Williams Canyon (Ordovician of the United States)

Where: El Paso County, Colorado (38.9° N, 105.0° W: paleocoordinates 14.1° S, 78.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Manitou Limestone Formation, Dapingian (470.0 - 467.3 Ma)

• formation-level stratigraphic resolution

Environment/lithology: lithified, coarse-grained limestone

• The Manitou formation consists of finely to coarsely crystalline limestone and minor amounts of dolomite at its type location (from http://home.earthlink.net/~gesuchan/Fossil/Manitou_Park/Field_Trip.htm)

Size classes: macrofossils, mesofossils

Preservation: recrystallized, original aragonite, replaced with silica

Primary reference: E. O. Ulrich, A. F. Foerste, and A.K. Miller. 1943. Ozarkian and Canadian cephalopods. Part II, Brevicones. Geological Society of America Special Papers 49:1-240 [P. Wagner/P. Wagner/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 189279: authorized by Björn Kröger, entered by Björn Kröger on 09.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Endocerida - Proterocameroceratidae
Kirkoceras compressum Ulrich et al. 1943
Kirkoceras gracile Ulrich et al. 1943
Kirkoceras arcuatum Ulrich and Foerste 1936
 Endocerida - Piloceratidae
Utoceras sp. Ulrich et al. 1943