16 Lamellaria latens COMPARISON Velutina plicatilis

16  Lamellaria latens COMPARISON Velutina plicatilis

Very weakly calcified, amber-brown shell consists mainly of periostracum which, when live, forms a velvety surface often mistaken for the mantle of Lamellaria.
1: flaked off section of the flimsy, fragile, calcified inner layer; increases translucency.
2: short spire which barely protrudes from the outline of the shell.
3: apex is recessed below the previous whorl.
4: sutures deep, when not concealed by periostracum.
Extracted shell of Velutina plicatilis. Moray coast, N.E. Scotland. May 2018. Leg. C. Rickard.

marinvert.senckenberg.science/image-browse/