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Lithonida Vacelet 1981

first appearance

Paleobiology Database
cambrian series 2 epoch
URI: http://resource.geosciml.org/classifier/ics/ischart/CambrianSeries2

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

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(adult)
Paleobiology Database

520 million years ago

(adult, max)