ammonites

Big Bend: Late/Upper Maastrichtian, Texas
collected by Lawson

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:United States State/province:Texas County:Brewster
Coordinates: 29.3° North, 103.3° West (view map)
Paleocoordinates:35.9° North, 82.6° West
Basis of coordinate:based on nearby landmark
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
Geological group:Tornillo Formation:Javelina
Stratigraphic resolution:bed
Stratigraphy comments: Found 110-140 m above the base of the Tornillo Group
Lithology and environment
Primary lithology:fine sandstone
Includes fossils?Y
Environment:fluvial indet.
Geology comments: "braided stream"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Associated major elements:all
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:TMM
Collectors:Lawson
Metadata
Also known as:Quetzalcoatlus holotype site
Database number:92251
Authorizer:R. Butler Enterer:R. Butler
Research group:vertebrate
Created:2009-11-04 07:02:13 Last modified:2009-11-04 07:02:13
Access level:the public Released:2009-11-04 07:02:13
Reference information
Primary reference:
31083 D. A. Lawson. 1975. Pterosaur from the latest Cretaceous of West Texas: discovery of the largest flying creature. Science 187:947-948 [R. Butler/R. Butler]

Secondary references:

31084 D. A. Lawson. 1975. Could pterosaurs fly?. Science 188:676-677 [R. Butler/R. Butler]