Tubulinea

Trichospaherium is a marine amoeba that can occur in a spicule-covered form or as a naked form - as is illustrated here. the cone-shaped pseudopodia with terminal filaments are distinctive.

The lateral view shows an elliptical profile whereas the shape is circular in topview. Pseudopods appear as tapered protuberances of protoplasma. The aperture is almost as wide as the shell diameter, the rim is visible. Dimensions of specimen: 15µm x 20 µm  Sample from a pond on the island of Hiddensee (Baltic Sea, Germany). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.

Portrait of Netzelia tuberculata (Wallich,1864) test. The test or shell is composed of quartz particles arranged in small knob-like aggregates on its surface. The approximately circular shell aperture has a narrow collar of quartz particles. Pseudopodia (not seen in this image) are lobose. Collected from freshwater irrigation canal near Boise, Idaho in November 2003. Brightfield illumination.

[taxonomy:genus=Polychaos] Protoplasmic streaming and deformation of a large amoeba. New outgrowths of cytoplasm begin as small spherical blebs that rapidly enlarge and sprout off blebs of their own. Overall the shape is straight and more or less cylindrical, save for the blebbing. Instead of forking, new branches are formed by streaming some cytoplasm back to the rear of the amoeba and blebbing a new growth outwards from there, resulting in a radial shape.

Trichosphaerium sieboldi.

Amoeba sp..

Ribadelago de Franco, Castille and Leon, Spain

Neila, Castille and Leon, Spain

Lumbreras, La Rioja, Spain

Ajamil, La Rioja, Spain

Ribadelago de Franco, Castille and Leon, Spain

Ribadelago de Franco, Castilla y Len, Espaa

Ribadelago de Franco, Castille and Leon, Spain

Villoslada de Cameros, La Rioja, Spain

This testate amoeba was collected at Hawley Bog, Charlemont, MA, USA (N 42.583, W -72.883) on April 7, 2010. This image was taken by Dan Lahr working with Dr. Laura Katz at Smith College.

Villoslada de Cameros, La Rioja, Spain

Riopar, Castille la Mancha, Spain

Talamanca, Catalunya, Espaa

Villoslada de Cameros, La Rioja, Spain

San Martin De Castaneda, Castille and Leon, Spain

Galende, Castille and Leon, Spain

This testate amoeba was collected at Hawley Bog, Charlemont, MA, USA (N 42.583, W -72.883) Fall, 2012. This image was taken by Angela Oliverio working with Dr. Laura Katz at Smith College.

Canencia, Comunidad de Madrid, Espaa