TERTIARY AND QUATERNARY PALEONTOLOGY, NORTHEASTERN FLORIDA 3 I 
between the two formations and the determination of the limits of the 
southward migration of the species from the ‘Waccamaw’ fauna. 
“Structure: —The Nashua marl is exposed at only a few localities in 
the St. Johns Valley and it is difficult to form any definite idea concern¬ 
ing its structure. It has probably been subjected to the same deformation 
as the Caloosahatchee marl, but the isolated exposures afford no oppor¬ 
tunity to observe evidences of folding. The dip is doubtless seaward 
and it is probably very slight. 
“Local Details :—In the St. Johns Valley there are a number of 
exposures of the Pliocene marl which have been designated the Nashua 
marl. At the type locality, one-fourth mile south of Nashua, Putnam 
County, there is an exposure of five feet of white sand, resting uncon- 
formably upon about fifteen feet of white shell marl. . . 
LISTS OF SPECIES FROM THE NASHUA MARL 
4865.—A quarter of a mile south of Nashua, Putnam Co., Fla. (Type 
locality of the Nashua marl). (See Matson, G. C., and Clapp, 
F. G., Fla. Geol. Survey, 2nd Ann. Rep’t p. 130, 1909.) 
Approved or Changed. 
Terebra protexta (Conrad), not found. 
Terebra dislocata (Say). 
Terebra concava (Say), var. (?) 
Conus marylandicus Green. 
Oliva literata Lam’k. 
Olivella mutica (Say). 
Marginella limatula Conrad. 
Marginella cf. M. floridana Dali. 
Busycon maximum Conrad (?) (yo.). 
Eupleura miocenica, var. near intermedia 
Dali. 
Urosalpinx, near perrugatus Conrad. 
Uyanassa porcina (Say), var. (?) 
Ilyanassa isogramma Dali (?) 
Ilyanassa granifera, var. sexdentata 
Conrad. 
Ilyanassa porcina (Say), var. 
Anachis avara, var. translirata Ravenel. 
Turbonilla. 
Eulima. 
Cerithiopsis greeni C. B. Ads. 
Crucibulum cf. C. auricula Gmelin (yo.). 
Crepidula convexa Say, (?) (yo.). 
Natica pusilla Say (?). 
Littorina irrorata (Say). 
Dentalium, near D. carolinense Conrad. 
Area (Noetia) limula, var. platyura 
Dali. 
Original. 
Terebra protexta Conrad. 
Terebra dislocata Say. 
Terebra concava Say. 
Conus marylandicus Green. 
Oliva literata Lamk. 
Olivella mutica Say. 
Marginella pardalis Dali. 
Voiutella amiantula Dali. 
Fulgur maximum Conrad. 
Eupleura miocenica var. intermedia 
Dali. 
Murex pomum Linn. 
Ilyanassa porcina Say. 
Ilyanassa isogramma Dali. 
Ilyanassa granifera Conrad. 
Nassa scalaspira Dali. 
Anachis avara var. caloosaensis Dali. 
Turbonilla. 
Eulima. 
Cerithiopsis greeni C. B. Ads. 
Crucibulum auricula Gmelin. 
Crepidula convexa Say. 
Natica (Cryptonatica) pusilla Say. 
Littorina irrorata Say. 
Dentalium carolinense Conrad. 
Area (Noetia) limula, var. platyura 
Dali. 
