| Gigantoproductus | |
|---|---|
| Gigantoproductus sp. (near Seahouses, Northumberland, UK) | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Brachiopoda |
| Class: | †Strophomenata |
| Order: | †Productida |
| Family: | †Monticuliferidae |
| Genus: |
†Gigantoproductus Sarytcheva |
| Species | |
Gigantoproductus is a genus of extinct brachiopods in the order Productida and the family Monticuliferidae. The species were the largest of the carboniferous brachiopods, with the largest known species ranging in size from 9 to 12 centimeters (3.5 to 4.7 inches). Productids date back to approximately 407 million years ago. As fossils, their shells occur within a limestone matrix.