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Creatures » Cellular Organisms » Eukaryotes » Opisthokonts » Animal » Bilateria » Protostomes » Ecdysozoans » Arthropods » Trilobites » Libristoma » Ptychopariida » Proasaphiscidae » Proasaphiscus «

Proasaphiscus quadratus Zhang et al. 1980

last appearance

Paleobiology Database
cambrian stage 5 age
URI: http://resource.geosciml.org/classifier/ics/ischart/CambrianStage5

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

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Paleobiology Database

505 million years ago

(min)