GONIATITES. 79 



1837. AmtiKJii/'fcs xp/iitr/cu-s, E. Hcyrich, Do (loniiititis in Mont. Rhon., p. 1.3. 

 1837. Ammonites sphsericm, E. Boyrit-h, Beitr. ■/,. Kennt. Khein. rel)ori>anfjso-eb., 



P-38. 

 18-i2— t. AiiiiKonitex sjihit^ricii.^, L. CJ. de Konini-k, Dcscr. unini. foss., p. 570, PI. 



XLIX, fig.s. 6; PI. L, figs. 9, 10. 

 18JW:. Goniatltes sphivrlcim, F. MrCoy, Syiiop. Carh. Foss. Ireland, p. 15. 

 1846. Goniatites .y^Aa^/'/cw.s, F. A. Quenstedt, Petrifact. Dcutschl., Vol. I, Cephalo- 



poden, p. 66, PI. Til, fig. 11 (not fig. 10 a-d). 

 1850. AganidcK HpIiHTicKK (pars), A. d'Orl)igny,Prod. .do PalcHint., Vol. I, p. 115. 

 1855. Aganideii spluvricm, F. McCoy, Brit. Pal. Fossils, p. 5ti(). 

 1867. Goniatites sphasricus, H. Trautschold, Bull. See. Imper. Nat. Moscou, Vol. 



XL, No. 3, p. 44, PI. V, fig. 10. 

 1875. Goniatites spluericus, W. H. Baily, Charact. Fossils, p. 117, PI. XL, figs. Da, b. 

 1880. Goniatites sphsericiis (pars), L. G. de Koninck, Faune calc. car))on. dc la 



Belgique, Vol. I, p. 249, PI. XLVII. figs. 3-5. 

 1884. Glyphioceras sj)}uerieum, A. Hyatt, Proc. Boston Soc. Nat. Hist., Vol. XXH, 



p. 329. 

 1888. Goniatites sphasricus, R. Etheridge, British Fossils, Vol. I, Palaeozoic, p. 312, 

 1897. Glyjj/iioceras sjj/ixriciii/i, Foord and Crick, Catal. Foss. Ceph. Brit. Mus., Pt. 



HI, p. 157, fig. 73. 



1897. GJyphiorems sphiericain, S. Weller, Trans. N. Y. Acad. Sci., Vol. XVI, 



' p. 271, PI. XXI, figs. 1, 2. ^ 



1898. Goniatites sphas/'icus, E. Haug, Etudes sur les Goniatites, p. 26. 



1901. GlxjpJuoceras sphsericum^ F. Freeh, Ueber devonische Anunoneen, p. 84, fig. 

 37 b and c. 



This species was somewhat doubtfully identified by Weller from the 

 so-called Batesville sandstone, St. Louis-Chester stage, Lower Carbonif- 

 erous, of Batesville, Ark. Since the same group has furnished in that 

 region G. crenistria and G. striatus the occurrence of G. sphcBricus is not at 

 all unlikely, but better specimens must be found before the identification 

 will be certain. The European form was the one chosen by Hvatt as the 

 type of his genus Ghjphioceras. 



For the distinctions between Goniatites crenistria, G. sphccricus, and 

 G. striatus see the desciiptions of G. crenistria and G. striatus, where the 

 relations of all three are fully discussed and the comparative dimensions 

 given. The three species have usually been confused, and indeed they are 

 separated by veiy slight differences, which seem, however, to be fairly 

 constant. But it is by no means impossible, nor even unlikely, that at least 

 G. crenistria and G. striatus may be the same species, and both possibly only 

 a variety of G. sphcericus. 



Occurrence. — Lower Carboniferous, St. Louis-Chester stage, Batesville 

 sandstone, Batesville, Ark. 



