Pah'outoloi^y of Ihc Ciucinnali Croup. 47 



Described as cylindrical or semi-cylindrical stems with fine 

 hair-like markings upon the rounded, upper surface ; the lines 

 diagonal or longitudinal, and more or less irregular. Probably 

 the cast of a depression made in the mud by running water. 



MARKINGS Ol' ORGANISMS. 



Dystactophycus inamniillaniini, Miller & Dyer. (See under 



CfKl.KNTERATA.) 



Hcliopliycus stel/i/ornic, Miller & Dyer. (vSee under As- 



TERIDEA. 



For the following, see under Annelida. 



Arthraria antiqu.\ta. Killings. Syn. A. biclavata. Miller. 



Blastophycus diadematus. Miller & Dyer, as Planolites 

 DIADEMATUM, M. & D. (sp.). vSyu. Triclwphycus lanosus, M. 

 & D., Saccopliyciis intoi tus, U. P. James. 



Bidhotrephis raniidosa. Miller as Planolites raimulosus 

 Miller (sp.). 



B. succulefis Hall as Planolites succulens Hall (sp. ) 

 Bidhotrephis gracilis, var. crassa, Hall, as Planolites 



CRASSA, Hall (sp.). 



Licrophycus flabelliim, Miller & Dyer as Planolites (?) 

 FLABELLUM, M. & D. (sp.). 



PalcBophycus radiata, Orton as Planolites radiatus, 

 Orton (sp.). S^'n. Dactylophycus qiiadripartitum , M. & D., and 

 D. tridigitatum, M. & D. 



P. rugosum, Hall as Planolites rugosa. Hall (sp.). 



P. Uibulare, Hall as Planolites tubularis, Hall (.sp.). 

 Syn. P. simplex, Hall. 



P. virgahim, Hall, as Planolites virgatum, Hall (sp.). 



Rusophyciis aspcrum. Miller, as Planolites asperum, 

 Miller (sp.). 



R. siibatigiilatum, Hall, as Planolites subangulatum, 

 Hall (sp.). Sj'n. R. clavatiim, Hall. 



ScoLiTHUs DELiCATULUS, U. P. James. 



For the following .see under Trails. 



Cruziana {Rusophyciis) bilobata, Hall (sp.). 



C. CARLEvi, J. F. James. 



C. {_Rusophycus) pudica, Hall (sp.). 



