05 Rissoa lilacina

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Differentiated embryonic (1) and larval (2) whorls of the protoconch suggest that there is a free living planktonic veliger stage similar to that of other rissoids.
Protoconch whorls lack obvious sculpture and are more tumid than teleoconch (3) whorls.
Shell height 2.2 mm North Wales, March 2015.
: flic.kr/p/2ogofx8
Sets of OTHER SPECIES: /

Imprint

Photographic guide to the identification and biology of European marine invertebrates

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