Description of Paramphitrema
provided by BioPedia
Shell elliptical, compressed with two apertures at opposite poles more or less ending in two tubes. Two types of filopodia either thin and branching or thick with only one per pseudostome during rapid locomotion. Shell elliptical, compressed, two apertures at opposite poles, tubes usually long sometimes with terminal collar, deformable during feeding. Test insoluble in concentrated hydrochloric acid, covered with small mineral particles. Plasma fills the shell completely, bright granules and rusty brown pigment from the ingested diatoms. Ecology: marine and freshwater, algivore. Three species; Type species: Paramphitrema pontica Valkanov, 1970, two of the species have been originally assigned to Amphitrema (Penard, 1903).
