testacean


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testacean

(tĕ-stā′shən)
n.
Any of various amoeboid protozoans having a hard external covering, found in soil and freshwater habitats.

tes·ta′cean adj.
References in periodicals archive ?
2008) revealed higher densities in the rainy season due to entrainment of testaceans from the sediment, but in the case of the waterfalls, this factor was only observed at Veu da Noiva, while at Cachoeirinha the correlation with the precipitation factor did not show a significant variation and at Salgadeira the correlation was negative.
52) He said there that testaceans occupy an intermediate position between animals and plants.
For this reason testaceans and mollusks and crustaceans (all of which are bloodless and have a cold physis) are especially generated in shallow parts of the sea and in river estuaries.
21, which was exclusively concerned with testaceans as a category of ensouled entities intermediate between plants and animals.
So Aristotle may be saying here that in the sea, (59) where one would only expect to find aquatic animals, testaceans develop too, which closely resemble plants (properly belonging on land).
On the generation of testaceans, see also Historia Animalium 5.