The schematic drawing of type of pectinate chaetae present in Marphysa from Terengganu A thin, narrow isodont with short and slender inner teeth (type 1) B thin, wide isodont with short and slender inner teeth (type 2) C thin, narrow heterodont with short and slender inner teeth (type 3) D thick, wide isodont with short and slender inner teeth (type 4) E thick, wide isodont with short and slender inner teeth (type 5) F thick, narrow anodont with long and thick inner teeth (type 6) G thick, wide anodont with long and slender inner teeth (type 7) H thick, wide anodont with long and thick inner teeth (type 8). Scale bars: 18 µm (A); 35 µm (B, G); 20 µm (C); 38 µm (D); 32 µm (E); 13 µm (F); 30 µm (H).