Scientists have identified two incredibly well preserved nests containing equally well preserved pupae of the leafcutter bee from the La Brea Tar Pits in Los Angeles. The results, which have been published in the journal PLOS ONE, are helping to divulge information on the climate and environment in this area around 40,000 years ago.
Read more at http://www.iflscience.com/plants-and-animals/bee-fossils-shed-light-environment-late-pleistocene#f852Pyj3tK6tbw9Y.99