Neoterebra sterigma
Neoterebra sterigma is a species of sea snail, a marine gastropod mollusk in the family Terebridae, the auger snails.
Neoterebra sterigma is a typical species of deep-sea benthic snails in the western Atlantic Ocean. Its distinguishing features are fine shell carvings and wide apex angles, which are significantly different from shallow-sea species of the same genus.
Classification
Neoterebra sterigma belongs to the superfamily Conoidea, family Terebridae, and genus Neoterebra. It is currently only recorded in the Brazilian waters of the western Atlantic Ocean, with a habitat depth of 340-360 meters. It is a typical deep-sea aquatic species.Morphological Characteristics
Shell type
Small snail, shell length 16.4-24.2 mm, with a wide and fat outline, convex whorls, and a wide apex angle.Shell surface carving
Axial ribs and spiral carvings: Axial ribs are fine and closely spaced, and the spiral carvings are dense and deep, cutting the top of the axial ribs to form a grid-like structure.Suture zone: With white sub-suture zone, deep indentations on the edge, and rectangular pits formed by the axial ribs inside the zone.
Color: The shell color of living organisms is light yellow to pinkish white, and the sub-suture zone is white.
Protoshell: 1.5-2.0 whorls, spherical core, and unclear transition from the body.