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Creatures » Cellular Organisms » Eukaryotes » SAR (Stramenopiles, Alveolates, Rhizaria) » Rhizarians » Retaria » Radiolarians » Polycystines » Xiphostylidae » Tripocyclia «

Tripocyclia smithi Pessagno et al. 1989

last appearance

Paleobiology Database
callovian age
URI: http://resource.geosciml.org/classifier/ics/ischart/Callovian

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

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Paleobiology Database

164.7 million years ago

(min)