J68. Hill 0.4 miles southeast from mouth of Indidura Cañón, Sierra de Santa Ana (Cretaceous of Mexico)

Where: Mexico (21.9° N, 102.2° W: paleocoordinates 21.8° N, 69.8° W)

When: Prionocyclus hyatti ammonoid zone, 2 & 3 Member (Indidura Formation), Cenomanian (100.5 - 93.9 Ma)

• Kennedy & Cobban (1988) note that it's the Prionocyclus hyatti zone.

• member-level stratigraphic resolution

Environment/lithology: marine; gray, red, argillaceous limestone and shale

• Interbedded, rubbly, gray, pink, and red argillaceous limestone, platy limestone, and calcareous shale; Imperfectly stratified, buff shales containing numerous veinlets of selenite.

Size class: macrofossils

Primary reference: T. S. Jones. 1938. Geology of Sierra de la Peña and paleontology of the Indidura formation Coahuila, Mexico. Geological Society America Bulletin 49(1):69-150 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 230856: authorized by Pete Wagner, entered by Pete Wagner on 22.07.2023

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Turrilitidae
Turrilites "sp. A Jones", Turrilites "sp. B Jones"
Turrilites "sp. A Jones" Lamarck 1801 ammonite
Turrilites "sp. B Jones" Lamarck 1801 ammonite
 Ammonitida - Coilopoceratidae
Coilopoceras "sp. B Jones", Coilopoceras "sp. C Jones", Coilopoceras "sp. jndet."
Coilopoceras "sp. B Jones" Hyatt 1903 ammonite
Coilopoceras "sp. C Jones" Hyatt 1903 ammonite
Coilopoceras "sp. jndet." Hyatt 1903 ammonite
 Ammonitida - Collignoniceratidae
"Prionotropis sp." = Collignoniceras
"Prionotropis sp." = Collignoniceras Breistroffer 1947 ammonite
 Ammonitida - Acanthoceratidae
"Acanthoceras barcusi n. sp." = Eucalycoceras barcusi, ? Romaniceras coahuilaense, Romaniceras "sp. indet", "Romaniceras mexicanum" = Romaniceras (Romaniceras) mexicanum, "Romaniceras adkinsi" = Romaniceras (Romaniceras) mexicanum, "Romaniceras indiduraense" = Romaniceras (Romaniceras) mexicanum, "Romaniceras toribioense" = Romaniceras (Romaniceras) mexicanum, "Romaniceras santaanaense" = Romaniceras (Romaniceras) mexicanum
"Acanthoceras barcusi n. sp." = Eucalycoceras barcusi Jones 1938 ammonite
Romaniceras "sp. indet" Spath 1923 ammonite
"Romaniceras mexicanum" = Romaniceras (Romaniceras) mexicanum Jones 1938 ammonite
"Romaniceras adkinsi" = Romaniceras (Romaniceras) mexicanum Jones 1938 ammonite
"Romaniceras indiduraense" = Romaniceras (Romaniceras) mexicanum Jones 1938 ammonite
"Romaniceras toribioense" = Romaniceras (Romaniceras) mexicanum Jones 1938 ammonite
"Romaniceras santaanaense" = Romaniceras (Romaniceras) mexicanum Jones 1938 ammonite