﻿474 8. W. Ford — Age of the Swedish Paradoxides Beds. 



beds."* More recently Mr. Gr. F. Matthew, in announcing the 

 interesting discovery of the Swedish species, Paradoxides 

 Kjerulfi Linnarsson {Olenellus (?) Kjerulfi Brogger) in America,f 

 states that this species, if "present in America at a horizon cor- 

 responding to that at which it occurs in Europe, should show 

 itself in band b of Division 1" of the New Brunswick meas- 

 ures, instead of in strata which are regarded as the equiva- 

 lents of the Menevian group of the British geologists; from 

 which it would appear that he also considers the Swedish Para- 

 doxides beds as in some measure equivalent to the Harlech 

 or Solva formation. According to Mr. Matthew, P. Kjerulfi 

 has been found both in Newfoundland and in the Kennebecasis 

 Basin of New Brunswick; and is associated in the latter locality 

 with a number of species found in the St. John Basin, which 

 are similar to and in some cases identical with those of the 

 Menevian group of Wales. The beds in which it occurs in 

 Newfoundland, were set down as Menevian by Billings, so long 

 ago as 1872. 



The several subdivisions recognized in the Swedish Paradox- 

 ides beds, and their order of succession, were given by M. Lin- 

 narsson in 1876 as follows : 



(6.) Strata with Agnostus Icevigatus. 



(5.) Strata with Paradoxides Forchhammeri. 



(4.) Strata with Paradoxides blandicus. 



(3.) Strata with Paradoxides Davidis. 



(2.) Strata with Paradoxides Tessini. 



(1.) Strata with Paradoxides Kjerulfi. 



With respect to the above succession, M. Linnarsson admits 

 that the position of the fourth subdivision, or that of the " Strata 

 with Paradoxides olandicus" is doubtful. Division 2 holds, in 

 addition to Paradoxides Tessini, the British species P. Hicksi 

 Salter, which is followed in the next superior division, as in the 

 Welsh measures, by the great P. Davidis. The position of P. 

 Hicksi in the British beds is in the lower portion of the Mene- 

 vian group, and that of P. Davidis in the middle ; and this, it 

 will be seen, is almost exactly their position in the Swedish 

 Paradoxides beds. Salter has pointed out the fact that P. 

 Hicksi is a good deal like an Anopolenus. The bulk of the 

 Swedish fauna appears to be concentrated in Div. 5, or in that 

 of the "Strata with Paradoxides Forchhammeri," which had 

 yielded, up to 1876, about forty species, representing the genera 

 Paradoxides, Agraulos, Anomocare, Liostracus, Dolichometopus, 

 Conocoryphe, Solenopleura, Elyx, Harpides ?, Aneuacanthus, 



*"On the Brachiopoda of the Paradoxides beds of Sweden," p. 21, 1876. 

 (Bihang till K. Svenska Vet. Akad. Handlingar. Band iii, No. 12). 

 f This Journal, III, xxxi, p. 472. 



