Lepidodendron.--McCoy, F. Prod. Pal. Vict., Dec. I. 1874, p. 37. Etheridge, R. jnr. Rec. Geol. Surv, New South Wales, vol. II., pt. 3, 1891, p. 119. Idem, Geol. and Pal. Queensland, 1892, p. 196. Carboniferous Fungi.--Etheridge, R. jnr. Geol. Surv. W.A., Bull, No. 10, 1903, pp. 25-31. Carboniferous Ferns.--Dun, W. S. Rec. Geol. Surv. New South Wales, vol. VIII. pt. 2, 1905, pp. 157-161, pls. XXII. and XXIII. Glossopteris.--Feistmantel, O. Mem. Geol. Surv. New South Wales, Pal. No. 3, 1890. Arber, N. Cat. Foss. Plants, Glossopteris Flora, Brit. Mus., 1905. Gangamopteris.--McCoy, F. Prod. Pal. Vict., Dec. II. 1875, p. 11. Jurassic Plants.--McCoy, F. Prod. Pal. Vic., Dec. II. 1875, p. 15. Woods, T. Proc. Linn. Soc. New South Wales, vol. VIII. pt. I. 1883, p. 37. Etheridge, R. jnr. Geol. Pal. Queensland, 1892, p. 314. Dun, W. S. (Taeniopteris), Rep. Austr. Asso. Adv. Sci., Sydney, 1898, pp. 384-400. Seward, A. C. Rec. Geol. Surv. Vic., vol. I. pt. 3, 1904; Chapman, F. Ibid., vol II. pt. 4, 1908; vol. III., pt. 1, 1909. Dun, W. S. Rec. Geol. Surv. New South Wales, vol. VIII. pt. 4, 1909, p. 311. Older Cainozoic Plants.--McCoy, F. Prod. Pal. Vic., Dec. IV. 1876, p. 31. Ettingshausen, C. von. Mem. Geol. Surv. New South Wales, Pal. No. 2, 1888. Idem, Trans. New Zealand Inst., vol. XXIII. (1890), 1891, p. 237. Deane, H. Rec. Geol. Surv. Vict., vol. I. pt. 1, 1902, pp. 15, 20. Lower Pliocene Deep Leads.--McCoy, F. Prod. Pal. Vict., Dec. IV. 1876, p. 29. Mueller, F. von. Geol. Surv. Vic., New Veg. Foss., 1874 and 1883. Pleistocene and other Diatom Earths.--Card, G. W. and Dun, W. S., Rec. Geol. Surv. New South Wales, vol. V. pt. 3, 1897, p. 128. CHAPTER VI. FOSSIL FORAMINIFERA AND RADIOLARIA. =Protozoans, Their Structure.--= The animals forming the sub-kingdom PROTOZOA ("lowliest animals"), are unicellular (one-celled), as distinguished from all the succeeding higher groups, which are known as the METAZOA ("animals beyond"). The former group, Protozoa, have all their functions performed by means of a simple cell, any additions to the cell-unit merely forming a repetitional or aggregated cell-structure. A familiar example of such occurs in pond-life, in the Amoeba, a form which is not found fossilised on account of the absence of any hard parts or covering capable of preservation. Foraminifera and Radiolaria, however, have such hard parts, and are frequently found fossilised. =Foraminifera: Their Habitats.--=