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Ostracoda (Ostracods)

      Ostracoda is a class of the Crustacea, sometimes known as the seed shrimp because of their appearance. Some 65,000 species (13,000 of which are extant taxa) have been identified,grouped into several orders. Ostracods are small crustaceans, typically around 1 millimetre (0.04 in) in size, but varying from 0.2 millimetres (0.008 in) to 30 mm (1.2 in) in the case of Gigantocypris. Their bodies are flattened from side to side and protected by a bivalve-like, chitinous or calcareous valve or "shell". The hinge of the two valves is in the upper (dorsal) region of the body. Ostracods are grouped together based on gross morphology, but the group may not be monophyletic; their molecular phylogeny remains ambiguous. Ecologically, marine ostracods can be part of the zooplankton or (most commonly) they are part of the benthos, living on or inside the upper layer of the sea floor. Many ostracods, especially the Podocopida, are also found in fresh water and terrestrial species of Mesocypris are known from humid forest soils of South Africa, Australia, New Zealand and Tasmania. They have a wide range of diets, and the group includes carnivores, herbivores, scavengers, and filter feeders.

Source: http://en.wikipedia.org/wiki/Ostracoda


 

JK11423
Bolbozoe JK11423
JK11415b
Bolbozoe JK11415
JK11415a
Bolbozoe JK11415
JK11415
Bolbozoe JK11415
JK11444
Bolbozoe JK11444
JK11429a
Bolbozoe JK11429
JK11446
Bolbozoe JK11446
JK11429
Bolbozoe JK11429
JK11415c
Bolbozoe JK11415
SM184
Boucia ornatissima SM184
SM183c
Boucia ornatissima SM183
SM183a
Boucia ornatissima SM183
SM104
Boucia ornatissima SM104
SM183
Boucia ornatissima SM183
XA492
Cerninella bohemica XA492
VK81
Conchoprimitia Öpik, 1935 VK81
XA494
Crescentilla vaneki XA494
JK11416
Entomis JK11416
JK11433
Entomis JK11433
JK11425
Entomis JK11425

In the Virtual Museum there are total 241 samples

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