20, 2 Dickerson: Review of Philippine Paleontology 205 
stratigraphically associated with sandstones and shales which 
have yielded a typical Vigo fauna. The best region for the study 
of this facies is in Cebu Island, where the limestone which 
overlies the coal at Danao has yielded several species of these 
interesting and important unicellular forms. According to 
Douvillé,*® these beds represent the middle horizon. Douvillé 
states that the study of Foraminifera permits him to make the 
following subdivisions: 
I. The lower lignitic horizon is characterized by the association 
of genera Nummulites and Lepidocyclina. 
II. The middle horizon is characterized by the abundance of 
Lepidocyclina and the presence of Alveolina. 
III. The upper horizon has an abundance of small Lepidocy- 
clina and Miogypsina. Douvillé states that this same succession 
occurs in Borneo and Indo-Asia. He correlates the lower horizon 
with the Stampian, Oligocene; the middle, with the Aquitanian, 
Lower Miocene; the upper, with the Burdigalian, Miocene. In 
a footnote Douvillé states that in conformity with recent work 
the limit between the Oligocene and the Miocene, or between the 
Kogene and the Neocene, is placed between the Stampian and 
Aquitanian, properly limited. Douvillé’s conclusions, trans- 
lated by Mrs. G. B. Moody and Mrs. R. E. Dickerson, are as 
follows: 
From the preceding study the writer is enabled to classify the described 
beds in the following manner: 
Eogene (comprising the Eocene and the Oligocene), Stampian Stage. 
Limestone of Caracaran (Island of Batan, locality 2). 
This is a bluish gray limestone upon which the Foraminifera stand out 
in black; it is a part of the lignitic horizon and is intercalated between 
beds of lignite. 
The thin plates and polished sections show a small species of Nummu- 
lites 2.7 millimeters in diameter which appears to correspond to N. niasi 
Verbeek; but this last species is microspheric while that of the Philippines 
is macrospheric, and has been distinguished as N. subniasi. This same 
limestone also yields Polystomella sp. and a curious Lepidocyclina belonging 
in the section Neophrolepidina, L. smithi, which resembles certain varieties 
of L. proemarginata. 
The coexistence of Nummulites and Lepidocyclina characterize the Stam- 
Pian; it is noteworthy that these two genera are not represented here 
except by forms of very small size, although a little farther south in 
Borneo the large forms are abundant. 
II. Neocene (Aquitanian, Burdigalian, Helvetian) Aquitanian Stage. 
Ist. The soft yellowish sandstone of Sibul Gulch (old Alpaco mine, 
Island of Cebu, locality 273). The sandstone is incoherent and but slightly 
” Douvillé, H., Les Foraminiféres dans le Tertiaire des Philippines, Philip. 
Journ. Sci. § D 6 (1911) 54. 
