Arthur William Baden Powell was a New Zealand malacologist, naturalist and palaeontologist, a major influence in the study and classification of New Zealand molluscs through much of the 20th century. He was known to his friends and family by his third name, "Baden".
Margarella is a genus of sea snails, marine gastropod molluscs in the subfamily Margarellinae of the family Calliostomatidae.
Aeneator is a genus of sea snails, marine gastropod molluscs in the whelk family Tudiclidae.
Incisura is a genus of sea snails or keyhole limpets, marine gastropod molluscs in the family Scissurellidae.
Fissurisepta is a genus of keyhole limpets, marine gastropod mollusc in the family Fissurellidae.
Pleurotomella innocentia is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Antarctospira principalis is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.
Leucosyrinx macrobertsoni is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
Micropleurotoma spirotropoides is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae
Typhlodaphne strebeli is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.
Micropleurotoma is a genus of sea snails, marine gastropod mollusks in the family Horaiclavidae
Chlanidota signeyana is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks. It was described by Harold Powell in 1951.
Brookula strebeli is a species of sea snail, a marine gastropod mollusk unassigned in the superfamily Seguenzioidea.
Brookula decussata is a species of sea snail, a marine gastropod mollusk unassigned in the superfamily Seguenzioidea.
Volvarina ealesae is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.
Venustatrochus is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.
Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
Spirotropis is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
Tropidomarga biangulata is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
Venustatrochus georgianus is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
