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Schwageriniformis expressus (Anosova ex Bensh 1969)

first appearance

Paleobiology Database

307 million years ago

(max)
Paleobiology Database
kasimovian age
URI: http://resource.geosciml.org/classifier/ics/ischart/Kasimovian

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

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