Where: Navajo County, Arizona (36.2° N, 109.8° W: paleocoordinates 37.3° N, 73.0° W)
• coordinate stated in text
When: lower shale Member (Mancos Shale Formation), Late/Upper Cenomanian (99.6 - 93.5 Ma)
• Stratigraphic details in Kirkland 1990 and 1991
• bed-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified shale and lithified, concretionary carbonate
Size classes: macrofossils, microfossils
Preservation: mold/impression, recrystallized, 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: taxonomic analysis
PaleoDB collection 55435: authorized by Peter Harries, entered by Peter Harries on 23.10.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Gervillia navajovus n. sp.
Gervillia navajovus n. sp. oyster | |
Gryphaeostrea elderi n. sp.
Gryphaeostrea elderi n. sp. oyster | |
Inoceramus flavus clam | |
Cephalopoda | |
Metoicoceras geslinianum d'Orbigny 1841 ammonite |