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names in breadcrumbs
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Creatures
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Animal
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Arthropods
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Trilobites
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Damesellidae
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Animal
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Lichida
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Damesellidae
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Parablackwelderia
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Parablackwelderia sheridanorum (Jell & Hughes 1997)
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Paleobiology Database
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Paleobiology Database
last appearance
Paleobiology Database
drumian age
URI:
http://resource.geosciml.org/classifier/ics/ischart/Drumian
Attribution:
International Chronostratigraphic Chart: http://www.stratigraphy.org/index.php/ics-chart-timescale
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Paleobiology Database
501 million years ago
(min)