I 



Ammonoidea — Goniatites. 



31 



The numerous group of the Goniatites is now very much Goniatites 

 subdivided. Its members differ very considerably from each other. GALLERY 

 Some are nearly flat {Beloceras), while others are nearly globular "^W- 



Table- case 

 70. 



Fig. 54. — Goniatite {Glyphioceras Fig. 55. — Goiiiatite [Brancoceras Ixion, 

 sphcericus, Martin). Carboniferous Hall). Goniatite Limestone (Kinderhook 

 Limestone: Derbyshire. Group): Kockford, Indiana. 



Fig. 56- Goniatite {Frolecanites compressus, Sby.). Carboniferous Limestone: 

 Isle of Man. (Reduced.) 



(some forms of Glyphioceras). Sometimes the umbilicus is wide, 

 while the inner whorls are more or less exposed; sometimes it is 



