Bell County: Coniacian - Santonian, Texas
collected by D.H. Walker 1880

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Phymosomatidae
Pseudodiadema hilli n. sp. Clark 1891
recombined as Phymosoma hilli
see common names

Geography
Country:United States State/province:Texas County:Bell
Coordinates: 31.1° North, 97.5° West (view map)
Paleocoordinates:33.1° North, 66.3° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
10 m.y. bin:Cretaceous 6
Key time interval:Coniacian - Santonian
Age range of interval:89.80000 - 83.60000 m.y. ago
Stratigraphy
Formation:Austin Chalk
Stratigraphic resolution:bed
Stratigraphy comments: probably Austin Chalk
Lithology and environment
Primary lithology: chalk
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collectors:D.H. Walker Collection dates:1880
Metadata
Database number:78104
Authorizer:W. Kiessling Enterer:U. Merkel
Modifier:M. Clapham Research group:marine invertebrate
Created:2008-01-28 07:22:16 Last modified:2018-10-21 18:33:48
Access level:the public Released:2008-01-28 07:22:16
Creative Commons license:CC BY
Reference information

Primary reference:
26335.1% 20600C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham]