Bear Creek Quarry, (BC3), Chile: Edenian, Ohio
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Rafinesquina alternata
(Conrad 1838)
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3 individuals | |||||||||
| 3 pedicle valves | ||||||||||
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Rhynchonellata
- Atrypida
- Anazygidae
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Zygospira modesta
(Hall 1847)
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15 individuals | |||||||||
| 15 articulated specimens | ||||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Onniella multisecta
(James 1871)
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6 individuals | |||||||||
| recombined as Cincinnetina multisecta | ||||||||||
| 6 pedicle valves | ||||||||||
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Stenolaemata
- Trepostomata
- Halloporidae
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Halloporidae informal indet. A
Bassler 1911
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3 %-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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Gastropoda
- Bellerophontida
- Sinuitidae
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Sinuites granistriatus
(Ulrich and Scofield 1897)
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Novack-Gottshall and Miller 2003 | 2 individuals | ||||||||
| 2 internal molds | ||||||||||
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Gastropoda
- Murchisoniina
- Lophospiridae
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Lophospiridae indet.
Wenz 1938
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Novack-Gottshall and Miller 2003 | 6 individuals | ||||||||
| Short, broad lophospirid, possibly Lophospira bowdeni (=Paupospira bowdeni), 6 internal molds | ||||||||||
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Gastropoda
- Euomphalina
- Platyceratidae
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Cyclonema sp.
Hall 1852
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Novack-Gottshall and Miller 2003 | 1 individual | ||||||||
| 1 shell, recrystallized | ||||||||||
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Trilobita
- Phacopida
- Calymenidae
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Flexicalymene meeki
(Foerste 1910)
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1 individual | |||||||||
| 1 specimen, intact, articulated | ||||||||||
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Trilobita
- Asaphida
- Asaphidae
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Isotelus maximus
Locke 1838
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1 individual | |||||||||
| 1 spine and fragments, approximately 3% by area | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Ohio | County: | Washington |
| Coordinates: | 38.8° North, 84.2° West (view map) | ||||
| Paleocoordinates: | 27.0° South, 62.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | hand sample |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| Key time interval: | Edenian | Conodont zone: | Oulodus velicuspis |
| Age range of interval: | 451.10000 - 450.40000 m.y. ago |
Stratigraphy
| Formation: | Kope | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Middle Edenian age. Sample #3 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: | flute casts,grading,shelly/skeletal lithified wackestone | ||
| Secondary lithology: | lithified "shale" | ||
| Includes fossils? | Y | ||
| Lithology description: Lenticular, fossiliferous wackestone/packstone in shale. Sample is a portion of a wackestone with graded flute cast along bottom. | |||
| Environment: | offshore shelf | Tectonic setting: | cratonic basin |
| Geology comments: Sequence C1 (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: | poor |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | bulk,mechanical,field collection |
| Collection size: | 35 specimens |
| Rock censused: | 835 g |
| 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 322.6 square-cm, weighing 835 grams. At least 35 specimens counted; 33 individuals estimated (using half of total disarticulated specimens with two parts plus number of articulated/intact specimens). Fragmented trepostome bryozoans, crinoid columnals, and fragmented trilobites 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: | 64426 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Novack-Gottshall |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2006-09-08 13:56:32 | Last modified: | 2018-03-28 23:24:21 |
| Access level: | the public | Released: | 2006-09-08 13:56:32 |
| 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] |