Arcella

Arcella is a genus of testate amoebae or Arcellinida, usually found in freshwaters and mosses, and rarely in soils. A key characteristic of Arcella is the circular test with a hole on its center from where finger-like pseudopods emerge. It is one of the largest testacean genera. ==Anatomy== An Arcella is typically enclosed in a chitinous, umbrella...
Found on http://en.wikipedia.org/wiki/Arcella

Arcella

(from the article `testacean`) ...soil. The test has an underlying membrane of chitinous material that is similar to an insect`s exoskeleton. The outer layer may be a brownish ...
Found on http://www.britannica.com/eb/a-z/a/95

arcella

[n] - an amoeba-like protozoan with a chitinous shell resembling an umbrella
Found on http://www.webdictionary.co.uk/definition.php?query=arcella

arcella

noun an amoeba-like protozoan with a chitinous shell resembling an umbrella
Found on http://wordnetweb.princeton.edu/perl/webwn?s=arcella

Arcella

[Padua] Arcella is the name of a district in Padua, located close to the Milan-Venice railway, north-east of the station. However, the urban expansion occurred since the 1950s made the bounds between the localities nearby imperceptible. People usually use the name `Arcella` to refer to the whole urban area north of the station. ...
Found on http://en.wikipedia.org/wiki/Arcella_(Padua)
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