Pythons in the Eocene of Europe reveal a much older divergence of the group in sympatry with boas
Cite this dataset
Zaher, Hussam; Smith, Krister (2020). Pythons in the Eocene of Europe reveal a much older divergence of the group in sympatry with boas [Dataset]. Dryad. https://doi.org/10.5061/dryad.8pk0p2nkx
Abstract
Extant large constrictors, pythons and boas, have a wholly allopatric distribution that has been interpreted largely in terms of vicariance in Gondwana. Here we describe a stem pythonid based on complete skeletons from the early-middle Eocene of Messel, Germany. The new species is close in age to the divergence of Pythonidae from North American Loxocemus and corroborates a Laurasian origin and dispersal of pythons. Remarkably, it existed in sympatry with the stem boid Eoconstrictor. These occurrences demonstrate that neither dispersal limitation nor strong competitive interactions were decisive in structuring biogeographic patterns early in the history of large, hyper-macrostomatan constrictors and exemplify the synergy between phylogenomic and paleontological approaches in reconstructing past distributions.
Funding
São Paulo Research Foundation, Award: 2018/11902-9
Senckenberg Gesellschaft für Naturforschung
Senckenberg Gesellschaft für Naturforschung