Abstract
Certain deposits in the neighbourhood of the Seberuang Eiver, a tributary of the Kapuas in Western Borneo, were described by E. Everwijn in 1854 as containing numerous so-called “Nummulites.” Similar organisms were obtained at a later date from the same district by Dr. F. Schneider, which were examined by Dr. K. Von Fritsch and proved to belong to the genus Patellina. Two new forms were described and figured under the names of P. scutum and P. Irochus, whilst the occurrence of Patellina itself suggested to Von Fritsch. the probability of the beds in question being of Cretaceous age.

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