MNA Loc 296: BM 4 (Cretaceous of the United States)

Where: Arizona (36.3° N, 109.8° W: paleocoordinates 37.4° N, 72.9° W)

• coordinate stated in text

When: lower shale Member (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, argillaceous shale

Size classes: macrofossils, microfossils

Preservation: mold/impression

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 54164: authorized by Peter Harries, entered by Peter Harries on 26.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Hamitidae
Puebloites greenhornensis Cobban and Scott 1973 ammonite
 Ammonitida - Vascoceratidae
 Ammonitida - Acanthoceratidae
Eucalycoceras pentagonum Jukes-Browne 1896 ammonite
"Calycoceras naviculare" = Calycoceras (Calycoceras) naviculare Mantell 1822 ammonite
Neocardioceras minutum Cobban 1988 ammonite
 Ammonitida - Desmoceratidae
"Desmoceras scotti" = Moremanoceras scotti
"Desmoceras scotti" = Moremanoceras scotti Moreman 1942 ammonite
 Ammonitida - Placenticeratidae
Placenticeras cumminsi Cragin 1893 ammonite