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"Large trough shell 70 - 95mm Maybe these are all murchisoni, however many times I sort them. "" Mactra discors was not found in Pegasus Bay during dredge surveys in 1991... and 2008..."" http://www.nabis.govt.nz/Documents/Annual%20distribution%20of%20Trough%20shell%20Lineage.pdf Only Mactra discors recorded in New Brighton in 1929. ""quite common"" NatureWatch NZ is entirely to blame for the state of this coffee table. Spisula murchisoni - NZ EEZ checklist Spisula murchisoni - WoRMS, synonym Mactra murchisoni not accepted Mactrona murchisoni - Te Papa Mactra murchisoni - NZ Mollusca ... must be royalty"
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"Large trough shell 70 - 95mm Maybe these are all murchisoni, however many times I sort them. "" Mactra discors was not found in Pegasus Bay during dredge surveys in 1991... and 2008..."" http://www.nabis.govt.nz/Documents/Annual%20distribution%20of%20Trough%20shell%20Lineage.pdf Only Mactra discors recorded in New Brighton in 1929. ""quite common"" NatureWatch NZ is entirely to blame for the state of this coffee table. Spisula murchisoni - NZ EEZ checklist Spisula murchisoni - WoRMS, synonym Mactra murchisoni not accepted Mactrona murchisoni - Te Papa Mactra murchisoni - NZ Mollusca ... must be royalty"
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Very easy to muddle with Spisula discors but distinguishable in that S. discors, when the periostracum is missing is chalky white and often rusty while S murchisoni is often somewhat banded as in this specimen. Ring ridges are slightly finer and surface of fresh shells somewhat glossy. [S. discors lives in mud, this one in sand] S murchisoni are also slightly more inequilateral when the two species are compared, with a marginally sharper angle on the longer side. There are also some technical differences in the hinge area. Rabbit Island also happens to be the Type site for this sp.
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Very easy to muddle with Spisula discors but distinguishable in that S. discors, when the periostracum is missing is chalky white and often rusty while S murchisoni is often somewhat banded as in this specimen. Ring ridges are slightly finer and surface of fresh shells somewhat glossy. [S. discors lives in mud, this one in sand] S murchisoni are also slightly more inequilateral when the two species are compared, with a marginally sharper angle on the longer side. There are also some technical differences in the hinge area. Rabbit Island also happens to be the Type site for this sp.
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45 x 40 x 12hi for half 20x17x8.5hi whole Little ones seem too thin and fragile to be the young, but shape is ok.
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45 x 40 x 12hi for half 20x17x8.5hi whole Little ones seem too thin and fragile to be the young, but shape is ok.
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The 2 on the bottom - see http://naturewatch.org.nz/observations/4236196 for the top one.
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and triangle shell
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US
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San Diego County, California, US