10 University Geological Survey of Kansas. 



FUSULINA. 



Fischer, Oryct. Moscou, p. 126, pi. XVIII, ff. 1-5, (1837). 



Fusulina secalica. Plate I, figs. 1, lb. 



Miliolites secalicus Say, Long's Exped., p. 151, foot-note, (1823). 

 Fusulina cvlindrica Fischer, ibid., (1837); Meek, Fin. Rep. U. S. Geol. 

 Surv. Neb., p. 140, pi. i, f. 2; pi. ii, f. 2; pi. v, f. 3; pi. vn, ff. 8a, b, 



(1872). 

 For further synonomy, see Weller, Bull. U. S. Geol. Surv., 153, p. 280, 

 (1898). 



Meek's description: " Shell small, fusiform or subcylin- 

 drical, more or less ventricose in the middle, somewhat obtusely 

 pointed at the extremities, which generally have the appear- 

 ance of being a little twisted. Surface smooth excepting the 

 septal furrows, which are moderately distinct, more or less 

 regular, and a little curved as they approach the extremities. 

 Aperture apparently linear, and not visible as the specimens 

 are generally found. Volutions 6 to 8, closely coiled, the spaces 

 (near the middle) being rarely more than twice the thickness 

 of the shell walls. Septa about 20 to 33 in the last or outer 

 turn of adult specimens, counting around the middle ; compara- 

 tively straight near the outer walls, but strongly undulated 

 laterally within ; foramina passing through the walls, moder- 

 ately distinct in well-preserved specimens — as seen under a 

 high magnifying power, in transverse sections near the mid- 

 dle of the shell, somewhat radiating, and numbering in the 

 outer turn of a medium-sized specimen, from 12 to 20 between 

 each two of the septa. Varying considerably in size and form." 



Range and distribution : Very abundant throughout the 

 Upper Coal Measures of the state. 



There have been two species and three varieties of this little 

 shell described from the rocks of the United States. These varie- 

 ties were considered species by their author at one time and were 

 later reduced to varieties by him. Nearly all the forms that 

 have been described are found in the rocks of the state. They 

 are : Fusulina gracilis, robusta, and F. ventricosa Meek, as well 

 as F. elongata Shumard. In dividing these foraminifera into 

 species, it is to be remembered the conditions for their growth 

 were extremely favorable here during Carboniferous time, for 



