Genus: Test variable, chitinoid; binucleate (Illustrated Guide, 1985).
Group: Discoides (Test flattened; height < 1/2 greatest diam.)
Species:
->> Description at WPRNO Google Image Search
Group: Altoides (Test taller than greatest diam.)
A. dentata
155 x 145 μm
14 spines ?
Senjo-ga-hara
Nikko
Tochigi, 2003
A. dentata
130 μm
11 spines ?
near Lake Aoki
Omachi
Nagano, 2006
A. dentata
μm
10 spines
Kashiwa v.m.p.
Kashiwa
Chiba, 2008
A. dentata
125,140 x μm
10,14 spines ?
Onnenai
Kushiro marsh
Hokkaido, 2005
A. dentata
125 x 115 μm
8 spines ?
Akebono marsh
Tsuchiyu-onsen
Fukushima, 2005
A. dentata ?
140 μm
spines ?
Kawaguchi Natural p.
Kawaguchi
Kawaguchi, 2005
