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 8.700 photomicrographs and videos. It is also a database in progress, with descriptions of over 1700 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 September 26, 2020.
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

Penardochlamys arcelloides

P. arcelloides – after Penard, 1904 Penardochlamys arcelloides  (Penard, 1904) Deflandre, 1953 Diagnosis: Colorless or very slightly yellowish envelope, bag or cauldron-shaped, very thin, chitinous,

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Haplomyxa spec

Fig. 1: Main cell body of specimen A, partly hidden by debris Haplomyxa sp. Three specimens were observed in a Petri dish, along with two

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Lachmannia spec.

“Lachmannia” spec., body length 127 µm “Lachmannia” spec. I found two cells, size about 125 µm when ovoid, with an organic-walled membranous test and a

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Diplophrys spec. 7

Diplophrys spec., with three tufts of filopodia Diplophrys spec. These cells are granular, never seen before. I found them in a sample from the Bert

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Psammonobiotus spec.

I found this specimen in a sample from the Oppad, near Hilversum, 2020. It is similar to Psammonobiotus linearis, but lacks a clear spine at

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Sphenoderia compressa

Sphenoderia compressa, after Badewitz, 2002 Sphenoderia compressa Badewitz, 2002 Diagnosis: Test ovoid, oval in cross section, hyaline, covered with relatively small, oval, rather irregularly arranged

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