Foraminifera
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Foraminifera are single-celled organisms, members of a phylum or class of Rhizarian protists characterized by streaming granular ectoplasm for catching food and other uses; and commonly an external sh
Fossil nummulitid foraminiferans showing microspheric (larger) and megalospheric individuals (smaller); Eocene of the United Arab Emirates; scale in mm
Foraminiferan tests (ventral view)
The mysterious Paleodictyon has been interpreted as a fossil xenophyophore but this remains controversial.
Xenophyophorea
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Xenophyophorea is a clade of foraminiferans. Xenophyophores are multinucleate unicellular organisms found on the ocean floor throughout the world's oceans, at depths of 500 to 10,600 metres. They are
Xenophyophore NOAA
Xenophyophore
A large 20-cm wide xenophyophore