Agua Formosa Creek road cut, near base: Late/Upper Campanian - Early/Lower Maastrichtian, Brazil

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Mariliasuchus amarali Carvalho and Bertini 1999
MN6756-V (partial skull with the naris, the orbital, and palatal regions preserved, but lacking the braincase and temporal regions)
unclassified
Skolithos sp. Haldemann 1840
see common names

Geography
Country:Brazil State/province:São Paulo County:Marília
Coordinates: 22.3° South, 49.9° West (view map)
Paleocoordinates:26.5° South, 33.1° West
Basis of coordinate:stated in text
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Key time interval:Late/Upper Campanian - Early/Lower Maastrichtian
Age range of interval:83.60000 - 66.00000 m.y. ago
Stratigraphy
Geological group:Bauru Formation:Adamantina
Stratigraphy comments: Lower part in the road section

Whereas a Turonian–Santonian age for the Adamantina Formation, based on ostracods and charophytes, has been proposed (Dias-Brito et al. 2001), other authors have argued for a Campanian–Maastrichtian age, based on vertebrate fossils and an alternative interpretation of the ostracod fauna (e.g. Gobbo-Rodrigues et al. 1999; Fernandes and Coimbra 2000). Most recently, stratigraphic work on the Bauru Basin has argued for a late Campanian–early Maastrichtian age for this stratigraphic unit (Batezelli 2017).
Lithology and environment
Primary lithology:massive,brown mudstone
Includes fossils?Y
Lithology description: Brown massive to slightly stratified mudstone with calcite cemenet
Environment:loess
Geology comments: Loess; Peripheral desert with sporadic (seasonal?) rainfall and restricted flooding in ephemeral ponds
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Mariliasuchus amarali referred material
Database number:114204
Authorizer:P. Mannion Enterer:P. Mannion
Modifier:P. Mannion
Created:2011-08-11 23:07:43 Last modified:2017-09-29 07:16:20
Access level:the public Released:2011-08-11 23:07:43
Creative Commons license:CC BY
Reference information

Primary reference:
37067. H. Zaher, D. Pol, A. B. Carvalho, C. Riccomini, D. Campos and W. Nava. 2006. Redescription of the Cranial Morphology of Mariliasuchus amarali, and Its Phylogenetic Affinities (Crocodyliformes, Notosuchia). American Museum Novitates 3512:1-40 [P. Mannion/P. Mannion]