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![](https://i.seadn.io/s/raw/files/d766e3cdc233f2e52ae0e760ab9adadf.jpg?auto=format&dpr=1&w=1000)
Some single-celled plankton have skeletons formed from silicon sulphate and strontium sulphate. These may form glassy geological strata in time. The glassy shapes in this sample are the skeletons of Radiolaria, also related distantly to freshwater amoeba.
Image Quest (1978)
Nikon F2 | Custom Optics | Kodachrome 64
Some single-celled plankton have skeletons formed from silicon sulphate and strontium sulphate. These may form glassy geological strata in time. The glassy shapes in this sample are the skeletons of Radiolaria, also related distantly to freshwater amoeba.
Image Quest (1978)
Nikon F2 | Custom Optics | Kodachrome 64