THE 



GEOLOGICAL MAGAZINE 



NEW SERIES. DECADE VI. VOL. I. 



No. VIL— JULY, 1914. 



♦ 



I. — Thk Foraminifera of the Speeton Clay ok Yorkshire. 



By E. L. Sherlock, D.Sc, A.K.C.Sc, F.G.S. 



(PLATE XIX.) 



(Concluded from the June Number, j). 265.) 



Family ROTALIID^. 



Sub-family llOTALIIN^. 



PuLViNULiNA, Parker & Jones. 



Pulvimdina repanda (Fichtel & Moll). (PI. XIX, Fig. 14.) 



Nmitilus repandus, Fichtel & Moll, 1803 : Test. Micr., p. 35, pi. iii, figs, a, d. 

 Pulvinulina repanda, Brady, 1884: Chall. Eep., vol. ix, p. 684, pi. civ, 

 figs. 18a-c. 



Remarks. — This species is recorded from the Tertiary formations of 

 Italy by Parker & Jones and Seguenza, and is still living. Usually 

 it occurs at depths less than 200 fathoms, but is known from 

 1,000 fathoms (Brady). 



Horizon. — Found in B base c. Two specimens. 



Pulvinulina caracolla (E-oemer). (PI. XIX, Fig. 15.) 



Gjiroidina caracolla, Eoemer, 1840-1 : Verst. n. d. Kreide, p. 97, pi. xv, fig. 22. 

 Eotalia caracolla, Eeuss, 1862 : Sitzungsb. d. k. Ak. Wiss. Wien, vol. xlvi, 



p. 84, pi. X, fig. 6. 

 I'lilvinulina caracolla. Chapman, 1897: Journ. Eoy. Micr. See, p. 7, pi. i, 



figs. 9a-c. 



Remarks. — Tlie species is recorded from the Jurassic (Crick and 

 Sherborn, Journ. Northants. Nat. Hist. Soc, vol. vii, p. 71, pi. vii (ii), 

 ligs. 26«-c, 1892) and from the Middle Hils and Speeton Clay 

 of North Germany by Reuss. It is unknown in the Tertiary 

 formation. 



This is the most abundant species in the Speeton Clay of Yorkshire 

 and the only Foraminifer that has been previously recorded from it. 

 There are specimens named by Rupert Jones in the British Museum 

 and the Museum of Practical Geology. Mr. Lamplugh refers to the 

 occurrence of Foraminifera cemented together in small hard pellets 

 (Q.J.G.S., vol. xlv, p. 596, 1889). 



The numerous specimens show a considerable amount of variation. 

 Some have the inferior surface greatly produced into a cone (PI. XIX, 

 Figs. \ba, h) with a mass of callus at the apex of the cone. The septa 

 are very thick and the upper surface of the cells relatively thin, so 

 that, when waterworn, a curious mulberry-like form is produced. 

 Practically all the shells are more or less broken, and some of the 

 specimens show the mode of arrangement of the earliest formed 



DECADE VI. — VOL. I. — NO. VII. 19 



