Bivalvia Matching Game

Each image can only have one answer.
The lifeform in the centerish of the image is the important one.

1)

Chaceia ovoidea
Chlamydoconcha orcutti
Leukoma staminea
Pododesmus macrochisma
Crassadoma gigantea
Chlamys hastata
   

2)

Pododesmus macrochisma
Chlamys hastata
Crassadoma gigantea
Leukoma staminea
Chlamydoconcha orcutti
Mytilimeria nuttallii
   

3)

Crassadoma gigantea
Pododesmus macrochisma
Leukoma staminea
Chlamydoconcha orcutti
Chaceia ovoidea
Parapholas californica
   

4)

Chlamys hastata
Pododesmus macrochisma
Chlamydoconcha orcutti
Parapholas californica
Leukoma staminea
Mytilimeria nuttallii
   

5)

Chlamydoconcha orcutti
Chaceia ovoidea
Crassadoma gigantea
Chlamys hastata
Leukoma staminea
Mytilimeria nuttallii
   

6)

Chaceia ovoidea
Mytilimeria nuttallii
Parapholas californica
Chlamys hastata
Crassadoma gigantea
Pododesmus macrochisma
   

7)

Chlamys hastata
Crassadoma gigantea
Pododesmus macrochisma
Leukoma staminea
Chlamydoconcha orcutti
Chaceia ovoidea
   

8)

Mytilimeria nuttallii
Parapholas californica
Chaceia ovoidea
Chlamydoconcha orcutti
Leukoma staminea
Pododesmus macrochisma

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