Fig. 4From: The pteropod species Heliconoides inflatus as an archive of late Pleistocene to Holocene environmental conditions on the Northwest Shelf of AustraliaOptical microscopy and SEM images of selected H. inflatus samples. (a) Most pteropods in the studied core material are very well preserved (LDX = 0), including lustrous and transparent shells (Site U1463; 12 ka). (b) The preservation of some shells from Site U1463 (6–8 ka) exhibits slight deterioration (LDX = 0–1). Single shells partly have an opaque milky white color or a cloudy appearance (white arrow) (Site U1463; 7 ka). (c) SEM image of a slightly corroded pteropod. The black square indicates the location of (d) (Site U1463; 7 ka). (d) Dissolution of a pteropod as evidenced by the rough surface of part of the shell (white arrow) (Site U1463; 7 ka)Back to article page