WRITINGS OF F. B. MEEK AND F. V. HAYDEN. 31 



Page. 



Myacites (Schlot.), Munster, 1840 51 



M. depressus, n. 8., Meek, 1864, pLviii, figs. 6 and 6 a 51-52 



Cephalopoda 53 



Belemnitidce 53 



Belemnites, Auct 63 



Belemnites, , 1864, pi. viii, figs. 9and9a 53 



29. 



Meek, F. B., and Hayden, F. V. Paleontology of tlie Upper Missouri. <]Smith- 

 soniau contributions to knowledge (172), pp. 1-135, pis. i-v. 1864. Washington, 

 1865. 



Primordial, Carboniferous, Permian, and Jurassic. Genera Camptonectes, Lioplacodes, 

 Eumicrotls, Clioenomya. This work contains descriptions of new fresh-water Jurassic species, 

 the first of that age discovered in North America. The work has additional importance in 

 consequence of the philosophical discussion of important questions. 



Page. 

 Introduction VII-IX 



SILURIAN, AGE. (POTSDAM OB PRIMORDIAL PERIOD.) 



Mollusea. 

 Brachiopoda. 



Lingulidce 1 



Lingulepis, HaU, 1863 1-2 



L. pinniformis, Owen, 1852, pi. i, figs, la, 6 2-3 



L. prima (Conrad), Hall, 1847, pi. i, figs. 2 a,b 3 



Obolella, Billings, 1861 3-4 



O. nana, M. & H., 1861, pi. 1, figs. Sa-d 4 



Gasteropoda. 

 FUropoda. 

 Thecosomata * 



Oavolinidce 4-5 



Theca, Sowerby, 1845 5 



T. gregaria,'iS.. & H., 1861, figs, a-d, p. 5 5-6 



Articulata. 

 Crustacea. 

 Trilohita. 



Paradoxidce 7 



Agraulos, Corda, 1847 7-9 



A.oweni,'M.. & H., 1861, figs, a-c, p. 9 9-10 



Agraulos ? pi. i, fig. 4 10 



CARBONIFEROUS AGE. ( CARBONIFEEOUS PERIOD.) 



Protozoa. 

 Bhizopoda. 

 Foraminifera. 



Camerinidce 11-13 



J'wswZina, Fischer, 1837 13-14 



F. cylindriea, Fischer, 1837, pi. i, figs. 6 a-i 14-15 



Mollusea. 

 Brachiopoda. 



Spiriferidce 16 



Spirifer, Sowerby, 1815 17-20 



Trigonotreta, Koenig, =)Spm/er of most authors 19 



Martinia, McCoy, =AinbocceUa, HaU 19 



S. (Martinia) plano-eonvexus Sbumard, 1855, figs, a-e, p. 21 20-21 



Productidte •. 21-22 



Chonetes, Fischer, 1837 22 



G. mucronata, M. & H., 1858, pi. i, fig. 5, a-« 22-23 



Strophomenidce 23 



Hemipronites, Pander, 1830 24-26 



S. crassus, M. &. H., 1858, pi. i, fig. 7 o-d 26-37 



