USGS Mesozoic locality 14674 (Cretaceous of Mexico)

Where: Chihuahua, Mexico (29.5° N, 105.0° W: paleocoordinates 31.8° N, 73.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Middle Turonian (93.5 - 89.3 Ma)

• Prionocyclus hyatti zone, Coilopoceras springeri subzone; Ojinaga or Boquillas Formation

• group of beds-level stratigraphic resolution

Environment/lithology: marine

Size class: macrofossils

Preservation: mold/impression

Reposited in the USNM

• collection made by H. M. Nielson in 1926

Primary reference: W. J. Kennedy and W. A. Cobban. 1988. Mid-Turonian ammonite faunas from northern Mexico. Geological Magazine 125(6):593-612 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38969: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 18.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Focus on ammonites.
 Ammonitida - Acanthoceratidae
"Spathites (Spathites) puercoensis" = Spathites puercoensis Herrick and Johnson 1900 ammonite
Romaniceras (Yubariceras) reymenti Collignon 1967 ammonite
Romaniceras (Yubariceras) kanei Jones 1938 ammonite