Unresolved name

Unresolved name: Animals » Molluscs » Cephalopods » Ammonoidea » Pleuronodoceratidae » Rotodiscoceras «

Rotodiscoceras torulosum Zhao et al. 1978

first appearance

Paleobiology Database

254.17 million years ago

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

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

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