691 



Flat. 



page 301 ; An. Rt. Geol. Sur. Pa., 1887. Fragments of the jaws, 

 with teeth, of a large extinct Peccary, found in a crevice in a 

 limestone quarry in Mifflin Co., Pa., and given to the Academy 

 by Mr. John Swartzer. — Human era ? 

 Piatyodus lineatus, Newberry, Pal. Ohio, Vol. 2, 1875, 



page 58, plate 59, 

 fig. 12, natural 

 size, crown sur- 

 face of a solitary 

 tooth of this spe- 

 cies of subcarbon- 

 iferous fish of 



-'^^B^m^^^^^mm^^wif'-^^^m^s^ms^ great size, found 

 ^^^^T^^^^^^^^^^^^^m ^y J^- Newberrv, 

 falOhioir. ^^^^^^m^m^l% on Dunn's farm 



8 miles S. of Liberty, Casey Co,, Ky., somewhat worn by use, 

 eroded by exposure, gently arched in both directions, crossed 

 by wavy lines or rows of points, covering the whole surface; 

 differing thus from all other known fish-teeth.— Fa^'6r^2/, X 

 Platyschisma dubia, Dawson, Acadian Geology, page 309, 

 121 fig. 121, a very small and rare whorled shell, 

 ^'^ only one specimen being found in Lower carlo- 

 ______ niferous limestone of Windsor, N. S. — XI? 



Platystoma grayvillense, name proposed by Worthen in 



XII I. .. ,.,^1^7 :v J a ^^x.— . ^^ 



J^6i. 



Bull. No. 1, Illinois State Museum of Nat. Hist. 1882, for 

 Platystoma tumida. Meek & Worthen, Proc. Acad. Nat. Sci. 

 Phil. 1860, preoccupied by Phillips; and for Pleurotomaria 

 tumida.M. & W. Geol. 111. Vol. 2, 1866, p. 361, pi. 31, figs, la, 

 1 J. See Pleurotomaria grayvillensis^ lelow. — Plat, tumida is 

 mentioned in J. J. Stevenson's list of forms found at Morgan- 

 town, W., Va. in the Decker'^ s Creek Shale beneath the Mahon- 

 ing sandstone (L, p. ST).— Coal Measures, XIII, 



