Claim · model-written summary
Most Poales families were dated to the Cretaceous, more than 65 million years ago.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Verbatim
e0“Most Poales families date back to the Cretaceous >65 million years ago (mya)”
Title
GONDWANAN EVOLUTION OF THE GRASS ALLIANCE OF FAMILIES (POALES)
Kare Bremer Evolution 2002. doi:10.1111/j.0014-3820.2002.tb01451.x
Other claims from this paper (8)
- Observation Poales comprised two well-supported main clades, graminoid and cyperoid.
- Observation Poaceae and Ecdeiocoleaceae were strongly supported sister groups.
- Observation Joinvilleaceae was the sister group of the Poaceae and Ecdeiocoleaceae pair.
- Observation Dispersal-vicariance analysis placed the Poales origin in South America.
- Observation The cyperoid clade was inferred to originate in West Gondwana.
- Observation The graminoid clade was inferred to originate in East Gondwana.
- Mechanism The Trans-Antarctic connection and breakup probably influenced Poales evolution through vicariance.
- Observation African separation was judged too old to explain this vicariance.