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Plebiellus Zhang et al. 1980

first appearance

Paleobiology Database
cambrian stage 4 age
URI: http://resource.geosciml.org/classifier/ics/ischart/CambrianStage4

Attribution: International Chronostratigraphic Chart: http://www.stratigraphy.org/index.php/ics-chart-timescale

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Paleobiology Database

513 million years ago

(max)