Unknown shells

[Emma]

Hello everybody!

Here are some photos of unknown shells that belong to a collection of beach collected shells from the 20th century. They have no data, so any possible indication of location would also be of great help.

Best wishes,

Emma.

1.



2.

3.



4.



5.



6.



7.

[conchylinet]

Hi
The first threes look to come from Europe.
4 is perhaps Mitra coronata (indopacific).
5 seems to be a Cardidae from Carribean province

Hope it helps
Pierre

[wolfi]

Hi, Emma!
#3 reminds me of the very common Littorina littorea, but might be a little bit too large for this species (seldom reaching more than 3 cm hight).  :-\
#7 should be Cassidae, genus Phalium, perhaps near to Phalium flammiferum (Röding, 1798). This species reaches up to 9 cm hight.
Kind regards: wolf

[Emma]

Thanks so much Pierre and Wolf for your replies!! It is possible that the first 3 specimens are from Europe, any ideas about their family or name?

Best wishes,

Emma.

[wolfi]

Hi Emma,
well, #3 should be family Littorinidae, perhaps the rather variable Littorina littorea, as said before (with some little doubt left because of the size, but I have seen some specimens of this species with a hight of about 3,3 cm).
#1 and #2 should be family Trochidae, but without knowing the origin it's extremely difficult for me to say anything more..... . Sorry for that.
Kind regards: wolf

[Emma]

Hi Wolf,

I think the origin of 1, 2 and 3 is probably Great Britain, although I can't be sure. All the shells are specimens collected during the 20th century, mainly the 1920's and 1930's, so a bigger size is possible. The other shells pictured are all foreign specimens, from the Pacific or like.

Thanks for your help!

Warm regards,

Emma.

[conchylinet]

1 is maybe Gibbula magus

2 may also be a smaller Gibbula but the shell is in bad condition

3 a Littorina as wolfi wrote, also perhaps Littorina saxatilis

Pierre

[wolfi]

Hm, really difficult (for me, at least).
The perspective / angle of the photo is not so very helpful, too........ .
Sorry indeed, but as far as I remember, Gibbula magus has a rather depressed, stairs-like shell with clearly defined sutures, normally with prominent knots above the periphery of the whorls.
But, again, it's kind of tricky....... :-\.
Kind regards : wolf

[Emma]

Thanks Pierre and Wolf for your imput!
Best wishes and Happy Christmas!

Emma.

[marlo]

#5 is Trachycardium muricatum (Linnaeus, 1758)

Florida to Brazil.