Maryland Geological Survey 185 



About a mile to a mile and a half south of Ridgely on the road east of 

 Knobly Mountain, the road-bed dips below three or four layers of the 

 uppermost beds and at some places exposes upwards of 10 feet of soft, dark 

 yellow sandstone. At the base on the right side of the road is a trilobite 

 bed where numerous fine but friable specimens of Dalmanites muUi- 

 annulatus have been gathered. Still farther south along the road the 

 Oriskany-Romney contact and several feet of black shales are seen. The 

 following fossils were obtained in the Oriskany at this place : Sptrifer 

 murchisoni (r), Cyrtina rostrata (r), Orbiculoidea ampla (rr), and Dal- 

 manites muUiannuhtiis (aa). 



V. Section on Williams Road East of Cumberland 

 About 3| miles east of Cumberland on the Williams Road an excellent 

 section of the Devonian is exposed embracing the strata from the Oriskany 

 to the Parkhead member of the Jennings formation. The fossils are not 

 abundant in the Oriskany and the species were all collected from the 

 upper 16 feet. The rock is a coarse gray sandstone sometimes gritty and 

 sometimes calcareous. The contact between the Oriskany and the Romney 

 is here splendidly shown, much better than at Monster Rock and quite as 

 well as at the iron bridge over Licking Creek below Warren Point, Penn- 

 sylvania. The section of the Oriskany of this place is as follows : ' 



Romney Formation 



Vertical Total 



Onondaga Member *^'fe''et''^%Wckneis 



Black shales broken into very thin pieces. 



Oriskany Formation 

 Ridgely Sandstone Member 



Coarse sandstone sometimes gritty and sometimes calcareous 

 containing Spirifer arcnosus (r), S. tribulis (c). Metaplasia 

 pyxidata (a), Cyrtina rostrata (r), Anoplotheca flabellites (r), 

 Meristella lata (r), Rensseiwria marylandica (r), Beachia sues- 

 Sana (v) , Plethorhyncha spcciosa (r), Chonetes hudsonicus (r), 

 Anoplia nucleata (r), RhipidomeUa musculosa (r), R. mary- 

 landica (r), Dalmanella planiconvexa (aa), Schuchertella be- 

 craftensis. Diaphorostoma ventricosum (rr), Cyrtolites expan- 

 sus (rr) 40.0 40.0 



Concealed. 



' Measured by R. B. Rowe. 



