Help me identify these bivalves, etc. please guys

[shellhunk]

Oh perhaps "Ex. World Record" size meant it was once the world record size. I just wonder what the current record size is. My specimen is then "worthless"  <img src="images/smiley/confused.gif" alt="" border="0" />

Would you also know the world record size for Ancistrolepis vietnamensis? I've seen alot on the internet and nothing came close to my 118mm specimen. I just labeled it Giant and kept it in my cabinet. The closest I've seen so far is a 109mm.  <img src="images/smiley/smile.gif" alt="" border="0" />  I ask a lot of questions, huh.