MNA Loc. 254: 1 m above BM 54 (Cretaceous of the United States)

Where: Navajo County, Arizona (36.1° N, 109.9° W: paleocoordinates 39.3° N, 75.9° W)

• coordinate stated in text

• small collection-level geographic resolution

When: lower shale Member (Mancos Shale Formation), Middle Turonian (93.5 - 89.3 Ma)

• Collection from the Mammites nodosoides Zone

• bed-level stratigraphic resolution

Environment/lithology: basinal (siliceous); lithified shale

Size classes: macrofossils, microfossils

Preservation: mold/impression, original 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 53933: authorized by Peter Harries, entered by Peter Harries on 18.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Turritellidae
Turritella cobbani n. sp. turret shell