460 The Upper Devonian Deposits of Maryland 





Woodmont Shale Member c-i^wo S -a-S^ 



SJ.-H 



BEDS CONTAINING ITHACA FAUNA g c g g-| 3 5^| 



Dark-red argillaceous sandstone, several thin beds of yel- 

 lowish-green shale. Yellow sandstone interbedded in upper 

 15 feet. N. 5° E. 30° E. Lingula ligea was found loose on 



road, probably from this unit 3075 35 1599 



Argillaceous yellow shale breaking very irregularly and 



weathering yellowish-brown. N. 25° E. 30° E 3000 30 1564 



Axis of minor anticline 2920 1525 



Same as preceding beds 2920 4 1525 



Yellow and red sandstone and shales 2910 60 



Concealed in part. Fragments of dark-yellow conglom- 

 eratic sandstone, same as at 3077 horizontally, loose on hill- 

 side 2770 50 



Loose fragments of conglomeratic sandstone, same as at 

 3077 horizontally, containing Camarotwchia congregata var. 



parArTieadensis in abundance. N. 15° E. 40° E 26S0 1600 



Reddish-brown fine-grained sandstone and yellow shale.. 2680 50 1600 



Concealed 2590 276 1550 



Coarse arenaceous shale. At the top of this unit back 

 of the third of four similar houses occur Liorhynchus gloh- 

 uliforme. Spirifer mucronatus var. posterus abundant. Be- 

 tween 2020 and 2180 were found Cyrtina haviiltonensis 

 common, Lingula spatulata, L. ligea, Liorhynchus glohuli- 

 forme abundant, Productella speciosa. Spirifer mesastrialis, 

 S. mucronatus var. posterus abundant, Nucula corbuli- 

 formis, Palceoneilo brevis 2180 43 1274 



Road N. 85° E. 



Coarse arenaceous shale, second of four similar houses 

 opposite top of unit. N. 15° E. 60° E. At top was found 

 Productella speciosa. Spirifer mucronatus var. posterus 

 abundant 2120 82 1231 



Coarse arenaceous shale breaking irregularly. At top 

 of this unit, behind the first of four similar houses, occur 

 Productella speciosa and Spirifer mucronatus var. posterus 

 abundant 2020 155 1149 



Yellow arenaceous shale containing at top Cladochonus 

 humilis, Productella speciosa, Pugnax pugnus var. alius ?, 

 Spirifer mucronatus var. posterus ? N. 9° E. 70° E 1850 59 994 



Yellow argillaceous shale. At top occur Reticularia Iwvis 

 ?, Spirifer mucronatus var. posterus. N. 7° E. 56° E 1785 166 935 



Axis small anticline. No deduction made for folding. . . 1580 



Light-colored argillaceous shale, weathering to a reddish- 

 brown tone, some chocolate-colored shale 1580 81 769 



