[Reports volI-XIII] . 7 la. Dorsal aepeet. (Rowley collection )lb. Portion of another exan pie. (Mns. Mo )Sllnrian, Trenton limestone. , Fie. 2. Cyphaspis girardeauemit 228 Type. (After Shumard )SUnilan, Girardeau limestone. Fis 3. Balmanites tridentifera 229 8a. Head of large specimen. (After Shumard )3b. Pygidinm of tmaller Fig 4. Acidaspit halli 230 Pygidinm. (After Shnmard )Sllnrian, Girardeau limestone. Fig 5. Calymene niagarensia. Lateral view (Keyes collection )Silurian, Niagara limestone. Fig 6. tubercuJata 235 Pygidium. (Keyes collection.)Caibon
[Reports volI-XIII] . 7 la. Dorsal aepeet. (Rowley collection )lb. Portion of another exan pie. (Mns. Mo )Sllnrian, Trenton limestone. , Fie. 2. Cyphaspis girardeauemit 228 Type. (After Shumard )SUnilan, Girardeau limestone. Fis 3. Balmanites tridentifera 229 8a. Head of large specimen. (After Shumard )3b. Pygidinm of tmaller Fig 4. Acidaspit halli 230 Pygidinm. (After Shnmard )Sllnrian, Girardeau limestone. Fig 5. Calymene niagarensia. Lateral view (Keyes collection )Silurian, Niagara limestone. Fig 6. tubercuJata 235 Pygidium. (Keyes collection.)Caiboniferone, Bnilington limestone. Fig 7. Phillipaia portlockii , 236 Dorsal aspect (Keyes collection.)CarboniferouB, K oknk lim) stone Fig 8. Phillipsia major 238 8a Buckler of coiled epecimen. (Hare collection ) 8b. Pygidinm of same. 8c. Lateral aspect of same 81. View of another example. (Same collection ) 8e, Large Indivldnal. (Mns Kansas Univ )Carboniferous, Upper Coal Measures MISSOURI GEOLOGICAL SURVEY. PLATE XXXll.
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