An overview of the current state of the [Datelife](http://datelife.org/) project.
Getting chronograms and geographic distribution maps for species in iNaturalist projects.
In this paper we present datelife, a service implemented via an R package and a web site (http://www.datelife.org/) for efficient reuse, summary and reanalysis of published data on lineage divergence times.
Agave sensu lato appeared around 8 Mya. The best supported diversification model for Agavoidae shows two shifts around 8 Mya. Agave sensu lato speciation rate has been increasing towards the present. Nectarivorous bats from the Glossophaginae subfamily originated around 7 Mya. Agave and their pollinating bats share a diffuse coevolutionary history.
As angiosperms became one of the megadiverse groups of macroscopic eukaryotes, they forged modern ecosystems and promoted the evolution of extant terrestrial biota. Unequal distribution of species among lineages suggests that diversification, the process that ultimately determines species richness, acted differentially through angiosperm evolution.
Fouqueriaceae, the family of ocotillo and bojum tree, is a monogeneric clade with 11 species. Its siter group, the plox family, Polemoniaceae, has a diversity of 400 species. In this paper, we investigate the processes that have determined the species diversity of Fouquieriaceae.
Flowering plant evolution is key for the establishment of modern terrestrial life. Yet, the time of origin of this group of organisms remains unresolved. In this paper, a large flowering plant fossil data base is compiled and 137 fossils are used to calibrate a phylogenetic tree showing relationships and time of origin of 87% of flowering plant families.