Ashlock Cemetary, (AG4): Maysvillian, Kentucky

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tergomya - Cyrtonellida - Cyrtolitidae
Cyrtolites ? ornatus Conrad 1838
Novack-Gottshall and Miller 2003 1 individual
1 specimen, unclear whether recrystallized, internal mold, or organic cast (bryozoan encrustation)
Gastropoda - Murchisoniina - Lophospiridae
Lophospira ? bowdeni (Safford 1869)
Novack-Gottshall and Miller 2003 4 individuals
recombined as Paupospira bowdeni
4 specimens, internal molds
Gastropoda - Bellerophontida - Tropidodiscidae
Tropidodiscus sp. Meek and Worthen 1866
Novack-Gottshall and Miller 2003 1 individual
1 specimen
Bivalvia - Myalinida - Ambonychiidae
Ambonychia sp. Hall 1847
Novack-Gottshall and Miller 2003 2 individuals
1 articulated specimen, 1 isolated valve
Bivalvia - Ostreida - Pterineidae
Caritodens demissa (Conrad 1842)
Novack-Gottshall and Miller 2003 1 individual
recombined as Pterinea demissa
1 disarticulated valve
Bivalvia - Colpomyida - Colpomyidae
Ischyrodonta ? elongata Ulrich 1890
Novack-Gottshall and Miller 2003 1 individual
recombined as Pseudocolpomya elongata
2 disarticulated valves
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena richmondensis Foerste 1909
1 individual
1 valve
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia ponderosa Foerste 1909
4 individuals
4 brachial and 2 pedicle valves
Rhynchonellata - Orthida - Dalmanellidae
Onniella meeki (Miller 1875)
1 individual
recombined as Cincinnetina meeki
1 pedicle valve
Craniata - Craniida - Craniidae
Petrocrania scabiosa (Hall 1866)
2 individuals
3 valves, disarticulated
Stenolaemata - Cryptostomata
Cryptostomata indet. Vine 1884
2 %-area
Thin, sheet-branching cryptostomate bryozoan, fragmented
Stenolaemata - Trepostomata - Halloporidae
Halloporidae informal indet. A Bassler 1911
2 %-area
Encrusting halloporid trepostome
Halloporidae informal indet. B Bassler 1911
3 %-area
Smooth, thick, branching halloporid bryozoans, fragmented
Halloporidae informal indet. C Bassler 1911
2 %-area
Smooth, thin, branching halloporid trepostome, fragmented
Trilobita - Asaphida - Asaphidae
Isotelus ? maximus Locke 1838
1 individual
1 hypostome
Crinoidea
Crinoidea indet. Miller 1821
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]