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Glyptocystida (Glyptocystids)

      Order Glyptocystitida and especially its group Rhombifera are a small but successful group of derived blastozoan echinoderms that originated during the Late Cambrian (Ubaghs, 1999), were prominent in the fossil record by the end of the Early Ordovician, and had a peak in diversity during the Middle Ordovician (Sprinkle et al., 1996). On the whole the clade is extremely conservative, having a thecal plating formula that remained generally unchanged throughout its history, until its extinction by the early Late Devonian.

On/line reference: Broadhead a Sumrall (2003).

Rhombifera bohemica Barrande

Inv. no.MŠ1819
TaxonomyKmen: Echinodermata / Třída: Glyptocystida / Rod: Rhombifera / Druh: bohemica
Description
Lithostratigraphyletenské souvrství
Chronostratigraphypaleozoikum - ordovik - kralodvor - beroun

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Rhombifera bohemica
Rhombifera bohemica Barrande

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