Lirularia optabilis -... en.wikipedia.org

TROCHIDAE - Gastropods by... conchology.be

1200px- ... commons.wikimedia.org

STRI Marine Portal -... www.invertebase.org

TROCHIDAE UMBONIINAE -... conchology.be

Lirularia Dall 1909 -... eol.org

Lirularia - FamousFix.com... m.famousfix.com

Invert-E-Base Portal -... www.invertebase.org

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

Lirularia - Wikipedia nl.wikipedia.org

Lirularia - FamousFix.com... m.famousfix.com

TROCHIDAE - Gastropods by... conchology.be

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

TROCHIDAE - Gastropods by... conchology.be

Modern geographic ranges of... www.researchgate.net

List of Mollusca of Order... www.youtube.com

Mineralatlas Lexikon -... www.mineralienatlas.de

Molluscabase - browser www.molluscabase.org

Invertebrate Collections |... tarpits.org

Invert-E-Base Portal -... www.invertebase.org