Family Limnogromiidae Holzmann and Siemensma, 2021
Diagnosis: Multinucleate agglutinated monothalamous foraminifera. Test cylindrical, flexible, extendible and pliable, encrusted with a large number of small siliceous particles. Aperture terminal or sub-terminal, straight or oblique. Peduncle lying in an internal tube formed by a hyaline peduncular sheath. Nuclei spherical, ovular, numerous, up to 200.
Molecular features: The partial SSU rDNA sequences of Limnogromiidae contain between 1015–1027 nucleotides, the GC content ranges from 46.3%–47.2%. Pairwise distances range from 0.015 to 0.025, the overall average is 0.009.
Type genus: Limnogromia Siemensma, Apothéloz-Perret-Gentil, Holzmann, Clauss, Völcker and Pawlowski, 2017.
Genus Limnogromia Siemensma, et al., 2017, improved diagnosis Siemensma et al., 2021.
Diagnosis: As for family.
Type species: Limnogromia sinensis
Including:
L. nigricans (Penard, 1902)
L. linearis (Penard, 1902)
L. saxicola (Penard, 1905)
Ecology: Freshwater, in organic sediment. China.