Claim · model-written summary
Morphological and anatomical data differ significantly from ndhF sequences in phylogenetic structure.
- Taxon
- RapateaceaeRapateaceaet0
- Material
- morphological/anatomical datae2
- Outcome
- phylogenetic structuree2
- Direction
- differ significantlye2
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Verbatim
t0“FAMILY RAPATEACEAE”
e2“Overall, the morphological/anatomical data differ significantly from ndhF sequences in phylogenetic structure, but show a high degree of concordance with the molecular tree in three of four tribes”
Title
T. J. Givnish; T. M. Evans; M. L. Zjhra; et al. Evolution 2000. doi:10.1554/0014-3820(2000)054[1915:mearag]2.0.co;2
Other claims from this paper (11)
- Observation The lowland subfamily Rapateoideae is paraphyletic and includes the montane subfamily Saxofridericioideae as a monophyletic subset.
- Observation Morphological and anatomical data show a high degree of concordance with the molecular tree in three of four tribes.
- Observation Branch lengths are consistent with the operation of a molecular clock.
- Mechanism Maschalocephalus diverges only slightly from other Monotremae, as a product of relatively recent, long-distance dispersal rather than continental drift.
- Observation The family appears to have originated approximately 65 Mya in inundated lowlands of the Guayana Shield.
- Observation Lowland taxa spread widely along riverine corridors.
- Observation Colonization of Amazonian white-sand savannas occurred in the western Shield.
- Observation Invasion of tepui habitats involved frequent speciation and origin of hummingbird pollination in the western Shield.
- Observation Reinvasion of lowland white-sand savannas occurred in the family.
- Observation Speciation in the Stegolepis alliance apparently occurred about 6–12 Mya, long after the tepuis began to be dissected.
- Mechanism Infrequent long-distance dispersal combined with vicariance accounts for speciation atop tepuis in the Stegolepis alliance.