Vol. 65.] FOSSIL PLANTS FROM THE KENT COALFIELD. 31 



Cordaitales. 



Cordaites, linger, 1850. 



' Gen. et Spec. Plant. Foss.' p. 277. 

 Cordaites principalis (Germar). 



1848. Mabellaria principalis, Germar, ' Verst. Steink. Wettin u. Lobejiin' p. 55 



& pi. xxiii. 

 1886-88. Cordaites principalis, Zeiller, ' Flore Foss. Bass. Houill. Valenciennes ' 



p. 629 & pi. xciii, fig. 3 ; also pi. xciv, fig. 1. 

 1893. Cordaites principalis, Kidston, Trans. Roy. Soc. Edinburgh, vol. xxxvii, 

 p. 352 & pi. ii, figs. 8-8 a ; also pi. iv, figs. 16-17. 

 Wa.l der share Series at 1900, ? 1901, 1903, 1922, 1934, 1950, 1954, & 2170 



feet. 

 Fredville Series at 1400 feet. 



The fragments of Corclaitean leaves in these cores appear to me 

 to be probably referable to this species, but there is a possibility 

 that, in the Waldershare core, others may belong to Cordaites 

 •angulosostriatus, Grand 'Eury. 



Cordaicarpus, Grand'Eury, 1877. 



' Flore Carbon. Loire, &c.' p. 233. (Mem. Div. Saw Acad. Sci. Paris.) 



Cordaicarpus sp. 



IF a l.derslia r e Series at 1766 feet. 



Small seeds, about 6 millimetres in length, of th.3 type of 

 Cordaicarpus gutbieri, Geinitz, and G. ovatus, Brongn. 



III. The Horizon. 



On the next page a complete list is tabulated of the species 

 recorded from the Kent Coalfield, including, in addition to those 

 from the Waldershare and Eredville Series described here, the 

 records from the Dover Series, given by Prof. Zeiller. 1 



Comparing the plants from the Waldershare and Fredville cores, 

 it will be seen that, with the following exceptions, all the more 

 abundant and characteristic species are common to both series. 

 Annidaria stellata (Schloth.), Neuropteris obliqua (Brongn.), 

 Odontopteris lindleyana, Sternb., Mariopteris muricata var. nervosa, 

 Brongn., are the more important species which have not been 

 found in the Eredville core. On the other hand, two Eredville 

 species have not beea recorded from Waldershare : — Alethopteris 

 serli (Brongn.), and possibly Lepidophyllum lanceolatum, L. & P£. 

 The general agreement of the two floras is, however, striking, and 

 leads to the conclusion that the Waldershare and the Fredville Series 

 both belong to the same horizon. The fact that the Waldershare 

 core has yielded a rather larger number of species than that from 

 Eredville is not surprising, seeing that this boring was carried 



1 Zeiller (92). 



