Where: Mexico, Mexico (19.9° N, 99.1° W: paleocoordinates 19.9° N, 99.1° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Becerra Formation, Late/Upper Pleistocene (0.1 - 0.0 Ma)
• Late Pleistocene on the basis of mammals (Hibbard, 1955) and avifauna
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; lithology not reported
Size class: macrofossils
Collected in the 1930s; reposited in the LACM
Primary reference: H. Howard. 1969. Avian fossils from three Pleistocene sites in central Mexico. Los Angeles County Museum Contributions in Science 172:1-11 [J. Alroy/K. Sears/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 192627: authorized by Matthew Clapham, entered by Matthew Clapham on 14.04.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
Aves | |
"Anas ? americana" = Mareca americana, Cygnus sp., "Anas ? collaris" = Aythya collaris, Anas acuta, "Anas ? cyanoptera" = Spatula cyanoptera
"Anas ? americana" = Mareca americana Gmelin 1789 American wigeon
"Anas ? collaris" = Aythya collaris Donovan 1809 ring-necked duck
Anas acuta Linnaeus 1758 northern pintail
"Anas ? cyanoptera" = Spatula cyanoptera Viellot 1816 cinnamon teal | |
| |
Breagyps clarki Miller 1910 New World vulture | |
? Ciconia sp. Brisson 1760 stork | |
"Caracara prelutosa" = Caracara cheriway
| |
Spizaetus ? grinnelli Miller 1911 hawk-eagle
Aquila chrysaetos Linnaeus 1758 golden eagle |