Maryland Geological Survey 247 



tropical South America ; but such a view is entirely untenable in the 

 light of the disclosed species of Liquidambar, Cissites, Persea, Meni- 

 spermites, Platanus, Populus, Betulites, Quercus, etc. 



The Argentinean geologists regard these beds as Cenomanian, but they 

 are probably not older than the Turonian. 



Antarctica 



This vast continental area, so little known, has in recent years fur- 

 nished traces of the Glossopteris flora, 1 an extensive late Jurassic flora/ 

 a few Upper Cretaceous woods 3 and coniferous twigs, 2 and a series of 

 Tertiary woods, 3 as well as an extensive series of leaf remains 4 of early 

 Tertiary age. 



The traces of a flora that is referred to the Upper Cretaceous are neither 

 extensive nor important. They comprise coniferous twigs which 

 Nathorst compared with Sequoia fastigiata (Sternberg) a characteristic 

 Upper Cretaceous species of the northern hemispheres. Gothan described 

 the following woods : 



Phyllocladoxylon antarcticum Gothan 

 Dadoxylon pseudoparenchymatosum 

 Laurinoxylon uniseriatum 

 Nothofagojcylon scalariforme 



but which of these are Cretaceous and which are Tertiary is not certainly 

 known. 



Australia 



There have been more worthless articles written about the Cretaceous 

 and Tertiary floras of Australia than of any other equal area of the 

 earth's surface. With the exception of Ettingshausen and Ferd. von 



Reward, A. C, British Antarctic (Terra Nova) Expedition, 1910, Geology, 

 vol. i, No. 1, 1914, pp. 49, tf. 6, pis. viii, 2 maps. 



2 Halle, T. G., The Mesozoic Flora of Graham Land. Swedish South Polar 

 Expedition, 1901-1903, vol. iii, 1913, pp. 123, pis. ix, tf. 19. 



3 Gothan, W., Die fossilen Holzer von der Seymour-und Snow Hill Insel. 

 Ibid, 1903, 34 pp. 2 pis. 



4 Dusen, P., Die tertiare Flora der Seymour Insel. Ibid., 1908, 28 pp., 4 pis. 



