Bear Creek Quarry, (BC7), Kope Formation, Chile, Ohio: Caradocian, Ohio

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Orthocerida - Proteoceratidae
Treptoceras duseri (Hall and Whitfield 1875)
1 individual
1 phragmocone with recrystallized shell
Tergomya - Cyrtonellida - Cyrtolitidae
Cyrtolites claysferryensis (Wahlman 1992)
Novack-Gottshall and Miller 2003 1 individual
1 recrystallized specimen
Gastropoda - Murchisoniina - Lophospiridae
Lophospira ? bowdeni (Safford 1869)
Novack-Gottshall and Miller 2003 3 individuals
recombined as Paupospira bowdeni
3 internal molds, specimens slightly shorter than typical Lophospira (=Pauopspira) bowdeni
Gastropoda - Bellerophontida - Sinuitidae
Sinuites granistriatus (Ulrich and Scofield 1897)
Novack-Gottshall and Miller 2003 10 individuals
10 intact shells, all internal molds
Gastropoda - Bellerophontida - Plectonotidae
Tetranota bidorsata (Hall 1847)
Novack-Gottshall and Miller 2003 1 individual
1 recrystallized specimen
Bivalvia - Myalinida - Ambonychiidae
Ambonychia sp. Hall 1847
Novack-Gottshall and Miller 2003 1 individual
1 valve, unsure whether internal mold or cast
Strophomenata - Strophomenida - Rafinesquinidae
Rafinesquina alternata (Conrad 1838)
1 individual
1 pedicle valve
Rhynchonellata - Orthida - Dalmanellidae
Onniella multisecta (James 1871)
3 individuals
recombined as Cincinnetina multisecta
3 pedicle valves
Rhynchonellata - Atrypida - Anazygidae
Zygospira modesta (Hall 1847)
2 individuals
2 articulated specimens
Stenolaemata - Trepostomata - Halloporidae
Halloporidae indet. Bassler 1911
5 %-area
Smooth, thick, branching halloporid bryozoans, fragmented
Trilobita - Asaphida - Asaphidae
Isotelus ? maximus Locke 1838
1 %-area
Fragmented
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
10 m.y. bin:Ordovician 4
Key time interval:Caradocian
Age range of interval:460.90000 - 449.50000 m.y. ago
Stratigraphy
Formation:Kope
Stratigraphic resolution:bed
Stratigraphy comments: Middle Edenian age. Sample #7 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 wackestone
Secondary lithology: lithified "shale"
Includes fossils?Y
Lithology description: Lenticular, mollusc-rich wackestone/packstone in thick shale bed.
Environment:offshore shelf Tectonic setting:cratonic basin
Geology comments: Sequence C1 (from Holland and Patzkowsky, 1996)
Taphonomy
Modes of preservation:body,cast,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
Fragmentation:occasional
Temporal resolution:snapshot
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:bulk,mechanical,field collection
Collection size:23 specimens
Rock censused:4997 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 935.5 square-cm, weighing 4997 grams. At least 23 specimens counted; 23 individuals estimated (using half of total disarticulated specimens with two parts plus number of articulated/intact specimens). Fragmented trepostome bryozoans 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:64476
Authorizer:P. Novack-Gottshall Enterer:P. Novack-Gottshall
Research group:marine invertebrate
Created:2006-09-09 07:37:38 Last modified:2006-09-09 10:37:39
Access level:the public Released:2006-09-09 07:37:37
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]