules 0.06 



433.3 Shale, with impersistent calcified patches and thin shaly limestones 0.91 



Microderoceras birchi (J. Sowerby) (5; C.493 14, CA 3976-79; PI. 5, fig. 7), Caenisites turneri (J. de C. Sowerby) 



(24; CA 3187-3210; PI. 2, figs 3, 5), Caenisites brooki (J. Sowerby) (4; CA 3183-86). 



Subzone of Caenisites brooki 



433.2 Harder calified shale, with limestone lenses 0.1 1 



433.1 Shale, with occasional small calcareous mudstone nodules and cone-in-cone structures 0.15 



432 Grey shaly limestone, weathering yellow-brown, nodular in the lower half, and shelly in places 0.10 



431.3 Shale, with some thin lenses and patches of shelly limestone, especially in the upper part 0.86 



Caenisites brooki (J. Sowerby) (2; CA 3181-82), Arnioceras sp. indet. (1; lost). 



431.2 Hard, grey, shelly limestone, nodular in the lower half; some masses of pyrites 0.08 



Caenisites cf. brooki (J. Sowerby) (5; CA 3179-80, 3 lost). 



