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Foraminiferans

      The Foraminifera ("hole bearers"), or forams for short, are a large group of amoeboid protists with reticulating pseudopods, fine strands of cytoplasm that branch and merge to form a dynamic net.They typically produce a test, or shell, which can have either one or multiple chambers, some becoming quite elaborate in structure.These shells are made of calcium carbonate (CaCO3) or agglutinated sediment particles. About 275,000 species are recognized, both living and fossil. They are usually less than 1 mm in size, but some are much larger, and the largest species reaching up to 20 cm.

See: http://en.wikipedia.org/wiki/Foraminifera


 

p4226
Flabellina elliptica p4226
JK6666a
Pseudoschwagerina Dunbar & Skinner, 1936 JK6666
JK6669a
Pseudoschwagerina Dunbar & Skinner, 1936 JK6669
JK6664a
Pseudoschwagerina Dunbar & Skinner, 1936 JK6664
 

In the Virtual Museum there are total 26 samples

Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]