USGS 18587, Tequesquite Creek: Early/Lower Campanian, Texas
collected by R.R. Bennett
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea
- Cidaroida
- Cidaridae
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Cidaris texanus
Clark 1891
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see common names |
Geography
Country: | United States | State/province: | Texas | County: | Maverick |
Coordinates: | 29.1° North, 100.6° West (view map) | ||||
Paleocoordinates: | 34.9° North, 74.1° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
Key time interval: | Early/Lower Campanian | ||
Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
Formation: | Austin Chalk | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Upper part of Austin Chalk. At Tequesquite Creek, the upper Austin Chalk includes the upper Santonian Texanites shiloensis zone and the lower Campanian Submortoniceras tequesquitense and Menabites delawarensis zones. Cidaris texanus is late Early Campanian elsewhere. |
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 |
Museum repositories: | USNM |
Collectors: | R.R. Bennett |
Metadata
Database number: | 78198 | ||
Authorizer: | W. Kiessling | Enterer: | U. Merkel |
Modifier: | M. Clapham | Research group: | marine invertebrate |
Created: | 2008-01-31 01:32:36 | Last modified: | 2018-10-20 21:48:57 |
Access level: | the public | Released: | 2008-01-31 01:32:36 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
26335. | 1% 20600 | C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham] |