Gracilineustes
Extinct genus of reptiles
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Gracilineustes is an extinct genus of marine crocodyliform that lived in the oceans during the Middle to Late Jurassic. Gracilineustes was a carnivore that spent much, if not all, its life out at sea. It was a small reptile, with G. leedsi measuring 2.25–3.11 m (7.4–10.2 ft) long and G. acutus measuring 3.77 m (12.4 ft) long.[3]
| Gracilineustes Temporal range: Callovian - Kimmeridgian, | |
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| Fossil skull of G. leedsi, NHMUK PV R5793, at the Field Museum of Natural History | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Pseudosuchia |
| Clade: | Crocodylomorpha |
| Suborder: | †Thalattosuchia |
| Family: | †Metriorhynchidae |
| Subfamily: | †Metriorhynchinae |
| Genus: | †Gracilineustes Young et al., 2010 |
| Type species | |
| †Gracilineustes leedsi | |
| Other species | |
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| Synonyms | |
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Discovery and species
Classification
Gracilineustes is an early member of the metriorhynchid subfamily Metriorhynchinae. The cladogram below is from an analysis by Mark Young and colleagues in 2020.[5]
| Metriorhynchinae |
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