Where: Peru (15.5° S, 74.8° W: paleocoordinates 15.9° S, 72.7° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Pisco Formation, Tortonian (11.6 - 7.2 Ma)
• Brand et al. (2011) argued that the sediment package exposed at Hueso Blanco (featuring the LM 10 marker bed) is roughly correlative with the El Jahuay (ELJ) vertebrate level of de Muizon and DeVries (1985) and de Muizon (1988). In turn, Lambert and de Muizon (2013) reattributed the LM 10 marker bed to the Aguada de Lomas (AGL) vertebrate level, based on faunal and sedimentary similarities (de Muizon and DeVries, 1985; de Muizon, 1988). Based on K/Ar dating of underlying tuff layers, the AGL vertebrate level is considered younger than 7.93 Ma (about 7.5–7.0 Ma) (de Muizon and DeVries, 1985; de Muizon and Bellon, 1986; Lambert and de Muizon, 2013). Finally, 87Sr/86Sr analyses on marine mollusc shells bracketed the age of the AGL level between 7.46 Ma and 7.30 Ma (Ehret et al., 2012).
• bed-level stratigraphic resolution
Environment/lithology: marine; fine-grained sandstone
Size class: macrofossils
Preservation: trace
Primary reference: A. Collareta, O. Lambert, W. Landini, C. Di Celma, E. Malinverno, R. M. Varas-Malca, M. Urbina and G. Bianucci. 2017. Did the giant extinct shark Carcharocles megalodon target small prey? Bite marks on marine mammal remains from the late Miocene of Peru. Palaeogeography, Palaeoclimatology, Palaeoecology 469:84-91 [M. Uhen/M. Uhen/O. Alfaro]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 183918: authorized by Mark Uhen, entered by Mark Uhen on 18.01.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Mammalia | |
cf. Lomacetus sp. Muizon 1986 porpoise | |
Piscobalaena nana Pilleri and Siber 1989 whale | |
Piscophoca sp. Muizon 1981 seal
Acrophoca longirostris Muizon 1981 seal | |
Thalassocnus sp. Muizon and McDonald 1995 edentate | |
Reptilia | |
Piscogavialis jugaliperforatus Kraus 1998 crocodilian | |
Aves | |
Spheniscus sp. Brisson 1760 penguin | |
Sula magna Stucchi 2003 booby | |
Actinopteri | |
Sardinops sp. Hubbs 1929 herring |