8 monografía geológica y paleontológica 



Craie Supérieure. — Mém. p. serv. ál'expL de la carie góoL dót. 



de la France. París 1894. 

 Ji-O Hanley, Sowerby, Thes. conch. III. — S. Hanley, Monograph of the fa- 



mily Nuculidae, formiug the Lamarckian genus Nucula. — En 



«Sowerby, Thesaiiras Conchyliorum,» tomo III, London, 1866. 

 Al Hauer, Ceph. d. GosauscJi. — Fr. v. Hauer, Ueber die Ceplialopodeu der 



Gosauschichten. — Beitr. z. Palaeontographie Oesterreicli-Un- 



garns. Wien 1858. 

 A2 Heilprin, Cret. Dep. of México. — A. Heilprin. — The geology and pa- 



laeontology of the Cretaceous deposita of México. Proc. Acad 



Nat. Sci. Philadelphia, 1890. 

 43 mil, Ohech list Cret. Inv. foss. — R. T. Hill, A preliminary anotated 



check list of theCretaceous in vertébrate fossils of Texas. — BuU. 



4, Geol. Surv. Texas. 1889. 

 4-4 mu, Oomanche Series. — R. T. Hill, the Comanche Series of theTexas- 



Arkansas región. Biill. Geol. Soc. America, vol 2, 1891. 



45 Hill, Pal. Trinity División — R. T. Hill, Paleontology of the cretaceous 



formations of Texas. — The invertebrate paleontology of the Tri- 

 nity División. — Proc. Biol. Soc. of Washington, tomo 8, 1893. 



46 Hill, Oretaceous formations o f México. -R. T. Hill, The cretaceous forma- 



tions of México and their relations to North American geogra- 

 phic development. — Am. Journ. of Science, vol. 45, 1893. 



47 Hill, Geol. Red River. — R. T. Hill, Geology of parts of Texas, Indian 



Territory and Arkansas ad jacent to Red River. — Bull. geol. Soc. 

 America, vol. 5, 1894, 



48 Hill, Outlying áreas Oomanche Ser. — R. T. Hill, Outlying áreas of the 



Comanche Series in Kansas, Oklahoma and New México. -Amer. 

 Journ. of Science, tomo 50, 1895. 



49 Hill, BlacTc and Grand Prairies. — R. T. Hill, Geography and Geology 



of the Black and Grand Prairies, Texas with detailed descrip- 

 tions of the Cretaceous Formations and special ref erence to Ar- 

 tesian Waters. 21st. Ann. Rep. U. S. Geol. Sur., 1899-1900, 

 parte VII, Washington, 1901. 



50 mu and Vaughan, Geol. of the Edwards Platean. — R. T. Hill and T. 



W. Vaughan, Geology of the Edwards Platean and Rio Grande 

 Plain adjacent, to Austin and San Antonio, Texas with referen- 

 ce to the ocurrence of underground waters. — 18th. Ann. Rep. 

 ü. S. Geol. Surv. 1896-97, parte II, Washington, 1898. 



51 Hill and Vaughan, loio. cret. Gryphaeas. — R. T. Hill and T. W. Vaug- 



han, The lower cretaceous Gryphaeas of the Texas region.-Bull. 

 U. S. geol. Surv. no. 151, Washington, 1891. 



52 Holzapfel, Aachener Kreide.-'E. Holzapfel, Die Mollusken der Aachener 



Kreide. I Palaeontographica, tomo 34, II ibid. tomo 35. 1887- 

 1889. 



