Azenak, Aderbissinat (HB): Bajocian - Bathonian, Niger
collected by PALDES 2006

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Megalosauridae
Serrano-Martínez et al. 2016 1 specimen
MUPE HB-87
Soto et al. 2020
Serrano-Martínez et al. 2016 3 specimens
MUPE HB-118, 125, 142
Reptilia
Páramo et al. 2013 1 specimen
braincase
2 individuals
GCP-CV-4229/NMB-1699-R, NMB-1698-R
see common names

Geography
Country:Niger State/province:Agadez County:Tchirozerine
Coordinates: 16.7° North, 7.7° East (view map)
Paleocoordinates:3.5° North, 13.9° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period: Jurassic Epoch: Middle Jurassic
Stage: Bajocian - Bathonian 10 m.y. bin: Jurassic 4
Key time interval: Bajocian - Bathonian
Age range of interval: 170.9 - 165.3 m.y. ago
Stratigraphy
Geological group:Irhazer Formation:Irhazer II
Stratigraphic resolution:bed
Stratigraphy comments: base of group, below Tiourarén Fm.
Lithology and environment
Primary lithology:massive,planar lamination,red calcareous siltstone
Includes fossils?Y
Lithology description: "Both partial skeletons were found in a massive to finely laminated red siltstone containing some carbonate in its matrix. The siltstone layer is several meters thick and yielded the sauropod remains in its upper half."
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Disassociated minor elements:some
Fragmentation:occasional
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),mechanical,field collection
Reason for describing collection:taxonomic analysis
Collectors:PALDES Collection dates:2006
Collection method comments: Paleontologia y Desarrollo group
Metadata
Database number:104815
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2011-02-10 10:51:05 Last modified:2025-02-22 15:12:02
Access level:the public Released:2011-02-10 10:51:05
Creative Commons license:CC0
Reference information

Primary reference:
35082.ETE K. Remes, F. Ortega, I. Fierro, U. Joger, R. Kosma, J. M. M. Ferrer, Project, Niger Project, O. A. Ide and A. Maga. 2009. A new basal sauropod dinosaur from the Middle Jurassic of Niger and the early evolution of Sauropoda. PLoS One 4(9):e6924:1-13 [M. Carrano/M. Carrano]

Secondary references:

56215 F. Knoll, L. M. Witmer, F. Ortega, R. C. Ridgely, and D. Schwarz-Wings. 2012. The braincase of the basal sauropod dinosaur Spinophorosaurus and 3D reconstructions of the cranial endocast and inner ear. PLoS ONE 7(1):e30060:1-12 [M. Carrano/M. Carrano]
69060 A. Mudroch, U. Richter, U. Joger, R. Kosma, O. Idé and A. Maga. 2011. Didactyl tracks of paravian theropods (Maniraptora) from the ?Middle Jurassic of Africa. PLoS One 6(2):e14642:1-10 [M. Carrano/M. Carrano]
81334 A. Páramo, F. Escaso, and F. Ortega. 2013. A new sauropod braincase from Azenak (Agadez, Niger). In F. Torcida Fernández-Baldor & P. Huerta (ed.), VI Jornadas Internacionales sobre Paleontología de Dinosaurios y su Entorno. Libro de Resúmenes 98 [M. Carrano/M. Carrano]
71058 A. Serrano-Martínez, D. Vidal, L. Sciscio, F. Ortega, and F. Knoll. 2016. Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae. Acta Palaeontologica Polonica 61(2):403-415 [M. Carrano/M. Carrano]
73612 M. Soto, P. Toriño, and D. Perea. 2020. Ceratosaurus (Theropoda, Ceratosauria) teeth from the Tacuarembó Formation (Late Jurassic, Uruguay). Journal of South American Earth Sciences 103:102781:1-16 [O. Rauhut/O. Rauhut/M. Carrano]
60324 F. Witzmann, O. Hampe, B. M. Rothschild, U. Joger, R. Kosma, D. Schwarz, and P. Asbach. 2016. Subchondral cysts at synovial vertebral joints as analogies of Schmorl's Nodes in a sauropod dinosaur from Niger. Journal of Vertebrate Paleontology 36(2):e1080719:1-11 [M. Carrano/M. Carrano]