Buyscon spiniger or Busycon Carica, Whelk - Member Collections - The Fossil Forum
Busycon carica (Gmelin, 1791) Knobbed Whelk
File:Busycon carica (Gmelin, 1791) Naturalis Biodiversity Center.jpg - Wikimedia Commons
Gastropod: Busycon carica (PRI 76867, spec. 3) - Download Free 3D model by Digital Atlas of Ancient Life (@DigitalAtlasOfAncientLife) [ec0f80f]
This is the underside of a Knobed Welk (Busycon carica) with is foot retracted and its Operculum clossing it off. | Mermaiden Studio of Photography & Design