Brachytrachelopan mesai was a bizarre short-necked sauropod dinosaur that inhabited the Chubut province of Argentina during the Late Jurassic period, approximately 150 million years ago.
Facts
| Period | Jurassic |
| Age | 150 million years old |
| Diet | Herbivore |
| Height | 2m at the hips |
| Length | 10 metres |
| Weight | roughly 1.5 tonnes |
| Discovered at | Canadón Calcáreo Formation, Chubut, Argentina (2005). |
| Discovered by | Oliver Rauhut, Pablo Puerta et al (holotype MEF) |