Pontiothauma mirabile -... en.wikipedia.org

Mirabile hi-res stock... www.alamy.com

Mirabile hi-res stock... www.alamy.com

Pontiothauma pacei -... en.wikipedia.org

Mirabile hi-res stock... www.alamy.com

Mirabile hi-res stock... www.alamy.com

WoRMS - World Register of... www.marinespecies.org

WoRMS - World Register of... www.marinespecies.org

Molluscabase - taxdetails www.molluscabase.org

Mirabile hi-res stock... www.alamy.com

Mirabile hi-res stock... www.alamy.com

WoRMS - World Register of... www.marinespecies.org

Molluscabase - taxdetails www.molluscabase.org

Molluscabase - taxdetails www.molluscabase.org

Full article: A critical... www.tandfonline.com

Full article: A critical... www.tandfonline.com

I.—Natural history notes... archive.org

Full article: A critical... www.tandfonline.com

I.—Natural history notes... archive.org

Illustrations of the... upload.wikimedia.org