Claim · model-written summary
The genus traversed Beringia and became widespread in the Paleocene in Asia and North America.
Verbatim
t0“phytogeographic history of Porosia Hickey”
e4“the genus traversed Beringia and became widespread in the Paleocene both in Asia (Kazakhstan, Amur Region, and Koryak Highlands), and North America (Montana, North Dakota, Wyoming, Colorado, Oregon, Washington, Alberta, Saskatchewan)”
Title
Steven R. Manchester; Tatyana M. Kodrul Acta Palaeobotanica 2014. doi:10.2478/acpa-2014-0002
Other claims from this paper (5)
- Observation Porosia verrucosa fruits have regularly spaced cylindrical intrusions over the endocarp surface.
- Observation The endocarp intrusions are interpreted as oil cavities similar to those of extant Rutaceae fruits.
- Observation The oldest known occurrences of P. verrucosa are Late Cretaceous (Campanian to Maastrichtian) in western North America.
- Observation The genus extended to the late Paleocene in the Rocky Mountain and Great Plains region.
- Observation The genus appears to have become extinct near the Paleocene-Eocene boundary.