While they did not explicitly date the asterid clade in that study, its "older" order, the Ericales was assigned a date of 89.
The order of asterids with the best fossil record is the Ericales (Table 2), with 80 reports; however, this apparent abundance of ericalean taxa is misleading since a good portion of these records is based on reports of the genus Symplocos, monographed in 1949 by Kirchheimer.
However, it is noticeable that despite the biodiversity these two groups display today, their fossil record combined is barely larger than the combined fossil record of the two early diverging orders, the Cornales and the Ericales.
Phylogenetic relationships among the core Ericales based on multiple data partitions.
Dicotyledons: Celastrales, Oxalidales, Rosales, Cornales, Ericales.
The usefulness of systematic wood anatomy in Ericales.
We were brought up with some preconceptions about the structure of some larger groups, such as the structure of an asterid, of a member of Dipsacales, or of a member of Ericales.
They are concentrated in the more basal orders, Cornales and Ericales (for phylogeny, cf.
Cladistic interrelationships and major clades of the Ericales.
Studies in the comparative anatomy of the Ericales, II: Ericaceae--Subfamily Arbutoideae.
A few major groups within the order Ericales are strongly supported.
It would be interesting to investigate the possible interactions between aluminum response mechanisms and the mycorrhizal association of plant roots in the Ericales sensu APG (Shaw, 1987).