Microworld

world of amoeboid organisms

Menu
Placocista spinosa
Placocista spinosa
Placocista spinosa, 136 µm – British Columbia, sample: Thierry Heger

Placocista spinosa (Penard, 1899)

Diagnosis: shell broad, ovoid, strongly compressed, with acute lateral border; shell edge with spines; shell composed of many small scales; along the aperture is an area covered with very minute scales; aperture a broad but very flattened slit, biconvex; nucleus spherical, with fragmented nucleolar material; filopodia.

Dimensions: 105-145 µm

Ecology: Sphagnum, peat bogs

Remarks:

lacocista spinosa
Placocista spinosa, 105 µm, Tirol
lacocista spinosa
Placocista spinosa, 105 µm, Tirol
lacocista spinosa
Placocista spinosa, 145 µm, Ecuador
lacocista spinosa
Placocista spinosa, 145 µm, Ecuador
lacocista spinosa
P. spinosa, Germany (sampled by Hans Rothauscher, 2019)
lacocista spinosa
P. spinosa, Germany (sampled by Hans Rothauscher, 2019)
lacocista spinosa
P. spinosa, Germany (sampled by Hans Rothauscher, 2019)
Recent posts

Penardochlamys arcelloides

P. arcelloides – from Penard, 1904 Penardochlamys arcelloides  (Penard, 1904) Deflandre, 1953 Diagnosis: Colorless or very slightly yellowish envelope, bag or cauldron-shaped, very thin, chitinous,

Read More »

Reticulomyxa hannae

R. hannae, plasmodium – photomicrograph Steffen Clauss Reticulomyxa hannae Völcker and Clauß, 2020 Diagnosis: Trophozoites surrounded by a very thin mucous envelope, with slowly moving plasmodia, variable

Read More »

Velamentofex saxonensis

V. saxonensis, feeding (photomicrograph Steffen Clauss) Velamentofex saxonensis Völcker and Clauß, 2020 Diagnosis: Trophozoites ovoid, 30-95 μm, granuloreticulopodia up to 1000 μm long. with a hyaline, thin

Read More »

Velamentofex tyrolensis

V. tyrolensis (photomicrograph Steffen Clauss) Velamentofex tyrolensis Völcker and Clauß, 2020 Diagnosis: Trophozoites ovoid, 98-125 μm, with reticulopodia up to 300 μm long, with a hyaline,

Read More »

Velamentofex berolinensis

V. berolinensis Velamentofex berolinensis Völcker and Clauß, 2020 Diagnosis: Trophozoites ovoid, 50-300 µm, with a hyaline, extremely flexible, membranous test. Nuclei numerous, 11.6-16.2 µm in diameter,

Read More »

Lieberkuehniidae

 Lieberkuehniidae  Siemensma, Holzmann, Apothéloz-Perret-Gentil, Clauß, Voelcker, Bettighofer, Khanipour Roshan, Walden, Dumack and Pawlowski, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test very flexible, elongated to broadly

Read More »