Leafcutter Bee Fossils from La Brea Tar Pits

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Rotating video nest of opaque to transparent nest cell containing female pupa.

Citation: Holden AR, Koch JB, Griswold T, Erwin DM, Hall J (2014) Leafcutter Bee Nests and Pupae from the Rancho La Brea Tar Pits of Southern California: Implications for Understanding the Paleoenvironment of the Late Pleistocene. PLoS ONE 9(4): e94724. doi:10.1371/journal.pone.0094724