Temporal range: Late Cretaceous, Early Maastrichtian
Right dentary of the holotype
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Dinosauria
Order: Ornithischia
Family: Hadrosauridae
Subfamily: Lambeosaurinae
Genus: Adynomosaurus
Prieto-Márquez et al., 2019
Type species
Adynomosaurus arcanus
Prieto-Márquez et al., 2019
Adynomosaurus ("weak shoulder lizard", in reference to the unexpanded shoulder blade) is a genus of lambeosaurine hadrosaurid dinosaur from the Late Cretaceous of what is now Catalonia, Spain. The type and only species is A. arcanus ("secret" or "occult", alluding "to the elusive findings of taxonomically informative skeletal elements of this and other hadrosaurids in the South-Central Pyrenean Basin"). It is based on MCD 7125 (Museu de la Conca Dellà, Isona, Lleida, Spain), a right scapula. This bone was one of a group of 34 bones recovered from the discovery site; the other bones have also been assigned to Adynomosaurus arcanus, and include vertebrae from the neck, sacrum, and tail, a sternal element, part of the pelvis, and parts of the forelimbs and hindlimbs. The discovery site, the Costa de les Solanes locality, is in rocks of the upper lower Maastrichtian Conques Formation.[1]


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