TY - JOUR AU - Field, Daniel J. AU - Hsiang, Allison Y. PY - 2018 DA - 2018/06/25 TI - A North American stem turaco, and the complex biogeographic history of modern birds JO - BMC Evolutionary Biology SP - 102 VL - 18 IS - 1 AB - Earth’s lower latitudes boast the majority of extant avian species-level and higher-order diversity, with many deeply diverging clades restricted to vestiges of Gondwana. However, palaeontological analyses reveal that many avian crown clades with restricted extant distributions had stem group relatives in very different parts of the world. SN - 1471-2148 UR - https://doi.org/10.1186/s12862-018-1212-3 DO - 10.1186/s12862-018-1212-3 ID - Field2018 ER -