I was reading a paper Fruitbat just posted in his fantastic PDF library, on sauropods see below,  and it triggered a concern that I've had for a while for collectors purchasing claws.   First let me preface the discussion by saying I'm not a sauropod expert just throwing out some observations and questions.    Identifying claws is not an easy diagnosis.   Sellers typically put a name, mostly at a genus level, on claws they sell.   I have several in my collection and boy they are indeed