Unresolved name

Unresolved name: Animal » Chordates » Ptychodontidae » Ptychodus «

Ptychodus concentricus Agassiz 1839

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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sexual system

Fairbairn 2013
dioecious
URI: https://www.wikidata.org/entity/Q148681

Definition: a characteristic of a species, meaning that it has distinct male and female individual organisms.

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