"One key questions for evolutionary developmental biology (EvoDevo) is to reconstruct the genetic tool-kit present in Urbilateria, the last common ancestor of invertebrates and vertebrates...In the medium-term it will be important to have at least one complete genome from each animal phylum, and in the long-term to reconstruct the archetypal genome of Urbilateria."

— Edward De Robertis (2008)

Genome resources

The Hofstenia genome (Gehrke et al., 2019):

The Notospermus genome (Luo et al, 2018):

The Phoronis genome (Luo et al, 2018):

The Lingula genome (Luo et al., 2015):