Русский: Панцирь ископаемой диатомовой водоросли Stephanopyxis grunowii Grove & Sturt 1883, вид снизу. Диатомиты из Oamaru, Troublesome Gully. Возраст диатомитов около 40 млн. лет.
Световая микроскопия, светлое поле в проходящем свете, использован мультифокусный стекинг.
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