Microworld

world of amoeboid organisms

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What is Microworld?

Microworld offers an introduction to the fascinating world of amoeboid organisms. Here you can find a series of my observations, recorded in both drawings and more than 9.700 photomicrographs and videos. It is also a database in progress, with descriptions of over 1900 species, and more information will be added on a continuing basis. Although we live in a time of extraordinary advances in the biological sciences, we still do not know much about free-living amoebae in the field. When you start studying amoebae, their world might look quite clear and they seem easy to identify. However, the more you see and learn, the more you will doubt, because many older descriptions of species are vague, incomplete or inadequate. The menu structure reflects modern taxonomy, though this is not an easy approach for a beginner. You will also find keys, both dichotomous and visualized, to help with the identification. Please feel free to contact me if you have comments or questions.

Citing Microworld

Cite Microworld as: Siemensma, F. J., Microworld, world of amoeboid organisms. World-wide electronic publication, Kortenhoef, the Netherlands. Searched on February 26, 2021.

Copyright

All images on Microworld are my property unless otherwise stated. Any copying or download of these images by any means for commercial or non-commercial use without my written permission or the permission of the copyright owner is illegal.
© Ferry J. Siemensma

Recent posts

Actinosphaeridium spec.

Actinosphaeridium spec. Actinosphaeridium spec. Diagnosis: Cell surrounded by a kind of membranous shell. Filopodia with granules, sometimes branching. Cell not stalked, at least not observed.

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Euglyphidion

Euglyphidion enigmaticum – after Bonnet, 1960 Genus Euglyphidion Bonnet, 196 Diagnosis: Shell hyaline, ovoid, pseudostome circular or slightly elliptical. Shell loosely covered with two types of

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Leptomyxa spec.

Leptomyxa sp., slowly retracting in response to the light of the microscope Leptomyxa sp. Diagnose: This is a very large amoeba which I found in

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Zivkovicia spec.

Zivkovicia spec., 200 µm long; the right image is viewed through the aperture Zivkovicia spec.  Diagnosis: Shell pyriform, circular in oral view, with a clear

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Pontigulasia pentangulostoma

P. pentangulostoma, after Quin et al., 2008 Pontigulasia pentangulostoma Quin et al., 2008 Diagnosis: Shell is brown, laterally uncompressed, parted to neck and body regions

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Flabellula citata

Flabellula citata, from Dykova et al., 2008 Flabellula citata Schaeffer, 1926 Diagnosis: Length in locomotion 15-75 µm; width 25-55 µm. Shape very variable, from a

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