Cerithiella martensii is a species of very small sea snail, a marine gastropod mollusk in the family Newtoniellidae. This species is known from the Gulf of Mexico. It was described by Dall, in 1889.[1]
The maximum recorded shell length is 11.3 mm.[2]
Minimum recorded depth is 419 m.[2] Maximum recorded depth is 2160 m.[2]