228 DENTALIUM, MESOZOIC. 



D. SPITIENSE Guembel, 1866. Sitzungsber. K. bayer. Akad. Wis- 

 sensch. Miinchen, Jahrg. 1865, Vol. ii, p. 360, plate, fig. 7. 



Trias, Thibet. 



D. STRAMINEUM Gabb, 1864. Geol. Surv. California, Paleont., 

 i, p. 139, pi. 21, fig. 101. 



Cretaceous : Northeast of Martinez, San Diego, etc., California. 



D. SUBARCUATUM Conrad, 1853. Journal Acad. Nat. Sci. Phila. 

 (2 Ser.), Vol. ii, p. 276, pi. 24, fig. 13. WHITFIELD, Paleontology 

 of New Jersey, Gastrop. and Ceph. Raritan Clays and Green Sand 

 Marls, p. 166, pi. 20, f. 19-24. 



Cretaceous : Lower Green Marls, Mullica Hill, and underlying 

 clays at Crosswicks and Haddonfield, N. J. 



D. SUBCYLINDRICUM Philippi, 1887. Tertiar. und Quartar. 

 Verstein. Chiles, p. 105, pi. 12, f. 14. 



Cretaceous, Algarroba and S. Vicente, Chili. 

 D. SUBPLANUM Pilsbry & Sharp, 1898, n. n. 



D. cylindricum GARDNER, 1878. Quart. Jnl. Geol. Soc. London, 

 1878, Vol. 34, p. 61, pi. iii, figs. 21-25. 



Cretaceous, Blackdown, England. 



This is not D. cylindricum of Sowerby, according to Gardner, /. c. 

 It may possibly be a Ditrupa, but in any case requires a new name. 



D. SUBQUADRATUM Meek, 1860. Proceed. Acad. Nat. Sci. Phila. 

 p. 311. 



Jurassic, North Platte River. 



D. TENUE Muenster, 1844. Goldfuss, Petrifac. German., Vol. iii, 

 p. 2, pi. 166, fig. 6. 



Jurassic, Pappenheim, Bavaria. 



D. TENUICOSTATUM Boehm, 1891. Palseontographica, Vol. 38, 

 p. 69, pi. ii, fig. 34a. 



Cretaceous, Gerhardtsreiter Graben, Bavaria. 

 D. TORQUATUM (Schlotheim), 1820. GUEMBEL, Geol. von. Bay- 

 ern. (3 Lief.), p. 669, 670, f. 19. 



Dentalites torquatus SCHL., Die Petrefactenkunde, p. 94. 

 D. tonosum ZENKER, 1837, in Geinitz, Beitr. Kennt. Thueringer 

 Musch. Gebr., pi. i, fig. 2. 



Triassic Muschelkalk, Germany. 



D. TURONIENSE Woods, 1896. Quart. Journ. Geol. Soc. Lond., 

 Vol. 52, p. 96, pi. iv, figs. 16-17. 



Cretaceous, Winchester, etc., England. 



