Genus: Brachytrachelopan RAUHUT, REMES, FECHNER, CLADERA & PUERTA,
Etymology: Greek, brachytrachelos, brachys, "short," and tráchi̱los, "scruff, neck," in reference to the short neck, and the Greek shepard god Pan.
Species: mesaorum emend RAUHUT, REMES, FECHNER, CLADERA & PUERTA,
= Brachytrachelopan mesai RAUHUT, REMES, FECHNER, CLADERA & PUERTA, 2005
Etymology: In honor of Daniel Mesa, who found the specimen while looking for stray sheep and his family.
Holotype: MPEF-PV 1716
Locality: On the summit of a hill about 25 km north-northeast of the village of Cerro Condor (exact locality data are avilable from the authors on request), Chubut Province, Patagonia, Argentina.
Horizon: Candon Calaero Formation.
Age: Tithonian Stage, Upper Malm Epoch, Late Jurassic.
Material: 8 cervical, 12 dorsal and 3 sacral vertebrae, proximal parts of the posterior cervical and all dorsal ribs, right ilium, distal part of left femur adn proximal end of the left tibia.
A, B, C) Cervical vertebrae; D, E, F) Dorsal vertebrae; G) Last cervicals and dorsals.