Unresolved name

Unresolved name: Metazoa » Mollusca » Cephalopods » Ammonoidea » Arietitidae » Arnioceras «

Arnioceras nevadanum Gabb 1869

Body symmetry

Namigai et al 2014
bilaterally symmetric
URI: http://purl.obolibrary.org/obo/PATO_0001324

Definition: being symmetric about a plane running from frontal end to caudal end (head to tail), and having nearly identical right and left halves

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last appearance

Paleobiology Database

189.6 million years ago

(min)
Paleobiology Database
pliensbachian age
URI: http://resource.geosciml.org/classifier/ics/ischart/Pliensbachian

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

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number of fossil occurrences

Paleobiology Database

1