[Proc. Roy. Soc. Victoria, 22 (N.S.), Pt. II., 1909.] 



Art. XX. — A Study of the Bates ford Lhnedoiy. 



By FREDERICK CHAPMAN, A.L.S., F.R.M.S., 



Palaeontologist to the National Museum. 



(With Plates LII.-LV.). 

 [Read 9th December, 1909.] 



Contents. 



General Description. — Description of the Foraminifera and 

 Ostracoda. — The Fauna of the Batesford Limestone. — Summary, 

 and Conclusions as to the Age of the Beds. 



General Description. 



Tlie limestones of the Batesford area are of a twofold 

 character. The basal portion of the series, formerly referred 

 to as ' Orbitoidal Limestone," is a true Lepidocyclina-Yook. 

 This rock, in its consolidated form, may be seen in the Upper 

 <^uarry, near Batesford, situated on the left bank of the Moora- 

 bool River, near the Dog Rocks, and df miles N.E. of Geelong 

 Railway Station. The stone of this Upper Quarry is almost 

 entirely composed of the tests of Lepidocyclina tournoueri, L. 

 marginata, and L. martini. As will be shown in the sequel, the 

 genus Lepidocyclina differs fundamentally from the Eocene genus 

 Orbitoides, and is, elsewhere, typically Miocene, although occa- 

 sionally found in the Oligocene. 



The limestone of the Upper Quarry is technically known as 

 "Moorabool Stone,'' and is occasionally used for building pur- 

 poses. It passes upwards into a friable limestone, comparable 

 to the polyzoal limestone of the Filter Quarries, which is over- 

 lain by a marly bed, and lastly covered by a great thickness of 

 basalt. Dr. T. S. Hall and Mr. G. B. Pritchard' who have 

 written a comprehensive account of the Tertiaries of the 



1 " Notes on the Lower Tertiaries of the Southern Portion of the Moorabool Valley. 

 Proc. Roy. Soc. Vict., vol. iv., pt. i., n.s., 1891, pp. 0-26. 



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