s 
68 Professor G. Delépine—Faunal Succession— 
sketch-map), but near Ystradowen the beds turn over locally and dip 
S.8.E. (see the new 1 inch map, Geological Survey, Sheet 262). 
—) 
SR 
| Llanharry. 
ae 
7? 
Sketch-map of the Carboniferous Limestone exposures near Llantrisant Station. 
I. Exposures Kast of Llantrisant Station, North of the Great Western Line. 
(1) About half a mile east of Miskin church (sketch-map, letter a) 
there are several small and scattered exposures which exhibit a thin- 
bedded dark-grey encrinital limestone. From these beds I obtained 
the following Brachiopods :— 
Productus burlingtonensis. Syringothyris cf. typa, Weischell. 
Chonetes cf. hardrensis. Reticularia cf. lineata. 
Orthotetid. Athyris ct. glabristria. 
Rhipidomella Michelini. Rhynchonellid. 
Spirifer clathratus. 
Bryozoa, especially Fenestellids, are very abundant. 
(2) About 200 yards north of exposure a, in an old quarry (exposure 
6) near the school, black and dark-blue encrinital limestone occurs at 
the bottom and dolomite with crinoids above. 
The limestone yiclded— 
CoraLs, 
Zaphrentis sp. 
Caninia cornucopia. 
BracHIoPops. 
Productus burlingtonensis. 
P. cf. pustulosus. 
Chonetes cf. hardrensis. 
Spirifer clathratus. 
Syringothyris laminosa. 
