Thanks Paul;
Printed your comments out to check farther. Said I am trying to learn other
families and my way is to make a display of them
Harry

[log in to unmask] wrote:

> Hi Harry,
>
> "Limpets" is a very general term, which describes a particular form of shell,
> without regard for whether of not the various mollusks having that shell form
> are closely related.  As a result, several non-related families of mollusks,
> with superficially similar shells, are called "limpets".  These include:
>
> Patellidae - "true" limpets
> Acmaeidae - "Acmaea" limpets, sometimes included under "true" limpets
> Lottiidae - sometimes called "owl limpets", though that name really only
> belongs to one species of the family
> Fissurellidae - keyhole limpets, slot limpets, and fleshy limpets
> Calyptraeidae - cup & saucer limpets and slipper limpets
> Capulidae - cap limpets
> Hipponicidae - hairy limpets or hoof limpets
> Siphonariidae - siphon limpets or false limpets
> Lepetidae - no common name that I know of
> Acroloxidae - fresh water limpets
>
> Paul M.
> Rhode Island