Ohio State Route 32 section, (27.2 m height, Lilley Fm.), Adams Co., Ohio: Sheinwoodian, Ohio
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Conodonta
- Ozarkodinida
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Ozarkodina sagitta
(Walliser 1964)
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10 elements | |||||||||
| sagitta | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Ohio | County: | Adams |
| Coordinates: | 38.9° North, 83.5° West (view map) | ||||
| Paleocoordinates: | 28.3° South, 51.2° West | ||||
| Basis of coordinate: | stated in text |
Time
| Period: | Silurian | Epoch: | Wenlock |
| Stage: | Sheinwoodian | 10 m.y. bin: | Silurian 2 |
| *International age/stage: | Sheinwood | ||
| Key time interval: | Sheinwoodian | Zone: | Ozarkodina sagitta sagitta |
| Age range of interval: | 433.4 - 430.5 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Lilley | Local bed: | 83MK1, 27.2 m | ||
| Stratigraphy comments: Meters above base: 27.2 |
Lithology and environment
| Primary lithology: | argillaceous dolomite |
| Environment: | shallow subtidal indet. |
| Geology comments: "The basal Lilley is a massive crinoidal dolomite (skeletal packstone or grainstone) and displays herring-bone crossbedding [not on his strat. column]...Fossils are very abundant in the Lilley...The very argillaceous dolomite beds (wackestones) in the middle of the fm. are an exception...Although all the samples from that part of the Lilley are dolomitized, it is possible to determine that most of the Lilley deposits excluding the argillaceous dolomite were skeletal packstones. Skeletal grains are predominantly echinoderm (crinoid) debris although brachiopod and bryozoan fragments are also present...The conodont fauna...is characteristic of strongly agitated shallow water environments." | |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Conodonts only. Author does indicate there are other taxa present. | |
Metadata
| Database number: | 1143 | ||
| Authorizer: | J. Alroy | Enterer: | M. Sommers |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 1999-03-16 14:17:02 | Last modified: | 2006-09-14 19:58:14 |
| Access level: | the public | Released: | 2000-11-20 13:53:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 35. | M. A. Kleffner. 1990. Wenlockian (Silurian) conodont biostratigraphy, depositional environments, and depositional history along the eastern flank of the Cincinnati Arch in southern Ohio. Journal of Paleontology 64(2):319-328 [J. Alroy/M. Sommers/J. Alroy] |