284 C. A. SUSSMILCH AND T. W. E. DAVID. 



Lepidodendron veltheimianum 



„ sp. (cf. L. dichotomum of Europe or L. sculatum of 



North America. 

 Ulodendron sp. Stigmaria sp. 



Pitys sp. (? RhacopterisJ. 



This assemblage of plants, though small, gives a fairly 

 good idea of the age of the beds. The recorded occurrences 

 of Lepidodendron veltheimianum both in Europe and 

 America appear to be all in rocks of Lower Carboniferous 

 age. Kidston 1 records it both from the Oalciferous sand- 

 stone and Carboniferous limestone of Scotland and England, 

 and from the Culm of Silesia; he mentions also its occur- 

 rence in the Carboniferous of Brazil. David White 2 refers 

 to its occurrence in the Middle Mississippian of America 

 where it is associated with Rhacopteris, Cardiopteris, 

 Asterocalamites, Sphenopteris, etc. Seward 3 speaks of 

 L. veltheimianum as "a species characteristic of Lower 

 Carboniferous strata," and also (p. 128) notes the occur- 

 rence of the Ulodendron condition of this species from the 

 Calciferous sandstone of Midlothian. 



The specimens of Ulodendron throw no further light on the 

 age of the beds, nor do the examples of Stigmaria which 

 simply represent the underground portionsof Lepidodendron. 



Some specimens with structure beautifully preserved, 

 show close affinities with species of Pitys (P. antiqua, P. 

 primceva) that have been described from the Calciferous 

 sandstone of Berwickshire, 4 



This small flora indicates undoubtedly a Lower Carboni- 

 ferous Age for the beds in which it occurs. There is, how- 

 ever, hardly sufficient material to determine more exactly 



1 Proc. E. Phys. Soc. Edinb., xn, pt. 2, 1894, p. 160. 



2 Journ. Geol. xvn, 1909, p. 320. 



3 Fossil Plants. Vol. n, 1910, p. 100. 



* See Seward, Fossil Plants, in, pp. 285 - 289 



