Order: Like choanoflagellates, but second trailing flagellum attaches to base of lorica; colars indistinct, rudimentary (How to know the protozoa, 1979).
Genus: With vase-like lorica; body small, ovoid with rudimentary collar, a flagellum extending through it; protoplasmic body anchored to base by a contractile filament (Kudo, 1966).
Subgenus (Poteriodendron): sessile, colonial.
->> Description at WPRNO Google Image Search
B. petiolata
3 samples
Japan, 199?
Bicoeca
Kaga
Ishikawa, 2000
Bicoeca
or Stokesiella ?
Japan, 1998
Bicoeca
Numappara marsh
Kuroiso
Tochigi, 2003
Bicoeca ?
or Coanoflagellate ?
O-ike park
Yabuki
Fukushima, 2003
