Where: Río Negro, Argentina (42.1° S, 66.3° W: paleocoordinates 45.0° S, 52.3° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Los Alamitos Formation, Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)
• lower section of formation includes two layers with fossils, about 7 meters apart, in lower third of section
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine - large; yellow siltstone
Size classes: macrofossils, mesofossils
Preservation: trace
Collected by J. F. Bonaparte, J. E. Powell in 1982; reposited in the MACN
Collection methods: quarrying, surface (float), surface (in situ), mechanical,
Primary reference: R. R. Andreis. 1987. The Late Cretaceous fauna of Los Alamitos, Patagonia, Argentina part I—stratigraphy and paleontology. Revista del Museo Argentina de Ciencias Naturales "Bernardino Rivadavia" e Instituto Nacional de Investigacion de las Ciencias Naturales: Paleontología 3(3):103-110 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 45088: authorized by Matthew Carrano, entered by Matthew Carrano on 04.10.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Kritosaurus australis" = Huallasaurus australis
"Kritosaurus australis" = Huallasaurus australis Bonaparte et al. 1984 hadrosaurine |