126 TRANSACTIONS OF THE [mAR. 28, 



Thuja, and Araucaria, but all were different from livinggenera. 

 Along the marshy shores grew gigantic equiseta and ferns. Re- 

 mains of a few sea-weeds have been found, but it is evident that 

 the turbid and turbulent water was not congenial to marine 

 vegetation. The following is a list of the plants which have 

 been identified in the Trias of New Jersey and the Connecticut 

 Valley: 



Bajera Minister iana, Sap. 



Brachyj)hyllum gracile, Newb. 

 " folio sum, " 



Cheirolepis Munsteri, Schenk, sp 



Clathropteris lilatypliylla, Brong. 



Dendrophycus Triassicus, Newb. 



Dioonites longifolius, Em., sp. 



Equisetum Roger si, Schimp, 



Loperia simplex, Newb. 



Otozamites latior. Sap. 



'* brevifolius, Fr. Br. 



Palissya diffusa, Em. sp. 



8chizoneura planicostata, Rogers, sp. 



Of these all but two have been found in the Trias of Virginia 

 and North Carolina, and prove what was before generally believed, 

 that the age of the rocks under consideration is essentially the 

 same from Massachusetts to North Carolina. Prof. Fontaine 

 has shown that the plants of the Richmond Basin have greater 

 afl&nity with those of the Rhastic beds of Europe than with 

 those of any other horizon, and has inferred from this fact tliat 

 the southern extension of our Triassic rocks hold the same posi- 

 tion in the geological scale. I am able to give some additional 

 facts which confirm and emphasize this conclusion. At Dur- 

 ham, Connecticut, are found fronds of cycads which are quite 

 undistinguishable from those so common in the Rh^etic of Ger- 

 many and France, viz., Otozamites latior, Sap., and Otozamites 

 brevifolius, Fr. Br. With these is a fern which cannot be dis- 

 tinguishes from Clathroptei'is platyphylla, Brong. Hence we may 

 be certain that at least such portions of our Triassic rocks as 

 have yielded plants represent the upper division of the Trias of 

 Europe. 



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