Maryland Geological Survey 



457 



•0-62 

 PI 



< CO 



744 



•o*" ^ ^ o c 



Fissile green shale 1005 32 



Fissile olive-green shale and thin beds of green sand- 

 stone, N. 5° E. 45° E. Containing the following fossils at 

 top of unit: Atrypa reticularis abundant, Lingula spatulata, 

 Liorhynchus globuUforme common, Reticularia Iwvis abun- 

 dant, Spirifer mucronatus var. posterus, Stropheodonta 

 demissa common 960 89 



BEDS CO.NTAIMXG NAPLES FAUNA 



Road N. 85° W. 



Concealed 840 43 



Ravine 790 



Concealed 790 48.5 590 



Largely concealed. The bank along the road indicates 

 strata possessing the same general character as the fol- 

 lowing unit, save that sandstone beds are more numerous. 

 Dip 45° E. New house on the north side of road 720 243 



ri2 



623 



532 



Road N. 80° W. 



Fissile olive-green shale interbedded with thin layers of 

 flaggy sandstone, bearing crinoid segments at top. N. 20° 



E. 45° E 370 126 289 



Fissile olive-green shale. N. 23° E. 50° 220 74.3 163 



Largely concealed. N. 23° E. 50° E 120 88.5 88 



Romney-Jennings contact 



RoMNEY Formation 



Massive sandstone. 



The occurrence of a zone of Reticularia Iwvis in the lower part of the 

 Ithaca fauna is of special interest hecause of the restricted range of that 

 species in New York, while tlie overlying Liorhynchus glohuliforme zone 

 is well developed. The conglomerate containing Camarotoechia congregata 

 var. parkheadeiisis, which forms the base of the Parkhead, is found in 

 numerous fragments on the hillside and is underlain by the conspicuous 

 red band that frequently occurs in this position in eastern Maryland. 



