Pycnonemosaurus
From Greek 'pyknos' (dense, thick) + 'nemos' (woodland, forest) + 'sauros' (lizard), meaning 'dense forest lizard'.
Late Cretaceous stages
Pycnonemosaurus is a genus of carnivorous theropod dinosaur that belonged to the family Abelisauridae. It was found in the Upper Cretaceous red conglomerate sandstones of the Cachoeira do Bom Jardim Formation, Mato Grosso, Brazil, and it lived during the late Campanian to early Maastrichtian stage of the Late Cretaceous.
Diagnosis
- Tibia with hatchet-shaped cnemial crest in side view with constricted neck (150 mm) and expanded distal end (195 mm)
- Pubis with relatively small pubic foot (243 mm, less than 30% of preserved pubic length) with protuberance on anterolateral surface
- Caudal vertebrae with moderate distal expansion of transverse processes, less pronounced than Carnotaurus
Species
Pycnonemosaurus nevesi Kellner & Campos, 2002
Type species
Named for Dr. Iedo Batista Neves, who died in 2000 and who encouraged the pursuit of paleontological studies, particularly those of describer Alexander Kellner.
- Holotype
- DGM 859-R , Museu da Divisão de Geologia e Mineralogia
- Material
- Teeth and postcranial fragments
- Horizon
- Parecis Group, Campanian–Maastrichtian, Late Cretaceous , 83.6–66.0 million years ago
- Locality
- Fazenda Roncador, Mato Grosso, Brazil
References
- Kellner, A. W. A.; Campos, D. D. A. (2002). On a theropod dinosaur (Abelisauria) from the continental Cretaceous of Brazil. Arquivos do Museu Nacional, Rio de Janeiro 60(3): 163-170. doi:10.5281/zenodo.13660782 kellner2002a