THE CARBONIFEROUS ROCKS OF CANONBIE, DUMFRIESSHIRE, ETC. 801 



The following table shows the vertical distribution of the fossil plants from the 

 Middle Coal Measures of the Byre Burn series. 





TJ. C. M. 



M. C. M. 



L. C. M. 



Sphenopteris obtusiloba, Brongt., . 





X 



X 



,, Laurenti, Aiidrse, 















X 



X 



„ mixta, Schimper, 















X 





,, Hxningliaitsi, Brongt., 















X 



X 



,, multifold, L. and H., 















X 





Pecopteris, sp., . 



















Mariopteris muricata, Schloth., sp., 













X 



X 



X 



Alethopteris lonchitica, Schloth., sp., 













X 



X 



X 



,, Davreuxi, Brongt., sp., 













X 



X 





,, Grandini, Brongt., sp., 













X 



X 





Neurop/erid heterophylla, Brongt., . 















X 



X 



„ gigdnted, Sternb., 















X 



X 



Cdldmites undulatva, Sternb., 













X 



X 



X 



,, Schiitzei, Stur, . 















X 



X 



,, patidramis, AVeiss, 















X* 





,, ramosus, Artis, . 













X 



X 



X 



,, Sttckowii, Brongt., 













X 



X 



X 



,, Cistii, Brongt., 













X 



X 



X 



Caldmodd'his equisetiformis, Schloth., sp., 











X 



X 



X 



,, charseformis, Sternb., sp., 













X 





Pdlgeostdchyd Ettingshavseni, Kidston., n.sp., 













X 



X 



Cf. Paracalamosidchys Williamsmiana, Weiss, 













3 



X 



Annular id rddidtd, Brongt., see Catamites romosu. 



;, Artis, 











X 



X 



Lepidodendron, cf. lycopodioides, Sternb., . 













X 



X 



Sigillaria elegans, Sternb., sp., 













X 



X 



Pinakodendron Macconochiei, Kidston, n.sp., 













X* 





Stigmaria ficoides, Sternb., sp., 











X 



X 



X 



SplienopJnjlluia cuneifoUum, Sternb., sp., . 













X 



X 



„ ,, var. sdxifrdgtefoliam, 



Stbg. (? 



p.). 









X 



X 



Corddites principdlis, Germar, sp., 













X 



X 



Corddidntlius, cf. Pitcdirniiv, L. and H., sp., 













X 



X 



„ Volkmdnni, Ett., sp., 













X 





Corddicdrpus Cordai, Geinitz, sp., 













X 





Carpolithes, sp., .... 

















Sternbergid, sp., ... 

















Of the Byre Burn group of fossil plants a few extend into the Upper Coal Measures 

 of England, but these belong to those species which are common to all three divisions 

 of the Coal Measures, with the exception of Alethopteris Davreuxi, Brongt., sp., and 

 Alethopteris Grandini, Brongt., sp., which were fairly plentiful at Localities C and D, 

 which, however, as already mentioned, are different portions of the same bed. I have 

 not previously met with Alethopteris Grandini, Brongt., sp., below the Upper Coal 

 Measures. 



A greater number of the Byre Burn plants also occur in the Lower Coal Measures, 

 but after deducting these there are several left which are peculiar to the Middle Coal 

 Measures, as far as at present known. These are Sphenopteris mixta, Schimper, Sphen- 

 opteris multifida, L. and H., Catamites pauciramis, Weiss, Calamocladus charosformis, 



These are the first British records, hut their horizon on the Continent corresponds to our Middle Coal Measures. 



