Microworld

world of amoeboid organisms

Menu
Yogsothothidae Yogsothoth knorrus
Yogsothoth knorrus, after Shishkin and Zlatogursky, 2018

Yogsothoth knorrus Shishkin and Zlatogursky, 2018

Diagnosis: Individual cells in colony have a diameter of 5.53-13.26 µm; they are covered by flattened plate-scales (1.5-2.8 x 0.7-1.4 µm) with an axial rib (0.9-1.4 µm) and an inflected margin. The colony is surrounded by a thick layer of boat-like outer scales (1.6-3.4 x 1.0-1.9 x 0.5-1.5 µm) with axial rib (1.1- 1.7 µm) and numerous conical papillae on its outer surface, forming irregular rings. On the reverse side of the scale is a large opening (1.4-3.1 x 0.7-1.6 µm). L/W, L/H and W/H ratio is respectively 1.85; 2.48; 1.34. L × W of the opening/L × W of the scale ratio is 0.80.

Ecology: Marine. Indian Ocean shore near Terekhol River, India (N15.72; E73.69).

Recent posts

Rhizaspis armata

R. armata, 68 µm long, excl. spines – Laegieskamp Rhizaspis armata (Lauterborn, 1901) Dumack et al., 2021 Basionym: Pamphagus armatum Lauterborn, 1890 Diagnosis: Theca membranous,

Read More »

Rhizaspis spinosa

The original description with original drawings, Penard, 1890. Rhizaspis spinosa (Penard, 1890) Dumack et al., 2021 Basionym: Trinema spinosum Penard, 1890 Diagnosis: Theca membranous, ovoid

Read More »

Difflugia “pseudoclaviformis”

Difflugia “pseudoclaviformis”, front and side view, 424 µm Difflugia “pseudoclaviformis” Diagnosis: Shell pyriform, compressed, with a more or less pronounced aboral protuberance; shell composed of

Read More »

Difflugia from Lolo Pass

Shells 461-448 µm, stacked image. I found this large en remarkable shells in sediment of a small mountain lake near Lolo Pass, Montana USA. It differs

Read More »

Foraminifer drome

Unknown species, collected from the river Drôme, France, 2021 Unknown species September 2021, I found about ten specimens of an agglutinated foraminifer in a sample

Read More »

Cyclopyxis spec

Cyclopyxis spec., 168 µm Cyclopyxis spec. Diagnosis: Shell circular in ventral and dorsal view, more or less hemispherical in lateral view (height/diameter ≈ 0.5); lateral

Read More »

Difflugia fallax

Difflugia fallax, from Penard, 1902 Difflugia fallax Penard, 1890 Diagnosis: Shell hyaline or yellowish-greenish, black at low magnification, round in cross section, formed of a

Read More »

Zivkovicia compressoidea

Z. compressoidea, a-b after Chardez, 1958; c after Jung, 1942 Zivkovicia compressoidea  (Jung, 1942) new.comb. Basionym: Pontigulasia compressoidea Jung, 1942 Diagnosis: Shell ovoid and compressed,

Read More »

Zivkovicia flexa

Z. flexa, from Cash and Hopkinson, 1909 Zivkovicia flexa  (Cash and Hopkinson, 1909) Ogden, 1983 Basionym: Pontigulasia compressa var. flexa  Cash and Hopkinson, 1909 Diagnosis:

Read More »