Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.
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".
Buccinulum pertinax is a species of marine gastropod mollusc in the family Buccinidae. It was first described by Eduard von Martens in 1878. It is endemic to the waters of New Zealand.
Buccinulum is a genus of sea snails, marine gastropod molluscs in the family Buccinidae, the true whelks.
Maoricolpus finlayi is a species of sea snail, a marine gastropod mollusc in the family Turritellidae. It is known to occur only in Spirits Bay, North Island, New Zealand.
Metaxia duplicarinata is a species of marine gastropod mollusc in the family Triphoridae. It was first described by Baden Powell in 1940, under the name Mendax duplicarinata. It is endemic to the waters of New Zealand.
Buccinulum robustum is a species of marine gastropod mollusc in the family Buccinidae. It was first described by Baden Powell in 1929. It is endemic to the waters of New Zealand.
Euthrenopsis bountyensis is a species of marine gastropod mollusc in the family Buccinidae. It was first described by Baden Powell in 1929. It is endemic to the waters of New Zealand.
Euthrenopsis otagoensis is a species of marine gastropod mollusc in the family Buccinidae. It was first described by Baden Powell in 1929. It is endemic to the waters of New Zealand. It is the type species for the genus Euthrenopsis.
Euthrenopsis is a genus of sea snails, marine gastropod mollusks in the family Buccinidae, the true whelks. All species in the family are endemic to the waters of New Zealand.
Ividella maoria is a species of marine gastropod mollusc in the family Pyramidellidae. It was first described by Baden Powell in 1940. It is endemic to the waters of New Zealand. The mollusc was the first of its species to be identified in New Zealand, and as of 2022 remains the only endemic Ividella species in the country.
Crassitoniella carinata is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston Ponder in 1965, and it is the type species for the genus Crassitoniella. It is endemic to the waters of New Zealand.
Eatoniella bathamae is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.
Eatoniella pullmitra is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand. The species has a preference for living on algae found in the sublittoral zone.
Eatoniella rakiura is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand. The first specimens of the species were exclusively found around Stewart Island.
Eatoniella stewartiana is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand.
Pisinna rekohuana is a species of marine gastropod mollusc in the family Anabathridae. First described by Badwn Powell in 1933 as Estea rekohuana, it is endemic to the waters of New Zealand. There are two subspecies of the gastropod: Pisinna rekohuana rekohuana, primarily found in the south and Pisinna rekohuana lactorubra, primarily found on the north-east coast of the North Island.
Tubbreva exaltata is a species of marine gastropod mollusc in the family Anabathridae. First described by Badwn Powell in 1933 as Notosetia exaltata, it is endemic to the waters of New Zealand. There are two subspecies, Tubbreva exaltata exaltata and Tubbreva exaltata sorenseni.
Pupatonia gracilispira is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Baden Powell in 1933 as Estea gracilispira, it is endemic to the waters of New Zealand.
Powellisetia unicarinata is a species of marine gastropod mollusc in the family Rissoidae. First described by Powell in 1930 as Notosetia unicarinata, it is endemic to the waters of New Zealand.
