tHK American Geologist, Vol. XXX. 
fLATE^VIIl. 
Fig 1 Cladoselache fyleri, showing fossilized muscle bands. The mar- 
gin of the trunk passes vertically through the middle of the figure; part of a 
pectoral fin appears at the right, its hinder rim made more prominent by a 
row of black dots. Nearly natural size. 
Fig. 2. Cladoselache fyleii. Section of muscle band photographed 
under a low power, showing outlines of fibres. 
