Deskripsieng
These lapilli have three pronounced angular-like points at the postero-mesial, antero-mesial, and antero-distal margins, making them appear triangular. Their antero-mesial projection (Amp) is subtle, and they have compact curved sulculus lapilli (Sl). Their mesial dents (Md) (the “ valleys ” along the outer rim of the mesial margin) are subtle, their mesial notch (Mn) is compressed, and they have deep incisura linea basalis (ILb).
Sumber: Otolith morphometric analysis of North Bornean Ariidae (Siluriformes): new insights and taxonomic implications