Distribution of the Rhabdojjhora. 

 Table X. {continued). 



21 



Family V. Phyllograptidje. 

 Phyllograptus angustifolius, Hall, 



Anna, Hall 



densus, Tomq 



typus, Hall 



stella, Hopk 



Family VI. DiPLOGRAPTiDiE. 



Diplograptus inutilis, Hall 



dentatus, Brongn 



angustifolius, Hall 



amplexicaulis, Hall 



euglyphus, Lapiv 



rugosus, Emmons 



Whitfieldii, Hall 



foliaceus, March 



truncatus, Lapw 



hudsonicus, Nich 



quadrimucronatus, Hall . . . . 



pristis, His 



socialis, Lapw 



aculeatus, Lapw 



vesiculosus, Nich 



acununatus, Nich 



modestus, Lapw 



insectiformis, Nich 



tamariscus, Nich 



physophora, Nich 



Hughesi, Nich 



sinuatus, Nich. . 



folium, His 



palmeus, Barr 



Dimorphograptus elongatus, Lapw, 



Swanstoni, Lapw 



Cephalograptus cometa, Gtin. . . 

 ^Cryptograptus tricornis, Carr. . . 

 Scha:feri, Lapw 



Ordovician. 



Lower. Upper. 



SlLUKIAX. 



Lower. 



Middle. 



o o 



T3 O 



