BRACHIOFODA. 
83 
1S31. 
183-2. 
1838. 
1842. 
1813. 
--1844. 
'^1847. 
■^1850 
1850. 
1852. 
1853. 
1855. 
1856. 
1857. 
18.57. 
1858. 
18.58. 
1858. 
1858. 
1858. 
1859. 
-1860. 
1860. 
1860. 
1860. 
1860. 
1860. 
1861. 
1861. 
1861. 
1861. 
1861. 
1862. 
1862. 
1863. 
1863. 
1863. 
1863. 
1864. 
1 1865. 
1865. 
1866. 
Genus A T H Y R I S, McCoy. 1844. 
PLATKS XLV, XLVI, XLVII. 
Terehratula, Eaton. American Journal of Science, vol. xxi, p. 137. 
Terehratula, Eaton. Geological Text Book, p. 46. 
Atrypa, Conrad. Second Ann. Kept. Geol. Survey of N. Y., p. 111. 
Terehratula, d’Orbigny. Voyage dans I’Amerique Meridionale, Pal. p. 46, jd. iii, figs. 17-19. 
Atrypa, Hall. Geology of N. Y. ; Rept. Fourth Dist., p. 198, fig. 5; Tables of Organic Remains, 
No. 65, fig. 5. 
Athyris, Actinoconclms, Serninula, McCoy. Synopsis Carbon. Foss. Ireland, pp. 128, 146, 149, 
158. 
Spirigeiu, d’Oebigny. Comptes rendiis, vol. xxv, p. 268. 
Athyris, Cleiothyris, King. Permian Fossils of England, pp. 136-140, jil. x, figs. 1-10. 
Spirigera, d’Orbigny. Annales des Sciences Nat., vol. xiii, p. 337. 
Terehratula, Hall. Stansbury’s Expl. and Survey of the Valley of the Great Salt Lake, Utah, 
ji. 409, pi. iv, figs. 1, 2. 
Tei-eh-atula, Shumard. Marcy’s U. S. Expl. of the Red River of Louisiana, p. 202, pi. iv, fig. 8. 
Terebi'atula, Schiel. Pacific Railroad Reports, vol. ii, p. 108, pi. i, fig. 2. 
Terehratula, Hall. Pacific Railroad Repoi’ts, vol. iii, p. 101, pi. ii, figs. 3-5. 
Spirigera, Hall. Tenth Rept. N. Y. State Cab. Nat. Hist., p. 153, figs. 1, 2. 
Athyris, David.son. Monogi'. Brit. Permian Brach;, pp. 20-23, pis. i, ii. 
Athyris, Davidson. Monogr. Brit. Carbon. Brach., pp. 77-87, pis. xv, xvi, xvii, xviii. 
Te^'ebraUiIa, Spirigeiu {Athyris), Hall. Ti-ansactions of the Albany Institute, vol. iv, pp. 7, 8. 
Terehratula, Marcou. Geology of North America, pp. 51, 52, pi. vi, figs. 9, 10. 
Spirifera, Rogers. Geology of Pennsylvania, vol. ii, part ii, p. 828, fig. 667. 
Athyris, Hall. Geol. Survey of Iowa, vol. i, part ii, pp. 600, 659, 702, 703, 714; pi. xii, fig. 6 ; 
pi. xxiii, figs. 4, 5 ; pi. xxvii, figs. 1, 2. 
Spingeiu, Meek and Hayden. Proc. Acad, Nat. Sci. Philadelphia, vol. iii, sec. ser., p. 20. 
Athyris, Meek and Worthen. Proc. Acad. Nat. Sci. Philadelphia, vol. iv, sec. ser., ]i. 451. 
Athyris, White. Journal Boston Soc. Nat. Hist., vol. vii, p. 229. 
Athyris, Hall. Thirteenth Rejit. N. Y. State Cab. Nat. Hist., pp. 73, 89, 93, figs. 1-47, p. 94. 
Athyris, McChksney. New Palieozoic Fossils, pp. 46, 47, 80, 81. 
Athyris, Billings. Canadian Journal, vol. v, p. 273. 
Spirigera, Swallow. Trans. St. Louis Acad. Sei., vol. i, jip. 649-652. 
Athyris, Newberry. Ive’s Rept. on the Colorado River of the West, p. 126. 
Athyris, Salter. Quart. Joui-nal Geol. Soc. London, vol. xvii, p. 64, pi. iv, fig. 4. 
Athyris, Billings. Canadian Journal, vol. vi, pp. 138, 145, figs. 54-57. 
Athyris, McChesney. New Palaeozoic Fossils, pp, 78, 79, 81. 
Athyris, Hall. Fourteenth Re 2 it. N. Y. State Cab. Nat. Hist., p. 99. 
Athyris, Hall. Fifteenth Rept. N. Y. State Cab. Nat. Hist., ji. 180, figs. 1-4 ; jil. iii, figs. 10-13, 
15, 16, 24. 
Athyris, Billings. Palaeozoic Fossils, vol. i, p. 144. 
Athyris, Billings. Geology of Canada, ji. 373, fig. 399 ; p. 385, fig. 421. 
Spirigera, Swallow. Trans. St. Louis Acad. Sci., vol. ii, jip. 83-91. 
Spirigera, A. Winchell. Proc. Acad. Nat. Sci. Philadel^ihia, vol. vii, sec. ser., ji. 6. 
Athyris, Davidson. Quart. Journal Geol. Soc. London, vol. xix, p. 170, jih ix, figs. 4, 5. 
Athyris, Davidson. Monogr. Brit. Devon. Brach., p. 13-19, pils. iii, iv. 
Athyns, Shalbr. Bull. Mus. Comparative Zoology, No. 4. p. 69. 
Spirigera, A. 'Winchell. Proc. Acad. Nat. Sci. Philadelphia, vol. ix, pp. 117, 118. 
Spirigeiu, A. Winchell. Geol. Rejit. of the Lower Peninsula of Michigan, ji. 94, 
