348 



CHALMER L. COOPER 



This specimen, like that of D. communis, 

 is of doubtful affinity and is questionably 

 referred to this species. 



Dentalia cf. D. PAUPERATA d'Orbignv 

 Plate 54, figure 10 



Dentalina pauper ata d'Orbigny, 1846, Foram. 

 Foss. Vienne, p. 46, pi. 1, figs. 57, 58.— Bourne- 

 mann, 1855, Zeit. deutsch. geol. Gesell., vol. 7, 

 p. 324, pi. 13, fig. 1 . — -Sherborn and Chapman, 

 1886, Roy. Micr. Soc. Jour., p. 750, pi. 15, 

 fig. 9. — Cushman, 1940, Cushman Lab. Foram. 

 Research Contr., vol. 16, p. 58, pi. 10, fig. 15; 

 Midway group, Paleocene, Alabama. 



Nodosaria pauperata, H. B. Brady, 1884, Chal- 

 lenger, vol. 9 (zool.), p. 500, text fig. 14. — 

 Chapman, 1893, Roy, Micr. Soc. Jour., p. 588, 

 pi. 8, fig. 32.— Cushman, 1913, U. S. Nat. 

 Mus. Bull. 71, pt. 3, p. 51, pi. 25, fig. 7.— 

 Halkyard, 1917, Proc. Manchester Lit. Phil. 

 Soc. Mem., vol. 62, no. 6, p. 71, pi. 4, figs. 8, 

 9.— Cushman, 1923, U. S. Nat. Mus. Bull. 104, 

 pt. 4, p. 72, pi. 14, fig. 13.— Plummer, 1927, 

 Texas Univ. Bull. 2644, p. 79, pi. 4, fig. 11; 

 Midway group, Paleocene, Texas. 



Test elongate, slightly tapered; chambers 

 slightly arcuate, short, wide; initial chamber 

 narrower, longer than those above, with ter- 

 minal spine; walls smooth; sutures fairly 

 prominent, transverse; average diameter, 

 0.33 mm. 



This long ranged species, abundant in the 

 Midway of Texas and Alabama, has no value 

 as a marker. 



Dentalina spira Cooper, n. sp. 

 Plate 54, figures 1, 2 



Chambers globular, almost spherical; sur- 

 face marked by 14 wide prominent ribs, 



some of which may not continue over entire 

 length of chamber, tapering and merging 

 with shell surface near sutures; somewhat 

 spiral in arrangement when viewed from 

 above; diameter, 1.25 mm.; height (one 

 chamber), 1.2 mm. 



D. spira does not appear to conform to 

 any known species of Dentalina in the char- 

 acter and spiral arrangement of the ribs. 



Genus Lagena Walker and Jacob 



Lagena laevis (Montagu) 



Plate 54, figures 6, 7 



Serpula {Lagena) laevis ovalis Walker and Boys, 

 1784, Test. Min. p. 3, pi. 1, fig. 9. 



Vermiculum laeve, Monta^^u, 1803, Test. Brit., 

 p. 524. 



Lagena laevis, Cushman, 1913, U. S. Nat. Mus. 

 Bull. 71, pt. 3, p. 5, pi. 1, fig. 3, pi. 38, fig. 5; 

 Recent, Pacific. — Howe, 1939, Louisiana Dept. 

 Cons. Geol. Bull. 14, p. 50, pi. 6, fig. 12; Clai- 

 borne group. Eocene, Louisiana. — Toulmin, 

 1941, Jour. Paleontology, vol. 15, p. 593, pi. 

 80, fig. 7; Salt Mountain limestone. Eocene, 

 Alabama. 



Test almost globular, slightly elliptical in 

 lateral view; neck cylindrical, set abruptly 

 on chamber; wall smooth; diameter 0.40 

 mm., length, probably 0.60-0.70 mm. 



Although not known from the Creta- 

 ceous, this species ranges throughout the 

 Tertiary. 



Genus Nodosaria Lamark 



Nodosaria latejugata Giimbel 



Plate 55, figures 24, 25 



Nodosaria latejugata Gumbel, 1870, K. bayer. 

 Akad. Wiss. Miinchen, CI. 2, Abh., vol. 10, 



Explanation of Plate 54 



Figs. 1, 2 — Dentalina spira Cooper, n. sp. 1, Sideview; 2, top view, X20. (p. 348) 

 3-5 — Anomalina acuta Plummer. 3, Ventral view; 4, peripheral view; 5, dorsal view, X90. 



(p. 353) 



6, 7 — Lagena laevis (Montagu). 6, Apertural view; 7, lateral view, X60. (p. 348) 



8, 9 — Globigerina compressa Plummer. 8, Ventral view; dorsal view, X90. (p. ZSV) 



10 — Dentalina cf. D. pauperata d'Orbigny, X90. (p. 348) 



11 — Nodosaria spinocostata Cooper, n. sp., X60. (p. 349) 



12, 13 — Globigerina triloculinoides Plummer, X90 (p. 353) 



14 — Siphogeneroides? eleganta Plummer, X90. (p. 351) 

 15-17 — Anomalina midwayensis (Plummer). 15, Dorsal view; i(5, peripheral view; 17, ventral 



view, X90. (p. 354) 



18, 19 — Ellipsonodosaria plummerae Cushman. X90. (p. 352) 



20 — Ellipsonodosaria spinulosa (Plummer). X90. (p. 352) 



21 — Dentalina cf. D. cooperensis Cushman. X90. (p. 347) 



22 — Ellipsonodosaria saginensis (Plummer). X90. (p. 352) 



23 — Ellipsonodosaria lepidula (Sch wager). X90. (p. 352) 



24, 25 — Cibicides alleni (Plummer). 24, Ventral view; 25, dorsal view. X60. (p. 354) 



26, 27 — Chrysaligonium granti (Plummer). X90. (p. 346) 



28, 29 — Cibicides vulgaris (Plummer). 28, Dorsal view; 29, ventral view. X60. (p. 354) 



