Useful links:
- Penard, 1902: Faune Rhizopodique du Bassin du Léman
- Penard Collection in Geneva
- Leidy, 1879: Fresh-Water Rhizopods of North America
- Cash and Hopkinson, 1905: The British Freswater Rhizopoda and Heliozoa I
- Cash and Hopkinson, 1909: The British Freswater Rhizopoda and Heliozoa II
- Cash, Wailes and Hopkinson, 1915: The British Freswater Rhizopoda and Heliozoa III
- Cash, Wailes and Hopkinson, 1919: The British Freswater Rhizopoda and Heliozoa IV
- Cash, Wailes and Hopkinson, 1919: The British Freswater Rhizopoda and Heliozoa V
- Carter, 1884
- Schaeffer, 1926 Taxonomy of the Amoebas
- Ehrenberg, 1930 Organisation, Systematik und geographisches Verhältniss der Infusionsthierchen
- Hertwig und Lesser, 1874: Ueber Rhizopoden und denselben nahestehende Organismen
- Biodiversity Heritage library, older papers and books, free downloads
- ISTAR International Society for Testate Amoeba Research
- NCBI-Genbank homepage
- Digital Key to Testate Amoebae (from McKweon et al., 2021)
- International Code of Zoological Nomenclature
- UNIEUK -Universal taxonomic framework and integrated reference gene databases for Eukaryotic biology, ecology, and evolution
- ION All names with first describer(s)
- Russian site with many illustrations and descriptions (in Russian; use Google translate!)
- Penard – The fascinating world of amoeboid organisms, Eckhard Voelcker and Steffen Clauss
- Tecamebas – A very informative website on testate amoebae in Brazil.
- German Gallery, Wolfgang Bettighofer
- Real Micro Life, Martin Kreutz
- It came from the pond, Bruce Taylor
- Canadian Nature Photographer, Robert Berdan
- Wonderful photomicrography, Charles Krebs
- German microscopy, forum
- Microscopy-UK
- Photomicro- and macrography, forum
- MicrobeHunter/
- Sea Plankton
- Descriptions of Protists – Nies, Japanese site
- Protists & Prokaryotes, John S. Douglas