Where: Arizona (35.7° N, 110.8° W: paleocoordinates 37.1° N, 74.1° W)
• coordinate stated in text
When: Mancos Shale Formation, Late/Upper Cenomanian (99.6 - 93.5 Ma)
• The section has been measured and logged in detail; see Kirkland 1990 and 1991
• bed-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified siliciclastic sediments
Size classes: macrofossils, microfossils
Preservation: mold/impression, replaced with calcite
Reposited in the NMMNH
Collection methods: bulk, quarrying,
Primary reference: J. I. Kirkland. 1996. Paleontology of the Greenhorn cylcothem (Cretaceous: late Cenomanian to middle Turonian) at Black Mesa, northeastern Arizona. New Mexico Museum of Natural History and Science Bulletin 9:1-131 [P. Harries/P. Harries/P. Harries]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 54145: authorized by Peter Harries, entered by Peter Harries on 24.09.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Lucina subundata clam | |
Gastropoda | |
Graphidula sp. Stephenson 1941 true whelk | |
Acteon propinguis snail | |
Cephalopoda | |
Metoicoceras geslinianum d'Orbigny 1841 ammonite
Euomphaloceras septemseriatum Cragin 1893 ammonite |