We evaluated the temporal patterns of diversification using all diversification models implemented in our approach applied on a random sample of 100 trees from the molecular clock analysis.
The likelihood-based method used in this study compares several diversification models with a constant diversification rate (RC-models) with variable diversification rate models (RV-models) [ 42].
Results of fitting diversification models to the completed data sets for the sigmodontine radiation in Laser and TreePar.
The important niche overlap together with the limited gene flow supports a diversification model of niche conservatism in allopatry for the early divergence of the Western lineage and the common ancestor of the Central and the edwardsianus lineage.
In our diversification model [ 13], the RNP1 motif could be involved at an early stage of the anti-spliceosomal autoimmune response.
Our dataset includes 27 to 100% of the extant species in each of the hornwort genera (all of which have more than one species); sparse species sampling is a problem for all diversification modelling, and is also a problem in the present study.
This division stands in marked contrast to the heterogeneity expected from the clonal diversification model.
This increase in diversification rates is supported by the gamma test, which rejects a constant-rate diversification model (5.730, p > 0.999).
Finally, our results suggest that palms conform to a constant diversification model (the 'museum' model or Yule process), at least until the Neogene, with no evidence for any change in diversification rates even through the Cretaceous/Paleogene mass extinction event.
