Alvania argillensis
Alvania argillensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.[1] DescriptionThe length of the shell attains 1.6 mm, its diameter 1.1 mm.
DistributionFossils of this marine species were found in Oligocene strate in Aquitaine, France (age range: 28.4 to 23.03 Ma) References
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