Dear (probably Old Seashells and Andy);-
What I have here is a Hormotoma gracilis (maybe Homotoma?). It
measures 13.48mm long and is about 400 million years old. Since a
fleeting glance makes it look like an Epitonium (or Cerith or other
coiled critter) I wondered if there is some descendency from the fossil
that I have. Inquiring minds want to know.
Art