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+--- Thread: More help, please (/showthread.php?tid=1059)



More help, please - wil9000 - 08-11-2010

I have some what I think are Ark shells, and some others, too.
First, Arca zebra?
<a href="http://www.flickr.com/photos/wil9000/4882086423/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4882086423/">http://www.flickr.com/photos/wil9000/4882086423/</a><!-- m --></a>
<a href="http://www.flickr.com/photos/wil9000/4882693838/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4882693838/">http://www.flickr.com/photos/wil9000/4882693838/</a><!-- m --></a>
Then, other Arks?
<a href="http://www.flickr.com/photos/wil9000/4882085959/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4882085959/">http://www.flickr.com/photos/wil9000/4882085959/</a><!-- m --></a>
<a href="http://www.flickr.com/photos/wil9000/4882692048/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4882692048/">http://www.flickr.com/photos/wil9000/4882692048/</a><!-- m --></a>
Finally, these look Arkish to me, but I may be completely wrong.
<a href="http://www.flickr.com/photos/wil9000/4882084525/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4882084525/">http://www.flickr.com/photos/wil9000/4882084525/</a><!-- m --></a>
<a href="http://www.flickr.com/photos/wil9000/4882692436/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4882692436/">http://www.flickr.com/photos/wil9000/4882692436/</a><!-- m --></a>


More help, please - mikede - 08-12-2010

Do you know the locality data of these shells?

The first one could be one of several very similar species distributed all over the world (Arca zebra, Arca noae, Arca navicularis, Arca pacifica etc.). The second set contains 3 species of the family Arcidae from the genus Anadara, but without locality data Anadara species are very hard to tell apart. The two smaller shells from the third set are probably from the genus Americardia (family Cardiidae) and the bigger shell is probably a Barbatia sp.


More help, please - wil9000 - 08-12-2010

Locality probably SE United States, although a few may be from the Mediteranean or Wales. Not much info on this collection, that I inherited. Thanks for your help!
Wil


More help, please - mikede - 08-12-2010

In that case the shells from the second set could be (from left to right): Noetia ponderosa (Say, 1822), Anadara brasiliana (Lamarck, 1819), Anadara floridana (Conrad, 1869).

The Cardiidae from the third set should be Americardia media (Linnaeus, 1758)


More help, please - paul monfils - 08-13-2010

The first picture appears to be Arca imbricata.


More help, please - marlo - 08-20-2010

Photos have been deleted.  Suggest you review the treatment of Arca from SE Florida at <a href="http://z14.invisionfree.com/Conchologist_Forum/index.php?showtopic=345" target="_blank"><!-- m --><a class="postlink" href="http://z14.invisionfree.com/Conchologist_Forum/index.php?showtopic=345">http://z14.invisionfree.com/Conchologis ... wtopic=345</a><!-- m --></a>