|   N. simplex
 33-80 x 17-30 μm
 Higashi-hiroshima
 Hiroshima, 1998
 
 |   N. simplex
 9-14 μm φ
 Uruguay, 1999
 |   N. simplex ?
 20 μm φ
 Kodanuki marsh
 Fujinomiya
 Shizuoka, 2005
 | 
|   N. radians ?
 or N. simplex ?
 20-25 μm φ
 Senjo-ga-hara
 Nikko
 Tochigi, 2003
 |   N. radians ?
 or N. simplex ?
 μm φ
 Kawagoe
 Saitama, 2001
 |   N. radians ?
 or N. simplex ?
 20 μm φ
 Japan, 1998
 |   N. radians
 50 x 35 μm
 Eikan-ji
 Kyoto, 2000
 | 
|   N. radians
 17 μm φ
 Kamiya Park
 Konosu
 Saitama, 2003
 |   N. radians
 10-14 μm φ
 Japan, 1998
 |   N. radians
 35 μm φ
 Ogose
 Saitama, 2003
 |   N. radians
 21-24 μm φ
 Japan, 1998
 | 
|   N. radians
 22 μm φ
 Japan, 1998
 |   N. radians
 25 μm φ
 Omine-numa
 Tsukiyono
 Gunma, 2003
 |   N. radians ?
 55 μm φ
 Konpira bridge
 Shirakawa
 Fukushima, 2003
 |   N. radians ?
 μm φ
 Japan, 1999
 | 
|   N. radians ?
 μm φ
 Saitama, 1999
 |   N. radians ?
 cysts
 Kawashima
 Saitama, 2002
 | 
|   N. delicatula
 53 μm φ
 Watarase river
 Ashikaga
 Tochigi, 2004
 |   N. delicatula ?
 25 μm φ
 Inari Park
 Toyama, 2002
 |   N. delicatula
 25 x 35 μm
 Iruma river
 Sayama
 Saitama, 2004
 |   N. delicatula
 27-30 μm φ
 Shinobazu-ike
 Ueno
 Tokyo, 2001
 | 
|   Nuclearia sp.
 N. moebiusi ?
 μm φ
 Japan, 199?
 |   Nuclearia ?
 or other genus ?
 μm φ
 Kawagoe
 Saitama, 2001
 |   Nuclearia sp.
 or other genus ?
 with 4 filaments
 Torinome Kasen p.
 NasuShiobara
 Tochigi, 2008
 
  |