REPORT OF THE DIRECTOR I918 I7I 



but a cross section of these would well represent the chert sections. 

 The interior is filled, with a greenish, dark, granular material and 

 the shell is large for this type. 



Nodosaria radicula (Linne) 



Plate 3, figures 16, 17 



Nautilus radicula (Linne) 1767, Syst. Nat., 12th ed., p. 1 164, 285; 



1788, ibid. 13th (Gmelin's) ed., v. i, pt 2, p. 3373, no. 18 

 Nodosaria lepida Reuss, i860, Sitzungsb. d. k. Akad. W. math. 



naturw., ,cl., v. 40, no. 8, p. 178, pi. i, fig. 2 

 Dentalina subrecta Reuss, i860, ibid., p. 182, pi. i, fig. 10 

 Nodosaria kirkbyi Richter, 1861, in Geinitz's Dyas, heft i, p. 121, 



pi. XX, fig. 30 

 Nodosaria radicula Brady, 1876, Carbonif. Foram., Paleont. Soc, 



30:124, pi. X, figs. 6-16 

 Nodosaria ovali's Schmid, 1867, Neues Jahrb, fiir Min. p. 588, 



pi. VI, figs. 50, 51 



The cross section of Nodosaria radicula observed in 

 the chert of slide i shows seven uniformly enlarging segments over- 

 lapping about one-half way the succeeding chamber. The aperture 

 opening is distinctly visible on most segments, and the marginal 

 sutures are pronounced. The species is well represented by figures 

 6 and lo of the Carboniferous Foraminifera (Brady, loc. cit.) the 

 former, N. geinitzi Reuss, and the latter, N. kirkbyi 

 Richter. This species is rather closely related to Dentalina 

 e 1 e g a n s d'Orbigny, but the latter has many segments, while 

 N. radicula has seldom more than seven and often only four. 



Brady states that he did not discover this type in any horizon 

 below the Permian where, in England, it seems to be confined to 

 the Upper Magnesian limestone of that era. The species is recorded 

 by Vadasz as not common in the Trias of Bakony. The length 

 of one example measures 0.18 mm, but many forms of this species 

 occur in the cherts. 



Nodosaria soluta Reuss 



Plate 3, figures i8, 19 



Nodosaria (D.) soluta Reuss, 1851. Zeitschr d. deutsch. geol. Gesel- 



Isch., 3:60, pi. iii, fig. 4, a, b 

 Dentalina globifera Reuss, 1855, Sitsungsb. d. k. Akad. W. Wien., 



18:223, Pl- I. fig- 3 

 Nodosaria soluta Vadasz, 1910, Triasforam. aus dem Bakony, p. 20, 



pi. I, fig. 14 

 Nodosaria soluta Chapman, 1893, J?^^. R. Microsc. Soc, p. 587, 



pi. viii, fig. 26 



