490 PEOF. E. J. GARWOOD OX THE LOWER CARBOKIFEEOUS [DeC. I912, 



were derived from the quartz-veins which traverse the Lower 

 Pakeozoic rocks in the neighbourhood of Erownber Pike in the 

 Cross-Eell Inlier. 



The Spirifer-furcatus Band forms a thin bed, with a struc- 

 ture resembling oatmeal ; it crops out in Docker Beck about 

 20 yards above the ujDper waterfall, and just below the ford. The 

 matrix is somewhat oolitic, and the shells are replaced by crystal- 

 line calcite. This 'oatmeal bed' may be correlated with the 

 S^nrifer-furcatus Band of Meathop in the Arnside District/ 



The Michelinia Zone enters in Docker Beck near the base 

 of the Orton Sandstone Series, about 1 2 feet above the Sjy.-furcatas 

 Baud and about 160 yards up-stream from the upper waterfall. 

 It is represented by a band of oolitic limestone about a foot thick, 

 crowded with the shells of Camaroplioria isorliyndia. The oolitic 

 coatings have in many cases been deposited round rolled quartz- 

 grains, and the fossils are also rolled and somewhat fragmentary, 

 pointing to a continuation of shallow-water conditions and current- 

 action throughout this period. 



Fauna. 



Cyatliophyllum multilamellatura 



M'Coy. Abundant. 

 Michelinia grandis M'Coy. 



Athi/ris glabristria (PbilL). 

 Camarojplioria isorhynclia (M'Coy). 



Abundant. 

 Derhyoj sp. 

 Froductus cf. corriLgato-hemi&phericus 



Vaugban. 



Eeticidaria linecda (Mart.). 

 Seminula cf. amhigua (Sby.). 

 Syringothyris cuspidata (Mart.). 

 Rare. 



BelleropJion cost at us Sby. 

 Straparollus sp. 



Polyrhizodiis sp. 



As previously mentioned,-^ the rich fauna of the Miclielinla 

 Zone of the Western Districts is almost unrepresented in the Shap 

 and Pennine Districts. The occurrence of a large example of 

 Michelinia grandis^ associated with Camarophoria isorhynclia, in 

 this section shows that the lower portion of the Michelinia Zone 

 is represented here, and that the upper portion of the zone must 

 therefore be merged in the overlying Orton Sandstone. !No fossili- 

 ferons exposures of the Miclieliuia Zone are observed south of 

 Docker Beck until we reach Kavenstonedale Moor, where small 

 outcrops of this zone occur in tsvo potholes immediately above the 

 (quarries opened in the Browuber Pebble-Bed. 



Procluctus corrugato-hemisphericus Zone : The Gastro- 

 pod Beds. — The exposures of the Orton Sandstone in Docker 

 Beck below AVater's Farm call for no special comment, and they 

 yield no fossils beyond obscure casts of lamellibranchs and plant- 

 remains ; a thin layer of pebbles, however, recalling the Brownber 



1 See Geol. Mag. dec. 5, vol. rii (1910) p. 118. 

 - Ibid. dec. 5, vol. iv (1907) p. 70. 



