Unresolved name

Unresolved name: Polycystines » Spumellaria » Tritrabidae «

Ditrabs

first appearance

Paleobiology Database
kimmeridgian age
URI: http://resource.geosciml.org/classifier/ics/ischart/Kimmeridgian

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

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Paleobiology Database

155.7 million years ago

(max)