Open Palaentology (or OPal) is a Diamond Open Access palaeontology journal with a mission to provide a flexible platform for quality palaeontological research that is free and accessible to authors and readers everywhere.
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Stylophorans are an extinct class of Paleozoic echinoderms with complex morphology. In general, they lack the radial symmetry typical of other echinoderms. Given their occurrence in the Cambrian, this group is often studied to understand the basic nature and origination of the metazoan body plan.
