world of amoeboid organisms

Menu
Argynnia dentistoma
Argynnia dentistoma, 117 µm long – Tirol, Austria

Genus Argynnia Vucetich, 1974

Diagnosis: Shell compressed, aperture surrounded by siliceous plates, giving it a rough outline. Shell greyish, composed of various euglyphid plates, mixed with diatom fragments and mineral particles, porous cement. The structure of the test is intermediate between Nebela and Difflugia. Nucleus: ovular.

Type species: Argynnia schwabei.

Remarks: This genus was proposed by Jung (1942b) without type designation and validated by Vucetich (1974) including only three species from the southern hemisphere.

Its taxonomic position within Hyalosphenidae or even Difflugina is questionable.

Argynnia dentistoma
Argynnia dentistoma, 117 µm long, with apertural scales
Recent posts

Velamentofex

Velamentofex tyrolensis Family Velamentofexidae Völcker and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to pyriform, usually surrounded by a broad layer of mucus-like

Read More »

Claparedellus lachmannii

Claparedellus lachmannii, common shape (Riedensee) Claparedellus lachmannii  Khanipour Roshan and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to elongated pyriform or irregularly shaped, with a

Read More »

Claparedellus

Claparedellus lachmannii Genus Claparedellus Khanipour Roshan and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to elongated pyriform or irregularly shaped, with a hyaline, flexible,

Read More »

Reticulomyxa spec

Main cell body is embedded in debris Reticulomyxa sp.? I found this naked foraminifer in material scratched from submerged rocks at the base of the

Read More »

Edaphoallogromiidae

Edaphoallogromia australica Family Edaphoallogromiidae Siemensma, Holzmann, Apothéloz-Perret-Gentil, Clauß, Voelcker, Bettighofer, Khanipour Roshan, Walden, Dumack and Pawlowski, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera with a spherical

Read More »

Lieberkuehnia spec.

Lieberkuehnia spec., body length 127 µm Lieberkuehnia spec.? I found two cells, size about 125 µm when ovoid, with an organic-walled membranous test and a

Read More »