Buildex Inc. Quarry: Late/Upper Albian, Kansas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Hybodontiformes
- Polyacrodontidae
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"Polyacrodus" sp.
Jaekel 1889
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Kansas | County: | McPherson |
| Coordinates: | 38.6° North, 97.8° West (view map) | ||||
| Paleocoordinates: | 35.8° North, 58.4° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Late/Upper Albian | ||
| Age range of interval: | 106.20000 - 100.50000 m.y. ago |
Stratigraphy
| Formation: | Kiowa | ||||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: said to be in the Inoceramus comancheanus zone and "approximately middle Late Albian" from "the upper one-third of the strata exposed at the quarry" and the unit is "between 30 and 40 m thick in central Kansas" | |||||
Lithology and environment
| Primary lithology: | gray "shale" |
| Secondary lithology: | concretionary,glauconitic,hematitic,pyritic,sideritic,gray poorly lithified sandstone |
| Lithology description: "mining shale... thin layers of poorly cemented gray sandstone... interbedded with gray shale... [sandstone includes] abundant iron pyrite [and in one layer is] glauconitic... intermingled with large siderite nodules... [another layer is] pyritized, sandy conglomerate resting on top of a layer of poorly cemented sandstone" | |
| Environment: | coastal indet. |
| Geology comments: "near-shore marine" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection excludes: | some genera |
| Collection methods: | surface (float),surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: at least some material in situ and other material "from the surface"
material reposited in the Fort Hays State University Sternberg Museum of Natural History | |
| Taxonomic list comments:unspecified "sharks, bony fish and reptiles" are present: complete list given by J. C. Beamon 1999 (unpublished M.S. thesis) | |
Metadata
| Database number: | 38111 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Alroy | Research group: | marine invertebrate,vertebrate |
| Created: | 2004-04-12 11:20:14 | Last modified: | 2006-09-07 18:27:30 |
| Access level: | the public | Released: | 2004-04-12 11:20:14 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 10232. | M. J. Everhart. 2004. First record of the hybodont shark genus, "Polyacrodus" sp., (Chondrichthyes; Polyacrodontidae) from the Kiowa Formation (Lower Cretaceous) of McPherson County, Kansas. Transactions of the Kansas Academy of Science 107(1/2):83-87 [J. Alroy/J. Alroy/J. Alroy] |