Ashlock Cemetary, (AG4): Maysvillian, Kentucky
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tergomya
- Cyrtonellida
- Cyrtolitidae
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Cyrtolites ? ornatus
Conrad 1838
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Novack-Gottshall and Miller 2003 | 1 individual | ||||||||
1 specimen, unclear whether recrystallized, internal mold, or organic cast (bryozoan encrustation) | ||||||||||
Gastropoda
- Murchisoniina
- Lophospiridae
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Lophospira ? bowdeni
(Safford 1869)
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Novack-Gottshall and Miller 2003 | 4 individuals | ||||||||
recombined as Paupospira bowdeni | ||||||||||
4 specimens, internal molds | ||||||||||
Gastropoda
- Bellerophontida
- Tropidodiscidae
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Tropidodiscus sp.
Meek and Worthen 1866
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Novack-Gottshall and Miller 2003 | 1 individual | ||||||||
1 specimen | ||||||||||
Bivalvia
- Myalinida
- Ambonychiidae
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Ambonychia sp.
Hall 1847
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Novack-Gottshall and Miller 2003 | 2 individuals | ||||||||
1 articulated specimen, 1 isolated valve | ||||||||||
Bivalvia
- Ostreida
- Pterineidae
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Caritodens demissa
(Conrad 1842)
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Novack-Gottshall and Miller 2003 | 1 individual | ||||||||
recombined as Pterinea demissa | ||||||||||
1 disarticulated valve | ||||||||||
Bivalvia
- Colpomyida
- Colpomyidae
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Ischyrodonta ? elongata
Ulrich 1890
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Novack-Gottshall and Miller 2003 | 1 individual | ||||||||
recombined as Pseudocolpomya elongata | ||||||||||
2 disarticulated valves | ||||||||||
Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena richmondensis
Foerste 1909
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1 individual | |||||||||
1 valve | ||||||||||
Rhynchonellata
- Orthida
- Platystrophiidae
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Platystrophia ponderosa
Foerste 1909
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4 individuals | |||||||||
4 brachial and 2 pedicle valves | ||||||||||
Rhynchonellata
- Orthida
- Dalmanellidae
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Onniella meeki
(Miller 1875)
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1 individual | |||||||||
recombined as Cincinnetina meeki | ||||||||||
1 pedicle valve | ||||||||||
Craniata
- Craniida
- Craniidae
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Petrocrania scabiosa
(Hall 1866)
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2 individuals | |||||||||
3 valves, disarticulated | ||||||||||
Stenolaemata
- Cryptostomata
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Cryptostomata indet.
Vine 1884
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2 %-area | |||||||||
Thin, sheet-branching cryptostomate bryozoan, fragmented | ||||||||||
Stenolaemata
- Trepostomata
- Halloporidae
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Halloporidae informal indet. A
Bassler 1911
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2 %-area | |||||||||
Encrusting halloporid trepostome | ||||||||||
Halloporidae informal indet. B
Bassler 1911
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3 %-area | |||||||||
Smooth, thick, branching halloporid bryozoans, fragmented | ||||||||||
Halloporidae informal indet. C
Bassler 1911
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2 %-area | |||||||||
Smooth, thin, branching halloporid trepostome, fragmented | ||||||||||
Trilobita
- Asaphida
- Asaphidae
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Isotelus ? maximus
Locke 1838
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1 individual | |||||||||
1 hypostome | ||||||||||
Crinoidea
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Crinoidea indet.
Miller 1821
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1 %-area | |||||||||
Disarticulated columnals | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Kentucky |
Coordinates: | 37.6° North, 84.6° West (view map) | ||
Paleocoordinates: | 27.4° South, 61.4° West | ||
Basis of coordinate: | estimated from map | ||
Geographic resolution: | hand sample |
Time
Period: | Ordovician | Epoch: | Late/Upper Ordovician |
Stage: | middle Late Ordovician | 10 m.y. bin: | Ordovician 4 |
Key time interval: | Maysvillian | ||
Age range of interval: | 452.00000 - 449.50000 m.y. ago |
Stratigraphy
Formation: | Gilbert | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Late Maysvillian age. Sample #4 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,gray lithified "limestone" | ||
Secondary lithology: | lithified silty "shale" | ||
Includes fossils? | Y | ||
Lithology description: Dark blue-gray, nodular, irregularly bedded limestone interbedded with silty shale. | |||
Environment: | lagoonal/restricted shallow subtidal | Tectonic setting: | cratonic basin |
Glacial or sequence phase: | transgressive | ||
Geology comments: Peritidal lagoon. Sequence C3 (from Holland and Patzkowsky, 1996) |
Taphonomy
Modes of preservation: | body,mold/impression,recrystallized,original calcite,replaced with calcite |
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: | frequent |
Encrustation: | occasional |
Temporal resolution: | snapshot |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | bulk,mechanical,field collection |
Collection size: | 24 specimens |
Rock censused: | 400 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 400.0 square-cm, weighing 1534 grams. At least 24 specimens counted; 19 individuals estimated (using half of total disarticulated specimens with two parts plus number of articulated/intact specimens). Fragmented trepostome bryozoans, trilobites, and crinoid columnals 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
Also known as: | Ashlock Cemetary, (AG4), Gilbert Formation, Kentucky | ||
Database number: | 64403 | ||
Authorizer: | P. Novack-Gottshall | Enterer: | P. Novack-Gottshall |
Modifier: | P. Wagner | Research group: | marine invertebrate |
Created: | 2006-09-07 15:42:13 | Last modified: | 2019-08-19 14:32:27 |
Access level: | the public | Released: | 2006-09-07 15:42:13 |
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] |