STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Foraminiferan test, coloured electron micrograph (SEM) of the high power detail of the test of a Miliolid. The Miliolida are an order of protists which comprise Foraminifera with calcareous, porcelacous (porcelain like) tests that are imperforate (without an opening) and commonly have a pseudochitinous lining. Tests are composed of randomly oriented calcite needles that have a high proportion of magnesium along with organic material. Tests lack pores and generally have multiple chambers. Magnification: x3000 when printed at 10 centimetres wide.
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