| Plastomeninae Temporal range:
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|---|---|
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| Plastomenus sp. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Testudines |
| Suborder: | Cryptodira |
| Family: | Trionychidae |
| Subfamily: | †Plastomeninae Hay, 1902 |
| Genera | |
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See text | |
Plastomeninae is an extinct subfamily of softshell turtles that inhabited most of North America from the Cretaceous to the Eocene. Members of this subfamily are also known as plastomenines.