Adaptation and Appearance

File:Punctum minutissimum.png

Punctum minutissimum
is very small in size with a shell between 1.1 and 1.3 mm in diameter.  Its eyes are less than .02 mm accross (Serb, 2008).  It is very pale brown and slightly transluscent in color.  P. Minutissimum has 3.5 to 4.5 whirls with a radial striae running along the shell.  Striae are thin grooves or channels that run parallel to each other along the shell.  The umbilicus (the cone shaped hole left between the whirls on the under side of the shell) is almost 25% of the width of the shell. 




Follow this link to watch how P. minutissimum moves.