This shell appears to be a Brown Baby Ear Snail or Sinum maculatum (Say, 1831). It was found by a 17 year old Lucien Pearson Beckner in 1...

These shells appear to be Crested Oysters or Ostrea equestris (Say, 1834).  One has group of barnacles attached to it. They were found by a...

  This shell appears to be a Spotted Slipper Snail or Crepidula maculosa (Conrad, 1846). It was found by a 17 year old Lucien Pearson Beckn...