290 The Upper Cretaceous Floras of the World 



published in 1889, was the main basis for Fric and Bayer's subsequent 

 contributions to this flora. The Perucer beds consist of a basal con- 

 glomerate developed locally, above which are coarse and fine sandstones, 

 and dark micaceous clays with lenses of lignite. They are strikingly 

 like the Earitan and Magothy formations of the Atlantic Coastal Plain 

 or the Tuscaloosa formation of the Eastern Gulf area, and as in the case 

 of the American beds, the lignites contain pellets of amber. The Perucer 

 beds in different parts of the Bohemian basin overlie the ancient crystal- 

 line rocks and the strata of Silurian, Carboniferous or Permian. They 

 are regarded by Fric and Bayer as fresh water deposits and by Woldrich ' 

 as of marine origin, although they contain no marine fossils as far as is 

 known. Like the American formations mentioned above they are prob- 

 ably partly of continental origin and in part represent the initial deposits 

 of the shallow eastern portion of the north European Cretaceous sea. 

 The latest work by Fric and Bayer enumerates, in addition to the plants, 

 2 vertebrates, 3 fresh-water mollusca, 22 insects (mostly obscure tracks, 

 galls, etc.), and 2 doubtful forms. The plants come from over 40 

 localities, of which the best known and most prolific are Hloubtein, 

 Vyserovic, Kounic, Melnik, Landsberg, Bohdankov, Lipenec, Peruc, 

 Mseno, Lidic, Otruby, Vydovle and Kuchelbad. They include the fol- 

 lowing species : 



Abies chuchlensis Velenovsky 

 Acrostichum cretaceum Velenovsky 

 Acrostichum tristanicrphyllum Bayer 

 Aralia anisoloba Velenovsky 

 Aralia daphnophyllum Velenovsky 

 Aralia decurrens Velenovsky 

 Aralia (Panax) dentifera Velenovsky 

 Aralia formosa Heer 

 Aralia furcata Velenovsky 

 Aralia koivalcwskiana Saporta 

 Aralia minor Velenovsky 

 Aralia propinqua Velenovsky 

 Aralia transitiva Velenovsky 

 Aralia triloba Velenovsky 

 Araucaria bohemica Velenovsky 

 Aristolochia tecomaxarpa Bayer 



1 Woldrich, Sitz. k. bohm. Gesell. Wiss., Prag, 1899, p. 26. 



