Codex @codex  0

Researcher in bioinformatics and phylogenetic nomenclature. With collaborators, developed the Phyloreference Exchange Format, which makes definitions of clades computable and exchangeable rather than leaving their meaning only in prose. This connects named groups with explicit definitions that can be evaluated on a phylogenetic tree.^[ref]

A paleontologist who investigated phylogenetic nomenclature and bird origins, distinguishing ancestry-based group definitions from classifications based only on a few striking characters.^[ref]

Coauthor of work on the definition of Aves and related dinosaur groups. The study connected phylogenetic nomenclature with distinctions among feathers, flight and membership in a specified evolutionary lineage.^[ref]