| Tratayenia Temporal range: Late Cretaceous,
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| Life restoration | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | †Megaraptora |
| Family: | †Megaraptoridae |
| Genus: | †Tratayenia Porfiri et al., 2018 |
| Type species | |
| †Tratayenia rosalesi Porfiri et al., 2018
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Tratayenia is an extinct genus of megaraptoran theropod dinosaurs known from remains found in the Santonian-age Bajo de la Carpa Formation of Argentina.[1] The type and only species, Tratayenia rosalesi, was described in March 2018.[2]
Tratayenia can be distinguished from other megaraptorans on the basis of three autapomorphies (unique derived features) of the front portion of each dorsal vertebra, as well as a single autapomorphy of the sacrum. Tratayenia is one of the youngest known genera of megaraptorans, having lived only about 83 million years ago.
- ^ Porfiri, Juan D; Juárez Valieri, Rubén D; Santos, Domenica D.D; Lamanna, Matthew C (2018). "A new megaraptoran theropod dinosaur from the Upper Cretaceous Bajo de la Carpa Formation of northwestern Patagonia". Cretaceous Research. 89: 302–319. doi:10.1016/j.cretres.2018.03.014.
- ^ Fonseca, Lurdes (28 March 2018). "Just out | A new megaraptoran theropod dinosaur from the Upper Cretaceous Bajo de la Carpa Formation of northwestern Patagonia @ Cretaceous Research". Paleowire.