Christ Hospital, (CHS32), Miamitown Shale, Cincinnati, Ohio: Caradocian, Ohio

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Murchisoniina - Lophospiridae
Lophospira bowdeni (Safford 1869)
Novack-Gottshall and Miller 2003 13 individuals
recombined as Paupospira bowdeni
13 large internal molds; count only includes specimens with more than two whorls
Bivalvia - Ostreida - Pterineidae
Caritodens demissa (Conrad 1842)
Novack-Gottshall and Miller 2003 1 individual
recombined as Pterinea demissa
1 recrystallized valve
Strophomenata - Strophomenida - Rafinesquinidae
Rafinesquina alternata (Conrad 1838)
5 individuals
5 brachial, 2 pedicle valves
Rhynchonellata - Orthida - Plectorthidae
Hebertella occidentalis (Hall 1847)
4 individuals
4 brachial valves
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia sp. King 1850
1 individual
2 indeterminate valves, disarticulated
Rhynchonellata - Atrypida - Anazygidae
Zygospira modesta (Hall 1847)
60 individuals
60 complete, articulated specimens
Stenolaemata - Cryptostomata
Cryptostomata indet. Vine 1884
1 %-area
Thin, sheet-branching cryptostomate bryozoan, fragmented
Stenolaemata - Trepostomata - Halloporidae
Halloporidae informal indet. A Bassler 1911
4 %-area
Monticulated, large, thick halloporid trepostome, fragmented
Halloporidae informal indet. B Bassler 1911
10 %-area
Smooth, thin, branching halloporid trepostome, fragmented
Stenolaemata - Trepostomida - Monticuliporidae
Aspidopora sp. Ulrich 1882
2 individuals
2 colonies
Trilobita - Odontopleurida - Odontopleuridae
Acidaspis cincinnatiensis
1 individual
1 cephalon
Trilobita - Phacopida - Calymenidae
Calymenidae indet. Milne-Edwards 1840
1 individual
1 cephalon
Flexicalymene meeki (Foerste 1910)
1 individual
1 cephalon, 1 body fragment (articulated sclerites but missing cephalon and pygidium); probably associated remains
Crinoidea
Crinoidea indet. Miller 1821
1 individual
1 columnal, approximately 1% coverage (by area)
see common names

Geography
Country:United States State/province:Ohio
Coordinates: 39.1° North, 84.5° West (view map)
Paleocoordinates:26.6° 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:Miamitown
Stratigraphic resolution:bed
Stratigraphy comments: Lower Maysvillian age. Sample #32 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
Secondary lithology: lithified "shale"
Includes fossils?Y
Lithology description: Shale interbedded with gastropod-rich wackestone/packstone
Environment:deep subtidal shelf Tectonic setting:cratonic basin
Geology comments: Sequence C2 (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:abundant
Articulated whole bodies:some
Associated major elements:some
Disassociated major elements:some
Disassociated minor elements:some
Size sorting:very poor
Fragmentation:occasional
Encrustation:occasional
Temporal resolution:snapshot
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:bulk,mechanical,field collection
Collection size:94 specimens
Rock censused:813 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 812.9 square-cm. At least 94 specimens counted; 89 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:64423
Authorizer:P. Novack-Gottshall Enterer:P. Novack-Gottshall
Modifier:P. Novack-Gottshall Research group:marine invertebrate
Created:2006-09-08 12:13:27 Last modified:2006-09-08 16:16:32
Access level:the public Released:2006-09-08 12:13:27
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]