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: Coilopoceras springeri ammonoid zone, 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; lithology not reported
Size class: macrofossils
Preservation: mold/impression
Reposited in the USNM
• collection made by C. J. Hares 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 38970: authorized by Martin Aberhan, entered by Sabine Nürnberg on 18.05.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Coilopoceras springeri Hyatt 1903 ammonite | |
Prionocyclus hyatti Stanton 1894 ammonite | |
Romaniceras (Romaniceras) mexicanum, Romaniceras (Yubariceras) reymenti, Spathites sp., "Spathites (Spathites) puercoensis" = Spathites puercoensis
Romaniceras (Romaniceras) mexicanum Jones 1938 ammonite
Romaniceras (Yubariceras) reymenti Collignon 1967 ammonite
Spathites sp. Kummel and Decker 1954 ammonite
"Spathites (Spathites) puercoensis" = Spathites puercoensis Herrick and Johnson 1900 ammonite |