284 PALAEONTOLOGY OF NEW YORK. 
Genus STEOPHEODONTA, Hall. 1852* 
PLATE XIII, FIGS. 1-28; PLATE XIV, FIGS. 1-23; PLATE XV, FIGS. 2-24; and PLATE XVb, FIGS. 1-9. 
1830. Plectambonites, Pander ( partim'). Beitr. zur Geognosie des russ. Reich., p. 91, pi. xix, fig. 12. 
1838. Leptcsna, Conrad. Second Ann. Rept. N. Y. Geologfcal Survey, pp. 112, 117. 
1839. Orthis, Sowerby. Murchison’s Silurian System, pi. xiii, fig. 12 ; pi. xxii, fig. 12. 
1841. Orthis, Phillips. Palaeoz. Foss. Cornwall, Devon and West Somerset, p. 61, pi. xxv, fig. 103. 
1842. Strophomena, Conrad. Journ. Acad. Nat. Sci. Phila., vol. viii, pp. 254-259, pi. xiv, figs. 2, 3, 6, 
7, 10, 11, 14, 19. 
1842. Strophomena, Vanuxem. Geology of N. Y. ; Rept. Third District, p. 174, fig. 1. 
1843. Strophomena, Hall. Geology of N. Y. ; Rept. Fourth District, p. 104, fig. 3; p. 171, fig. 4; 
p. 200, fig. 4; p. 266, figs. 1, 5. 
1845. Leptcsna, de Verneuil. G6ol. Russ, et des Mont, de l’Oural, p. 220, pi. xiv, fig. 1; p. 223, pi. xiv, 
fig. 2; p. 224, pi. xiv, figs. 3, 4; p. 230, pi. xv. fig. 3. 
1846. Orthis, McCoy. Synopsis Silurian Fossils Ireland, p. 30. 
1848. Leptcsna, Davidson. Bull. Soc. Geol. de France, Ser. 2, vol. v, p. 318, pi. iii, fig. 9. 
1848. Orthis, Strophomena, Phillips and Salter. Mem. Geological Surv. United Kingdom, vol. ii, 
pp. 288, 379. 
1852. Leptcsna, Stropheodonta, Hall. Palaeontology of N. Y., vol. ii, pp. 61, 63, pi. xxi, figs. 4, 5, 9; 
p. 327, pi. lxxiv, fig. 6. 
1852. Strophodonta, Owen. Geol. Surv. Wisconsin, Iowa and Minnesota, pp. 584, 585. 
1853. Leptcsna, Schnur. Beschr. Eifel vorkomm. Brachiopoden, pp. 222-224, pi. xxxix, fig. 5; pi. xli, 
figs. 1, 3, 6 ; pi. xlii, figs. 3, 4. 
1857. Strophomena (Strophodonta), Hall. Tenth Rept. N. Y. State Cab. Nat. Hist., pp. 52-55, 111, 
113-115, 137-145. 
1858. Strophomena, Rogers. Geology of Pennsylvania, vol. ii, p. 827, figs. 665, 666. 
1858. Strophodonta, Hall. Geol. Surv. Iowa, vol. i,. pt. ii, pp. 491-493, 495, 496, pi. iii, figs. 1-3, 5, 6. 
1859. Strophodonta, Hall. Palaeontology of N.Y., vol. iii, pp. 180-184, 191,194, 411-415, 482, pi. viii, 
figs. 2-16; pi. xvi, figs. 1-14 ; pi. xviii, fig. 1; pi. xxii, fig.l; pi. xcii, 
figs. 2-4; pi. xciii, figs. 2-4 ; pi. xciv, figs. 2, 3 ; pi xcv, figs. 8-10; 
pi. xcv A, figs. 13-19. 
1860. Strophodonta, Swallow. Trans. St. Louis Acad. Sci., vol. i, pp. 635-639. 
1860. Strophodonta, Hall. Thirteenth Rept. N. Y. State Cab. Nat. Hist., p. 90. 
1861. Strophomena, Billings. Canadian Journal, 2nd Ser., vol. vi, p. 338, fig. 113; p. 340, figs. 116-118; 
pp. 341, 343, 344, 348, 349. 
1863. Strophomena, Billings. Geology of Canada, p. 367, figs. 374, 375, 377; p. 961, figs. 468, 469. 
1863. Strophodonta, Hall. Sixteenth Rept. N. Y. State Cab. Nat. Hist., pp. 36, 37. 
1863. Strophomena, Billings. Proc. Portland Soc. Nat. Hist., p. 109, pi. .iii, fig. 3. 
1865. Strophomena, Billings. Palaeozoic Fossils, vol. i, pp. 120, 122, figs. 98-101. 
1865. Leptcsna, Davidson. British Devonian Brachiopoda, p. 85, pi. xviii, figs. 15-18. 
1865. Strophomena, Winchell and Marcy. Memoirs Boston Soc. Nat. Hist., vol. i, p. 92, pi. ii, fig. 9. 
1865. Strophodonta, Meek. American Journal Science, vol. xl, p. 33. 
1866. Strophodonta, Winchell. Rept. Lower Penin. Michigan, p. 93. 
1867. Strophodonta, Hall. Twentieth Rept. N. Y. State Cab. Nat. Hist., p. 369, pi. xiii, fig. 34. 
1867. Strophodonta, Hall. Palaeontology N. Y., vol. iv, pp. 81-93, 96-111, 113,114, pis. xi; xii, figs. 1-15; 
xiii; xiv, fig. 2 ; xv, figs. 1-14 ;. xvi; xv'ii; xviii; xix, figs. 1-5, 8-19. 
1868. Strophodonta, Meek. Trans. Chicago Acad. Sci., vol. i, pp. 87, 88, pi. xiii, figs. 6, 7. 
1871. Strophomena, Davidson. British Silurian Brachiopoda, pp. 286, 307, 309, 315, pi. xli, figs. 1-6; 
pi. xliii, figs 16-20 ; pi. xlvi, figs. 7-10. 
* Stropheodonta, “Gr. orpocpsvg', cardo, and odovg", dens.” This term has come into general use 
with the form Strophodonta, which has a different etymology. It may be well to adhere to the original 
form of the word as more appropriate in its application to these shells. 
