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Spirorbula squalida (R. T. Lowe 1852)

Body symmetry

Schilthuizen and Davison 2005
dextrally coiled
URI: http://eol.org/schema/terms/dextrally_coiled

Definition: in which the direction of the coil is dextral (right-handed)

Attribution: https://en.wikipedia.org/wiki/Sinistral_and_dextral

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(adult)
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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