Tertiary-radiation
Guides
Panscopus
broad-nosed weevils
Panscopus is a genus of broad-nosed weevils in the family Curculionidae, containing more than 30 described species distributed across North America. Phylogenetic studies indicate that sister species and ancestral lineages exhibit disjunct geographic distributions that correlate with geological and paleoecological events. Divergence events are estimated to have occurred between the late Eocene and Miocene, suggesting the genus originated by or before the Eocene with most cladogenesis in the middle to late Tertiary.