First of all, let me spread common sense to you: There are three types of Sichuan clams: pine clams, green clams and furnace clams. Nowadays, they are sold in a mixture. The more pine clams (which are very small), the more expensive they are.

The picture you posted is very clear. To be honest, both of these products are adulterated. They are adulterated Fritillaria fritillary and Zhejiang Fritillaria. The more fake they are, the cheaper they will be.