Skip navigation
480 Views 4 Replies Last post: Aug 12, 2014 12:38 AM by Roger RSS
Currently Being Moderated

Aug 9, 2014 12:20 PM

Bivalve ID

Hi Guys,

 

I have attached three photos of bivalve (about 10 mm shell length) which I thought under the genus Neotrigonia but I cannot distinguish the species name. These were taken from the Philippines. Any help on the correct identification of this species will be greatly appreciated.

 

Thanks in advance

roger

Attachments:
  • Currently Being Moderated
    Aug 9, 2014 3:36 PM (in response to Roger)
    Re: Bivalve ID

    Roger,

     

     

    There may not be many specis to go at, but I don't have a key or other discriminatory information.

     

     

    Maybe these can help?

     

    - Cotton, B.C. (1961)

    'South Australian Mollusca. Pelecypoda. Handbook of the Flora and Fauna of South Australia Series'

    Adelaide; W.L. Hawes, Government Printer. pp.1,363

    Supposdly it has a key to Neotrigonia,albeit in South Australia.

     

    - Huber M. (2010)

    Compendium of bivalves. A full-color guide to 3,300 of the world’s marine bivalves. A status on Bivalvia after 250 years of research.'

    Hackenheim: ConchBooks. pp.901, 1 CD-ROM

     

    - Dr Markus Huber,

    University of Zurich; Faculty of Science; Institute of Evolutionary Biology and Environmental Studies (IEU)

    He has done some work on the species data in the World Register of Marine Species (http://www.marinespecies.org/index.php)

     

     

    Mike

    • Report Abuse
  • Currently Being Moderated
    Aug 10, 2014 4:01 PM (in response to Roger)
    Re: Bivalve ID

    Neotrigonia are in the family Trigoniidae of which the  neotrigonia genus has the only living members, with 8 species,given in http://en.wikipedia.org/wiki/Neotrigonia & conchology.be shows 6 at http://www.conchology.be/?t=65&family=TRIGONIIDAE

    another site,  is  Rotterdam museum (nmr-pics) which my McAfee rates as untested but rates 'translate this page' as safe. on LHS is list of families & selecting trigoniidae gives bednalli margaritacea & strangeii all with interiors (I also found interior of Lamarckii in Topseashells). This is the 1st concern as all these interiors were pearly & also the 'pleating' of the upper side showed through in the interior unlike yours. Also all 6 (plus gemma shown in  http://www.bagniliggia.it/WMSD/HtmFamily/TRIGONIIDAES.htm ) have a distinctive straight edge in outline, unlike yours. Googling neotrigonia also turned up a paper "Neotrigonia, the sole surviving genus of the Trigoniidae..." 1984which gives the 1st page; it recognises only 6 sp's but says all are in waters adjacent to Australia, & http://www.gbif.org/species/4595111 gives a map supporting that distribution. The only species not illustrated is jacksoni (2011),presumably discovered 2011.

    • Report Abuse
    • Currently Being Moderated
      Aug 10, 2014 5:34 PM (in response to rhossilian)
      Re: Bivalve ID

      As the above implies Trigonia's v. unlikely (unless jacksoni is untypical), I was going to suggest looking in the above 3 sites (conchology.be, nmr & Bagni Liggia) as well as femorale, ( http://www.femorale.com/shellphotos/ ) at the (bivalve) families Cardiidae & Carditidae though I couldn't rule out similar shells being in other families; but then noticed a rather similar shell Timoclea sp's. (family Veneridae). Hence Timoclea in EOL http://eol.org/pages/51296/media , where eg http://media.eol.org/content/2014/05/31/12/45882_orig.jpg looks very close

      • Report Abuse

More Like This

  • Retrieving data ...

Bookmarked by (0)

What the symbols mean

  • "correct" answer available
  • "helpful" answer