Cerritos Bayos (Caliza de Aspidoceras) (Jurassic of Chile)

Where: Antofagasta, Chile (22.6° S, 69.1° W: paleocoordinates 21.0° S, 34.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Oxfordian (163.5 - 157.3 Ma)

• Caliza de Aspidoceras

• bed-level stratigraphic resolution

Environment/lithology: concretionary limestone

• limestone with concretions

Size classes: macrofossils, mesofossils

Preservation: concretion

Collected by W. A. Biese in 1946–1950

Collection methods: surface (in situ),

Primary reference: W. Biese. 1961. El Jurásico de Cerritos Bayos [The Jurassic of Cerritos Bayos]. Universidad de Chile, Facultad de Ciencias Fisicas y Matematicas, Instituto de Geología, Publicación 19:1-61 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 172175: authorized by Matthew Carrano, entered by Matthew Carrano on 28.07.2015, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

• Invertebrates are listed but are omitted, other than ammonites, because the identifications are entirely incorrect.
 Ammonoidea -
Aptychus sp. von Meyer 1861 ammonite
 Ammonitida - Kosmoceratidae
"Cosmoceras sp." = Kosmoceras
"Cosmoceras sp." = Kosmoceras Waagen 1869 ammonite
 Ammonitida - Perisphinctidae
 Ammonitida - Aspidoceratidae
Aspidoceras sp. Zittel ammonite
 Ammonitida - Macrocephalitidae
 Ammonitida - Oppeliidae
Trimarginites sp. Rollier 1909 ammonite
Gastropoda indet. Cuvier 1795 snail
 Ichthyosauria - Ichthyosauridae
Ichthyosaurus sp. Koenig 1818 ichthyosaur
 Sauropterygia -
Plesiosaurus sp. de la Beche and Conybeare 1821 plesiosaur
 Sauropterygia - Cryptoclididae
Cryptoclididae indet. Williston 1925 plesiosaur
 Lepisosteiformes -
"Lepidotus sp." = Lepidotes
"Lepidotus sp." = Lepidotes Agassiz 1832 gar
 Pachycormiformes - Pachycormidae
Pachycormus sp. Agassiz 1833