Meanwhile, no obvious basal group for Hydnum could be identified.
"If that is true, then this is the basal group to all other ants," Dr. Fisher said.
Similar to the result inferred from ITS dataset I, no obvious basal group could be detected.
My systematic work features the Patellogastropoda, a basal group of gastropod molluscs that figure prominently in ecological studies of rocky shores around the world.
Overall, the tree of DUF26-containing proteins split into two distinct groups, basal group α and variable group β (Fig. 2a, b), where α is paraphyletic with respect to β.
We expanded our analysis to the most basal group of living jawed fish, Chondrichthyes, which include two subclasses, holocephalans such as the ratfish studied here and elasmobranchs (sharks and batoids).
By contrast, Moyle (2005) used nuclear and mitochondrial sequence data to place Trogon in a clade with the Old World Harpactes and Apaloderma, with Priotelus being sister to this clade and Euptilotus and Pharomachrus forming the basal group.
basal group -- The earliest diverging group within a clade; for instance, to hypothesize that sponges are basal animals is to suggest that the lineage(s) leading to sponges diverged from the lineage that gave rise to all other animals.
Classifications based on molecular analyses now separate Caesalpinioideae into several lineages and recognize the tribe Cercideae as a separate and more basal group in the family.
The most basal group is Echinosteliida.
The following cladogram is modified from Ruta et al. (2007): The most basal group of temnospondyls is the superfamily Edopoidea.
