Where: Argentina (50.2° S, 68.9° W: paleocoordinates 51.0° S, 62.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Monte Leon Formation, Early/Lower Miocene (23.0 - 16.0 Ma)
• STRATIGRAPHIC RELATIONS: From Monte Leon Fm, which is unconformably overlain by the Santa Cruz Fm (Late Miocene) and unconformably overlies the San Julian Fm (Early Oligocene). AGE: Stated in text to be Oligocene in age. Recent chronostratigraphic revision by Del Rio (2004) places the Monte Leon Fm in the Early Miocene. STRATIGRAPHIC POSITION: Upper levels of the Monte Leon Fm.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; unlithified, shelly/skeletal siliciclastic sediments
Size class: macrofossils
Collection methods: quarrying,
• COLLECTOR: A. M. Oliveras and H. H. Camacho (1988). REPOSITORY: Catedra de Paleontologia de la Universidad de Buenos Aires (CPBA).
Primary reference: A. M. Olivera and H. H. Camacho. 1990. Revision del genero Neoimbricaria Ihering, 1907 (Gastropoda, Neogastropoda) del Oligoceno de la Argentina. Anales de la Academia Nacional de Ciencias Exactas, FĂsicas y Naturales, Buenos Aires 42:225-235 [A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 66154: authorized by Austin Hendy, entered by Austin Hendy on 02.10.2006, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
Aves | |
"Rostrornis floweri n. gen. n. sp." = Brontornis burmeisteri
"Rostrornis floweri n. gen. n. sp." = Brontornis burmeisteri Moreno and Mercerat 1891 waterfowl | |
"Stereornis gaudryi n. sp." = Phorusrhacos longissimus, "Mesembriornis studeri n. sp." = Phorusrhacos longissimus, "Patagornis lemoinei n. sp." = Psilopterus lemoinei
"Stereornis gaudryi n. sp." = Phorusrhacos longissimus Ameghino 1887 terror bird
"Mesembriornis studeri n. sp." = Phorusrhacos longissimus Ameghino 1887 terror bird
"Patagornis lemoinei n. sp." = Psilopterus lemoinei Moreno and Mercerat 1891 terror bird | |
Gastropoda | |
Austroimbricaria gracilior Ihering 1897 mitre shell
Austroimbricaria quemadensis Ihering 1897 mitre shell |