Cerro Bonaparte (egg level 3) (Cretaceous to of Argentina)

Also known as Co. Bonaparte

Where: Río Negro, Argentina (40.1° S, 66.8° W: paleocoordinates 42.9° S, 52.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Middle Member (Allen Formation), Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• "Egg level 3"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone and mudstone

• "Interpreted as reflecting brackish lagoonal and supratidal environments, associated with aeolian sands (dunes) and deposits of ephemeral rivers"
• Unit 1: "A thick succession of sandstones and mudstones, with intercalations of carbonate and evaporitic rocks" "fine-grained sandy deposits with subordinate muddy layers and two thin evaporitic levels" and Unit 2: "a thick succession of siltstone and mudstone deposits with thin intercalations of ostracod-rich limestones and sandy levels"

Size class: macrofossils

• T1 Faveoloolithidae indet. clutch and eggshells

Preservation: replaced with calcite

Collected in October-December 2003

• Eggshells cleaned using ultrasound

Primary reference: L. Salgado, R. A. Coria, C. M. Magalhaes Ribeiro, A. Garrido, R. Rogers, M. E. Simon, A. B. Arcucci, K. Curry Rogers, A. Paulina Carabajal, S. Apesteguia, M. Fernandez, R. A. Garcia, and M. Talevi. 2007. Upper Cretaceous dinosaur nesting sites of Rio Negro (Salitral Ojo de Agua and Salinas de Trapalco-Salitral de Santa Rosa), northern Patagonia, Argentina. Cretaceous Research 28(3):392-404 [M. Carrano/M. Carrano/F. Aspromonte]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96102: authorized by Matthew Carrano, entered by Matthew Carrano on 17.05.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• Saltasaurine indet. and Cf. Dromaeosauridae indet. remains also present
Show authors, comments, and common names
Reptilia
 Saurischia - Faveoloolithidae
Faveoloolithidae indet.
Faveoloolithidae indet. Zhao and Ding 1976 sauropod
eggshells and clutch