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      Homostelea is an extinct class of exclusively Middle Cambrian echinoderms. They are characterised by absence of a feeding arm, flat, relatively flat thaeca and by stem of essentially 2 series of plates.
Morphology of homostelean Trochocystites bohemicus. After Bruno et al. (2000)

Reference: Paleobiology 26(4):529-555. 2000


Trochocystites bohemicus VL694

In the Virtual Museum there are total 40 samples

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