Multiple lineages of lice pass through the K-Pg boundary.

@article{Smith2011MultipleLO,
  title={Multiple lineages of lice pass through the K-Pg boundary.},
  author={Vincent S. Smith and Tom Pitt Ford and Kevin P. Johnson and Paul C. D. Johnson and Kazunori Yoshizawa and Jessica E Light},
  journal={Biology letters},
  year={2011},
  volume={7 5},
  pages={
          782-5
        }
}
For modern lineages of birds and mammals, few fossils have been found that predate the Cretaceous-Palaeogene (K-Pg) boundary. However, molecular studies using fossil calibrations have shown that many of these lineages existed at that time. Both birds and mammals are parasitized by obligate ectoparasitic lice (Insecta: Phthiraptera), which have shared a long coevolutionary history with their hosts. Evaluating whether many lineages of lice passed through the K-Pg boundary would provide insight… CONTINUE READING

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