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Bayerotrochus tangaroanus, or Tangaroan slit shell, is a species of sea snail, a marine gastropod mollusc in the family Pleurotomariidae.[1]
The shell has a typical trochoid shape with a spire angle of approximately 90 degrees and nearly straight sided profile until the later whorls which are slightly rounded with an oblique periphery and a clearly defined suture. The base is inflated and rounded with a small columellar callus at the center covering roughly 10 percent of the base area. The aperture is oval, the slit is positioned roughly halfway between the periphery and the suture and is relatively short, about 16 percent of the circumference. The shell is lightly sculptured with fine spiral threads which are more clearly defined below the selenizone (the area where the shell growth filled in the slit) crossed by stronger axial growth lines which gives the effect of a weak rectangular pattern. The base has 38 to 40 fine spiral threads.
The protoconch and primary whorls are white and are smooth, the rest of the shell is creamy peach to white, or pale pink, with a slight iridescent sheen and occasional sparse pale reddish axial flammules. Occasionally the selenizone has thin orange lines. The base is the same color as the body, and the interior of the aperture is nacreous (pearly). The shell is regularly found without a periostracum. The operculum is relatively large, roughly circular, pale brown, and multispiral. Its size ranges from 47 to 69 mm in diameter.[2][3]
This species has been found at depths greater than 400 meters from one particular area between the South Fiji Basin and Three Kings Rise in the South Pacific north of New Zealand.[2]
Bayerotrochus tangaroanus, or Tangaroan slit shell, is a species of sea snail, a marine gastropod mollusc in the family Pleurotomariidae.
Bayerotrochus tangaroanus is een slakkensoort uit de familie van de Pleurotomariidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1982 door Bouchet & Métivier.
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Bayerotrochus tangaroanus (Bouchet & Métivier, 1982) é uma espécie de molusco gastrópode marinho da família Pleurotomariidae, nativa da região sudoeste do oceano Pacífico.[2]
Bayerotrochus tangaroanus possui concha com superfície reticulada, de coloração esbranquiçada ou creme, de até 8 centímetros, com forma de turbante cônico.[2] As espécies do gênero Bayerotrochus são geralmente mais frágeis, arredondadas e menos esculpidas em sua superfície do que os outros três gêneros viventes de Pleurotomariidae.[carece de fontes?]
Esta espécie foi coletada na região sudoeste do oceano Pacífico (Tasmânia e Nova Zelândia).[2]
Bayerotrochus tangaroanus (Bouchet & Métivier, 1982) é uma espécie de molusco gastrópode marinho da família Pleurotomariidae, nativa da região sudoeste do oceano Pacífico.
