Eurypterids of the Keefer Sst. Mbr, Mifflintown Fmn., Hancock, Maryland: Wenlock, Maryland

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Xiphosura - Xiphosurida
? Erettopterus sp.
Genus name corrected from "Erretoperus" as given.
Xiphosura - Xiphosurida - Pterygotidae
Pterygotus marylandicus
see common names

Country:United States State/province:Maryland
Coordinates: 39.7° North, 78.2° West (view map)
Paleocoordinates:30.3° South, 45.9° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Period:Silurian Epoch:Wenlock
10 m.y. bin:Silurian 2
*Epoch:Early/Lower Wenlock
Key time interval:Wenlock
Age range of interval:433.40000 - 427.40000 m.y. ago
* legacy (obsolete) database fields
Formation:Mifflintown Member:Keefer
Stratigraphic resolution:member
Stratigraphy comments: "Black shale interbedded in the Keefer Sst."
Lithology and environment
Primary lithology:black "shale"
Includes fossils?Y
Lithology description: "Black shale interbedded in the Keefer Sandstone Member of the Mifflintown Formation."
Environment:marginal marine indet. Tectonic setting:foreland basin
Geology comments: Environment given as ?marine.
SEP environmental call based on scanty given info. and knowledge of regional geology
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Taxonomic list comments:"Associated biota: none reported."
Database number:14193
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-05-23 04:16:50 Last modified:2006-09-15 15:14:05
Access level:the public Released:2002-05-23 04:16:50
Creative Commons license:CC BY
Reference information

Primary reference:

4261. R. E. Plotnick. 1999. Habitat of Llandoverian-Lochkovian eurypterids. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian 106-136 [M. Foote/M. Foote/P. Wagner]