Maysville, (MAY1), Bellevue Formation, Kentucky: Caradoc, Kentucky
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Stenolaemata
- Trepostomata
- Halloporidae
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Halloporidae informal indet. A
Bassler 1911
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1 %-area | |||||||||
| Smooth, thick, branching halloporid bryozoans, fragmented | ||||||||||
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Halloporidae informal indet. B
Bassler 1911
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1 %-area | |||||||||
| Smooth, thin, branching halloporid trepostome, fragmented | ||||||||||
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Rhynchonellata
- Orthida
- Platystrophiidae
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Platystrophia laticosta
(James 1871)
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6 individuals | |||||||||
| original and current combination Orthis laticostata | ||||||||||
| 6 brachial valves, silicified | ||||||||||
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Rhynchonellata
- Orthida
- Plectorthidae
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Hebertella occidentalis
(Hall 1847)
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1 individual | |||||||||
| 1 pedicle valve, silicified | ||||||||||
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Bivalvia
- Lyrodesmatidae
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Lyrodesma ? inornatum
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Novack-Gottshall and Miller 2003 | 1 individual | ||||||||
| Tooth plate from fragmented valve | ||||||||||
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Gastropoda
- Bellerophontida
- Bellerophontidae
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Sphenosphaera ? capax
(Ulrich and Scofield 1897)
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Novack-Gottshall and Miller 2003 | 4 individuals | ||||||||
| 4 silicified shells | ||||||||||
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Gastropoda
- Murchisoniina
- Lophospiridae
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Lophospiridae indet.
Wenz 1938
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Novack-Gottshall and Miller 2003 | 1 individual | ||||||||
| Short, broad lophospirid, recrystallized shell | ||||||||||
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Lophospira bowdeni
(Safford 1869)
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Novack-Gottshall and Miller 2003 | 17 individuals | ||||||||
| recombined as Paupospira bowdeni | ||||||||||
| 17 specimens, silicified shells and casts | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Kentucky |
| Coordinates: | 38.7° North, 83.8° West (view map) | ||
| Paleocoordinates: | 27.3° South, 62.1° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | hand sample |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Caradoc | ||
| Age range of interval: | 458.40000 - 449.60000 m.y. ago |
Stratigraphy
| Formation: | Bellevue | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Middle Maysvillian age. Sample #1 collected. Details on stratigraphy and sedimentation (lithology), and additional details of gastropod and bivalve fauna are included from Novack-Gottshall and Miller (2003) [PBDB reference #18186] and field notes. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal lithified packstone | ||
| Includes fossils? | Y | ||
| Lithology description: Weathered, gastropod-rich packstone | |||
| Environment: | open shallow subtidal | Tectonic setting: | cratonic basin |
| Geology comments: Sequence C2 (from Holland and Patzkowsky, 1996) | |||
Taphonomy
| Modes of preservation: | body,cast,recrystallized,replaced with silica |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | random |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | common |
| Articulated whole bodies: | some |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Size sorting: | very poor |
| Fragmentation: | occasional |
| Encrustation: | none |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | bulk,mechanical,field collection |
| Collection size: | 30 specimens |
| Rock censused: | 323 cm2 (area) |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Bulk collection made in field and weighed, cleaned, prepped, and identified in lab at University of Cincinnati. Sample dimensions are 323.6 square-cm, weighing 1499 grams. Portion of slab by fault has been covered with "speleothem" and not sampled. At least 30 specimens counted; 30 individuals estimated (using half of total disarticulated specimens with two parts plus number of articulated/intact specimens). Fragmented trepostome bryozoans were counted as estimated percent cover using standard percent cover reference chart. | |
| Taxonomic list comments:Representative samples (standards) of species used for taxonomic identification reference are stored at the University of Cincinnati. Many unidentifiable bivalves are not included in taxonomic list. | |
Metadata
| Database number: | 64418 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Novack-Gottshall |
| Modifier: | P. Novack-Gottshall | Research group: | marine invertebrate |
| Created: | 2006-09-08 11:02:03 | Last modified: | 2024-03-31 19:20:47 |
| Access level: | the public | Released: | 2006-09-08 11:02:03 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18187. | P. M. Novack-Gottshall. 1999. Comparative geographic and environmental diversity dynamics of gastropods and bivalves during the Ordovician Radiation (M.S. thesis, University of Cincinnati). 1-191 [P. Novack-Gottshall/P. Novack-Gottshall/P. Novack-Gottshall] |
Secondary references:
| 18186 | P. M. Novack-Gottshall and A.I. Miller. 2003. Taxonomic richness and abundance of Late Ordovician gastropods and bivalves in mollusc-rich strata of the Cincinnati Arch. Palaios 18:559-571 [P. Novack-Gottshall/P. Novack-Gottshall] |