ammonites

El Pelillal tracksite: Late/Upper Campanian, Mexico
collected 2000

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:Mexico State/province:Coahuila County:Ramos Arizpe
Coordinates: 26.1° North, 101.1° West (view map)
Paleocoordinates:32.2° North, 75.5° West
Basis of coordinate:stated in text
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Late/Upper Campanian
Age range of interval:83.5 - 70.6 m.y. ago
Stratigraphy
Formation:Cerro del Pueblo
Stratigraphy comments: "upper" part of formation
Lithology and environment
Primary lithology:bioturbation,fine,red or brown sandstone
Includes fossils?Y
Lithology description: "reddish to light-brown, fine-grained, intensely bioturbated and ripple-marked sandstone that in some areas bears root traces"
Environment:fluvial-deltaic indet.
Geology comments: "shallow freshwater or lacustrine"
Taphonomy
Modes of preservation:trace
Size of fossils:macrofossils
Spatial orientation:life position
Preservation of anatomical detail:good
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection dates:2000
Metadata
Database number:92297
Authorizer:R. Butler Enterer:R. Butler
Research group:vertebrate
Created:2009-11-05 07:43:27 Last modified:2009-11-05 07:43:27
Access level:the public Released:2009-11-05 07:43:27
Reference information
Primary reference:
31108 R. A. Rodriguez-de la Rosa. 2003. Pterosaur tracks from the latest Campanian Cerro del Pueblo Formation of southeastern Coahuila, Mexico. In E. Buffetaut, J.-M. Mazin (eds.), Evolution and Palaeobiology of Pterosaurs. Geological Society, London, Special Publications 217:275-282 [R. Butler/R. Butler/R. Butler]