Testate amoebae (Protozoa: Rhizopoda) of Deepor Beel (a Ramsar site), Assam, northeastern India Author Sharma, B. K. Author Sharma, Sumita text Journal of Threatened Taxa 2011 2011-07-26 3 7 1947 1950 http://threatenedtaxa.org/index.php/JoTT/article/view/1210 journal article 10.11609/JoTT.o2664.1947-50 0974-7907 5032152 3. Arcella vulgaris Ehrenberg, 1830 Characters: Test light yellow, discoid or hemispherical in front or lateral views; height about half of its diameter; test surface with large areoles. Mouth circular and central. Distribution: India - Assam , Meghalaya , Manipur , Arunachal Pradesh , Nagaland , Sikkim , Himachal Pradesh and West Bengal .