174 The Lower Devonian Deposits of Maeyland 



Vertical Total 

 thickness vertical 

 feet thickness 

 Dalmanella perelegans, 5.9; Rhipidomella sp., Schuchertella 

 woolworthana, 4.9; Uncinulus sp., 3.9; Cyrtoceras n. sp., Nucleo- 

 spira ventricosa, Spirifer cyclopterus, Stropheodonta coey- 

 manensis, Stropheodonta arata, and Uncinulus sp., 1.9 feet. 

 Lepadocrinus stems abundant 6.0 6.0 



Thickness of Coeymans member 8.6 



Keyser Mem'ber 



VII. Sections at Corriganville 



Two additional sections are exposed at Corriganville. One of these is 

 on the south side of the creek opposite the Devil's Backbone in an 

 abandoned quarry from which the rock has been taken out for a distance 

 of 100 or 200 feet back from the hill-slope. The lower part of the New 

 Scotland member, the Coeymans, and a part of the Keyser member have 

 been worked. On the western face of the quarry and on many of the slabs 

 which have fallen down are splendid exposures, showing hundreds of 

 specimens of Spirifer macrophurus. They are imbedded in the white 

 chert which weathers in such a way that the internal structure of the 

 fossils is finely shown. They cannot be taken from the chert, however, 

 without destroying them since they have all been more or less silicified. 



The following fossils were obtained by R. B. Eowe at this place: 

 Spirifer macrophurus (aa), S. perlamellosus (a), Trematospira muUi- 

 sti-iata (r), T. deweyi (rr), T. equistriata (r), Anoplotheca concava (aa), 

 Meristella arcuata (r), Nucleospira ventncosa (r), Leptcena rhomhoidalis 

 (a), Strophonella punchilifera (rr), S. headleyana (rr), Schuchertella 

 woolworthana (r), Dalmanella planocoiivexa (r), D. perelegans (r), D. 

 emarginata (t) , Rhipodornella ohlnta (r), Orthostrophia strophomenoides 

 (rr), Schizophoria muUistriata (c), Eaionia medialis (r), E. singalaris 

 (r), Camarotosohia altiplicaia (rr), Uncinulus vellicatus (r), U. glohosus 

 (rr), RhynchoneUa Malveata. 



An excellent and uninterrupted exposure of the rocks of the Lower 

 Oriskany, New Scotland, Coeymans, and the larger part of the Keyser is 

 seen in the deep cut of the Pittsburg branch of the Western Maryland 

 Railroad through the hill south of the quarry. The beds of the Keyser 



