474 C. SCHUCHERT PALEOGEOGRAPHY OF XORTH AMERICA 



region, and thence into eastern Massachusetts between Boston and Wor- 

 cester, and probably into Connecticut/" 7 The present writer believes that 

 two distinct land-masses are here involved. In this paper the northern 

 one is called Xewbrunswickia, while the regions within the United States 

 are included in Taconia. See Acadia. 



N eivbrunswickia. — See Acadia. 



Newfoundlandia. — See Acadia. 



Xew Hampshire range. 110 — Dana extends this range "from the borders 

 of Maine and Canada, through Xew Hampshire and Massachusetts into 

 Connecticut, making the east side of the Connecticut" trough. Accord- 

 ing to the maps of the writer, this protaxis of Dana is in general the 

 bounding western region of Acadia or Taconia. See Acadia. 



Novascotia. — See Acadia. 



Ozarkia. — See Missouria. 



Siberia. — Almost nothing is known of the geology of eastern Siberia, 

 and it is represented as land in the present maps to obviate drawing in a 

 sea where none are as yet known to have existed. 



Siouxia. — An extensive Paleozoic land embracing the greater part of 

 the Great Plains area of the United States. At times it was divided by 

 Montana strait into northern and southern subelements. Its western 

 border is established along the Front range of Colorado and Xew Mexico 

 by the eastward thinning of the Paleozoic formations combined with the 

 geographic position of the floral horizons of the Ouray basin. In Wyo- 

 ming the absence of certain Paleozoic deposits also indicates the presence 

 of this land. To the east the land is again seen plainly in the Sioux 

 quartzite of northwestern Iowa, while to the southeast it was often in 

 direct connection with Missouria, as proved by the isolated faunas of 

 Oklahoma. At times Siouxia was also united with Columbia, the exten- 

 sive land then separating the Mississippian and Cordilleran provinces, 

 and at such times the latter name should take precedence. 



Taconia. — See Acadia. 



Tennesseia. — See Cincinnati axis. 



Ungava. — See Laurentia. 



Utah. — A small positive Paleozoic element, constant in eastern Utah, 

 but spreading variously at different times, and was often but a western ex- 

 tension of Siouxia. When of smallest area it lay between the Great basin 

 and Ouray basin. Willis included Utah in his "Kocky Mountain ele- 

 ment" (1907, 398), also called "Colorado" (1907, 395, 396). 



Wisconsia. — See Laurentia. 



uo Dana : American Journal of Science, vol. 39, 1890, p. 379. 



