MNA Loc. 814: BM 11 (Cretaceous of the United States)

Where: Coconino County, Arizona (36.1° N, 111.1° W: paleocoordinates 37.5° N, 74.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: lower shale Member (Mancos Shale Formation), Late/Upper Cenomanian (99.6 - 93.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified shale and lithified, concretionary limestone

Size classes: macrofossils, microfossils

Preservation: mold/impression, recrystallized, replaced with calcite

Reposited in the NMMNH

Collection methods: bulk, surface (in situ),

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 55890: authorized by Peter Harries, entered by Peter Harries on 08.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Pteriidae
Phelopteria "B" Stephenson 1953 pearl oyster
 Myalinida - Inoceramidae
Gastropoda
 Heterostropha - Ringiculidae
Cephalopoda
 Ammonitida - Acanthoceratidae
Burroceras transitorium Cobban et al. 1989 ammonite
Burroceras clydense Cobban et al. 1989 ammonite
? Neocardioceras sp. Spath 1926 ammonite
Nigericeras cf. ogojaense Reyment 1955 ammonite
 Ammonitida - Pseudotissotiidae
Thomasites cf. gongilensis Woods 1911 ammonite
 Ammonitida - Vascoceratidae