﻿580 BULLETIN 103, UNITED STATES NATIONAL MUSEUM. 



deposits are of Eocene orOligoccno ago. Aiirelius Todd collected at 

 Tumbala, Chiapas, station 6403 U.S.N.M. register, Lejndocyclina in 

 quantity and a Nummulites possibly allied to a species described by 

 Cushman from St. Bartholomuw. Cushman says, " I should say that 

 the material represents a lower Oligocene horizon." 



LejndocycUna and other Foraminifera that appears to be num- 

 mulitic were obtained by P. C. Steward and C. W. Washburne 500 

 meters southeast of Pocero, 8 leagues southwest of Ozuluama, Vera 

 Cruz, Mexico, station 5462 U.S.N.M. register. Doctor Cushman 

 says that at best some of this material is from strata of Oligoceno 

 age, but he does not express an opinion as to what part of the Oligo- 

 cene it represents. 



Lower Oligocene deposits probably occur in eastern Mexico, north 

 of the Tamaulipas Range, for Dumble reports a Pecien recalling 

 Pecien poulsoni Morton, specimens identified by Doctor Dall.* South 

 of that range, the same author records " Orlnioides papyracea, Crisiel- 

 laria, and Nummulites, from the Buena Vista to the Tancochin at 

 Cerro del Oro." ^ The paloontologic evidence is indecisive, for tho 

 ^' Orhiioides papyracea" is certainly misidentified; but the specimens 

 probably represent a large species of Lepidocyclina, of the kind 

 abundant in the lower Oligocene and upper Eocene of the south- 

 eastern United States and in the middle Ohgoceno of Antigua and 

 Georgia. The deposits from which the Foraminifera were obtained 

 may be of upper Eocene or of upper or middle Oligocene age, but the* 

 probability is that they are lower Oligocene in age. 



No marine Oligoceno deposits are known in the State of Texas. 

 Berry reports Palmoxylon iexense Stenzel, from 5 miles north of Jasper, 

 Texas, from "beds of Vicksburg age," ^ and states that "Unstudied 

 material indicates the probable presence of this species at sevtsral 

 localities in tho Catahoula sandstone of Texas and in the Vicksburg 

 limestone of Alabama." There is marine lower Oligocene in Louisiana 

 at Rosefield, near Washita River; and east of Mississippi River it 

 outcrops in a belt running from Vicksburg eastward to Georgia and 

 Florida. 



Marino deposits in Cuba have been questionably referred to tho 

 lower Oligocene, but a definite opinion must be withheld until Doctor 

 Cushman has completed his study of the Cuban orbitoid Foraminifera. 



The geologic formation in Jamaica to which Hill applied tho 

 name Montpelier white limestone* contains many Foraminifera, 



» Durable, E. T., Tertiary deposits of northeastern Mexico, California Acad. Sci. Proc, ser. 4, vol. 5, p. 

 1S8, 1915. 



« Dumble, E. T., Some events in the Eocene history of the present coastal area of the Gulf of Mexico in 

 Texas and Mexico, Journ. Geol., vol. 23, No. 6, p. 496, 1915. 



8 Berry, E. W., The flora of the Catahoula satndstono, U. S. Geol. Survey Prof. Paper 98 (M), pp. 235, 

 238, pi. 56, 1916. 



« Hill, R. T., The geology and physical geography of Jamaica, Mus. Comp. Zool. Bull., vol. 34, pp. 

 137-144, 1899. 



