Black-lined Periwinkle seashells (Littorina nigrolineata)
Banded Wedge seashells (Donax vittatus)
Top Shells (Gibbula spp.)
Small Scallop seashells (Chlamys sp.)
Dog Whelk seashells (Nucella lapillus)
Common Cockle seashells (Cerastoderma edule)
Netted Dog Whelk seashells (Hinia reticulata)
Small Scallop seashells (Chlamys sp) and Manila Clam
Common Whelk seashells (Buccinum undatum)
COPYRIGHT JESSICA WINDER 2014
All Rights Reserved
Jessica's Nature Blog 
That’s a really interesting collection, Jessica. Do the top shells subdivide into different types? Some of them are very similar to nerites, but perhaps those are different species altogether. RH
LikeLike
Yes, the Top Shells have several species, and there is an assortment of Top Shell species shown in the photograph Miscellaneous Seashells 3. They are mostly Grey Top Shells (Gibbula cineraria) and Flat Top shells (Gibbula umbilicalis) with at least one Turban Top Shell (Gibbula magus). Some other common British species included in the Top Shell group are the Thick Top Shell (Monodonta lineata), Pennant’s Top Shell (Gibbula pennanti) and Gibbula tumida which are not shown in this picture.
There is a bit of a resemblance to Nerites but Top Shells are not closely related to them. In this country the Nerites are only represented by a freshwater species (Theodoxus fluviatilis). Although there is a small periwinkle in the high intertidal zone called Littorina neritoides, it is not a Nerite gastropod mollusc.
LikeLike
That’s a very useful – and indeed patient – reply, Jessica. Many thanks. RH
LikeLike