276 



PEOFS. LLOYD MOEGAN AND REYNOLDS ON THE [Aug. IQOI, 



The fossils from this quarry, as identified by Mr. Reed, are : — 



Coelospira hemi$ph(srica, Sow. 

 Bhynchonella oiucula, Sow, 

 Or/ his eleganttda (?) Dahn. 

 Airypa reticularis, , Linn. 

 Chooietes siriatella, Dalm. 



Stropheodonta compres&a, Sow. 



Phacops Weaveri, Salt. 



Cheirurus sp. 



Favosites Forhesi, M.-Edw. 



Crinoid-remains. 



Farther up the road leading southward from Damery Bridge, 

 about 125 feet of Upper Llandovery Beds, consisting of grey shales 

 and sandstones, with occasional fossiliferous calcareous bands, are 

 seen in the banks. These lie between the upper and lower trap- 

 horizons, and contain the following assemblage of fossils : — 



F/iacojJs Weaveri (?) Salt. 

 Vh. DowningifB (1) Murch. 

 Fncrinurus punctatiis, Eriinn. 

 Calymene Bhimenhachi, Brongn. 

 Orthis hyhrida (?) Sow. 

 0. calligramma, I) aim. 

 Sfricklandima lens, Sow. 

 Sir. liraia. Sow. 



Fentamerusundatus (?) Sow. 

 Coelospira hemisphcerica, Sow. 

 Atrypa sp. 

 Plectamhonites sp. 

 Meristella sp. * 



Lindstroemia uniserialis, M'Coy. 

 Cormilites serpulmnus, Schloth. 

 Crinoid-remains. 



From Damery Quarry the trap-band may be traced in a slightly 

 sinuous line through Mickle Wood. It has been worked in a 

 series of long-disused and thickly-overgrown quarries. The trap 

 is generally much weathered and shattered, vesicular fragments 

 being found on the quarry-floor. But to the north, near two small 

 ponds (south-west of the ' M ' of Mickle Wood, on the 6-inch 

 Ordnance Map), the trap is more compact, and in its micro- 

 scopical characters is identical with the Damery rock. On the 

 western side of the quarries here the sedimentary beds may be 

 found by removing the surface-soil. Their strike is parallel with 

 the trend of the trap-band ; but we have not succeeded in obtaining 

 a junction-section showing the exact relations of the sedimentary 

 beds to the trap. 



In Sanders's map and that of the Geological Survey two main 

 bands are represented as crossing through Mickle Wood. W^e 

 have been unable, after careful search, to find any evidence of 

 the more easterly band. In several places recent trenches have 

 been cut, for drainage purposes, just where the band is marked. 

 But they show light- coloured, iinfossiliferous, shaly material, the 

 beds in situ not being reached in the trenches. 



Apart from the main course of the trap through the wood, the 

 only other indications of igneous rock that we have detected are 

 on the steep slopes above the road, where it closely adjoins the 

 stream near the old disused iron-mill. Here the ground is strewn 

 with blocks of trap. If, however, the trap has the same dip as the 

 sedimentary series, the slope of the surface is such that the igneous 

 rock would reappear, as indicated in fig. 2, on the opposite page. 



A little farther north-west than the line of this sketch- section a 

 band of limestone crosses the road, at a point due north of Crockley's 



