OP
As you can see Mollusca is here, but indeed, there is no bivalvia. Can you plase mention particular specie you are looking for and I will check why it isnt in the listjands@It should be there, at least Bivalvia and Cephalopoda, since I used it in my taggings, checking now...
Are you sure you have downloaded the latest version of file?

P.S. Ok, I've found the reason the Bivalvia isnt there. It looks like Bivalvia reported to the Catalogue of Life from ITIS database, which I skip when importing for one simple reason. They report Bivalviae, all of them, and I'm trying to import only marine species for one simple reason: LR cannot handle large amount of data. So, at this stage it cant be done, but I can create keywords list only for Bivalvia (all of them, not only marine) and you can use this list and pray your LR will not crash. or we just sit and wait when Catalogue of the Seas will be released in October (PLoS ONE Collections | Census of Marine Life)