Helicarionidae
Allenoconcha basispiralis Preston, 1913
Allenoconcha belli Preston, 1913
Allenoconcha congener Preston, 1913
Allenoconcha mathewsi Preston, 1913
Allenoconcha monspittensis Preston, 1913
Allenoconcha perdepressa Preston, 1913
Allenoconcha royana Preston, 1913
