RELATIONSHIPS OP THE AUSTRALIAN CAINOZOIC SYSTEM. 
that Douville has pointed out* * * § that the Lepidocyclinae fall into two 
groups : — 1st. The L. dilatata group, in which the vertical pillars are 
small and uniformly distributed over the shell, the test being 
typically large, as L. cha peri. L. insulae-natalis, L. verbeeki, and L. 
elephantina. 2nd. The L. marginata group, in which the pillars are 
more or less developed, but always more crowded towards the centre 
of the test, as L. raulini , L. morgani , L. towrnoueri, L. submarginata, 
and L. sumatrensis. 
The beds in Borneo, Italy and Panama (San Juan), characterized 
by the first group, that of L. dilatata, belong to the Aquitanian stage. 
The beds in Borneo, the south of France and Panama containing 
those of the second, L. marginata group, belong to the Burdigalian 
stage. f 
The distribution of the Victorian forms of Lepidocyclina may 
best be shown by the following schedule : — 
Victorian Localities. 
Species. 
Bods elsewhere. 
Batesford . . 
L. tournouen, L. marginata, 
Burdigalian of southern 
L. martini 
Europe 
Keilor 
L. tournouen, L. verbeeki . . 
Gaj Beds of India ; Upper 
Aquitanian, S. of Europe ; 
L. insulae-natalis Beds of 
Christmas Id. 
Clifton Bank, Muddy 
L. verbeeki 
Lower Aquitanian 
Creek 
F. Sacco has studied the faunas containing Lepidocyclina and 
Miogypsina with especial regard to the Tertiary basin of 1 iedmont, 
Italy ; and, although he differs from Douville and Prcver with 
reference to the precise horizon of L. marginata in that aiea, yet that 
question does not affect our present conclusions. M. Sacco fixes 
the L. marginata beds as Aquitanian (but Miocene), whilst Douville 
and Prever place them in the Burdigalian (still Miocene). The 
succession remains the same, and the periods follow suit. It is thus 
merely a local adjustment of terms. J . 
Prof. A. Silvestri, in his “ Distribuzione Geografica e Gcologica 
due Lepidocicline communi nel Terziario Italiano, § cites 
the occurrence of both L. dilatata and L. tournouen in the 
Priabonian (Oligocene) in Italy and Greece, and their recurrence 
in Italy in the Miocene. In the former instance those species are 
associated with more archaic forms, as the striated nummuhtes 
and Chapmania, which, however, are absent from the Australian 
Tertiaries. 
* Bull. StK*> Geol. Prance, ser. 4, vol. vu., 1907, p. 57. ,, r , andn 455 
t H. Douville. Bull. Soc. Geol. France, ser. 4, vol. v. 190o, p. 4o4 Uble), and P- 450. 
{ “ Sur la Valeur Stratigraphique des Lepidocyclina et des Miogypsina. Bull. Soc. Geol. 
France, ser. 4, vol. v., 1906, p. 882. . inn nn 54 55 
§ Mem. Pont. Accad. Rom. dei Nuovi Lincei, vol. xxix., 19U, PP- 
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