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Hueso Blanco (Miocene of Peru)

Where: Peru (15.5° S, 74.8° W: paleocoordinates 15.9° S, 72.7° W)

• coordinate stated in text

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 7.57.0 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

• The sediment package exposed at Hueso Blanco (bed LM 10 in Brand et al., 2011) is about 15 m thick and consists mainly of sparsely to moderately bioturbated, well-sorted, fine- to medium- grained sandstones (Electronic supplementary material; Fig. S1).

Size class: macrofossils

Preservation: trace

Primary reference: A. Collareta, O. Lambert, W. Landini, C. Di Celma, E. Malinverno, R. 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] 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)