Maryland Geological Survey 461 



iM^ til 



Road S. 83° E. ill 



,2 S 



^ « s 



c3 o ° ■" a E 



Concealed 1480 IG G88 



Ravine 1450 



About 300 feet northeast of the road, on the strike of 

 the rock, there were found in the shale behind a barn the fol- 

 lowing fossils: Cladochonus humilis, Atrypa reticularis 

 common, Productella speciosa abundant, Pugnax pugnns 

 var. alius, Schizophoria striatula abundant, Reticularia 

 Iwvis abundant, Spirifer mucronatus var. posterus, Strophe- 

 odonta demissa. The vertical altitude at which these forms 

 occur is approximately 690 feet. 



Concealed. Minor folding probably occurs in this 

 interval 1450 351 672 



BEDS CONTAININ'G NAPLES FAUNA 



Largely concealed. In part olive-green shales and inter- 

 bedded flaggy sandstone. Beds vary arenaceous at top. N. 



7° E. 37° E 480 106 321 



Ravine 300 



Concealed 300 19 215 



Olive-green fissile shale with interbedded flaggy sand- 

 stone 270 26 196 



Same as above containing at the top Buchiola speciosa 



fauna. N. 8° E. 40° E 230 64 170 



Same as above containing Buchiola speciosa fauna. N. 



16° E. 55° E 130 74 106 



Concealed 40 32 32 



Romney- Jennings contact 



RojiNEY Formation 

 Very massive sandstone. 



Though not well exposed, this is one of the first sections of the lower 

 Jennings that was carefully studied in Maryland. The Camarotoechia 

 congregata var. parkheadensis bed, forming the base of the Parkhead 

 member, is selected as a datum plane and placed 1600 feet above the base 

 of the Jennings, this being approximately the position at which the same 

 bed occurs at Berkeley Springs, West Virginia. Among the most con- 

 spicuous features of the section is the Cladocliomis-Beticalaria Icevis zone, 

 which occurs near the base of the beds containing the Ithaca fauna (690 



