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Homostelea

      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.
homostelea
Morphology of homostelean Trochocystites bohemicus. After Bruno et al. (2000)

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

Trochocystites bohemicus p3211
Trochocystites bohemicus VL1671
Trochocystites bohemicus p3259
Trochocystites bohemicusfoto VL694
Trochocystites bohemicus VK26
Trochocystites bohemicus CW518
Trochocystites bohemicus CW519
Trochocystites bohemicus RP60
Trochocystites bohemicus CW517
Trochocystites bohemicus VL1757
Trochocystites bohemicus p3273
Trochocystites bohemicus CW79
Trochocystites bohemicus CW80
Trochocystites bohemicus CW520
Trochocystites bohemicus CW530
Trochocystites SZ362
Trochocystites VK323
Trochocystites VK207
Trochocystoides parvus VK23
Vizcainoia Zamora a Smith, 2012Fatka a Szabad (2014), Fig. 3A,B; Fig. 4F SZ359
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]