TY - RPRT TI - Fleas (Siphonaptera) are Cretaceous, and Evolved with Theria AU - Qiyun Zhu AU - Michael W Hastriter AU - Michael F Whiting AU - Katharina Dittmar PY - 2015 DO - 10.1101/014308 UR - https://www.biorxiv.org/content/10.1101/014308v1 ID - 10.1101/014308 ER -