ammonites

Toothawarra Creek: Late/Upper Maastrichtian, Australia
collected by E. Car 1960

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:Australia State/province:Western Australia
Coordinates: 22.7° South, 114.0° East (view map)
Paleocoordinates:49.6° South, 100.2° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Late/Upper Maastrichtian
Age range of interval:70.6 - 65.5 m.y. ago
Stratigraphy
Formation:Miria
Stratigraphy comments: Late Maastrichtian age indicated by ammonites, forams and other microfossils.
Lithology and environment
Primary lithology:condensed,nodular,phosphatic grainstone
Includes fossils?Y
Lithology description: "Cream coloured calcarenite with abundant phosphatic grains and nodules"
Environment:open shallow subtidal
Glacial or sequence phase:transgressive
Geology comments: "The deposition of the Miria Formation began in the wake of a Late Maastrichtian marine transgression, resulting in quiet shelf deposits in the northern Carnarvon Basin...the unit has been condensed, with fragmentary fossil preservation indicating periods of higher water energy which winnowed the sequence"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Disassociated major elements:all
Fragmentation:frequent
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collectors:E. Car Collection dates:1960
Collection method comments: WAM: Western Australian Museum
Metadata
Database number:92270
Authorizer:R. Butler Enterer:R. Butler
Research group:vertebrate
Created:2009-11-04 08:30:45 Last modified:2009-11-04 08:30:45
Access level:the public Released:2009-11-04 08:30:45
Reference information
Primary reference:
31087 S. C. Bennett and J. A. Long. 1991. A large pterodactyloid pterosaur from the Late Cretaceous (Late Maastrichtian) of Western Australia. Records of the Western Australian Museum 15(2):435-443 [R. Butler/R. Butler]