Linked from
The 9 pages that link to Deuterostome, each with the reason it gives.
EchinodermNarrower topic: Echinoderms belong to this broader lineage, which also includes chordates.
ChordateNarrower topic: Chordates belong to Deuterostomia, alongside echinoderms and hemichordates.
BilateriaBroader topic: It is the other principal branch in the traditional bilaterian division.
HemichordateNarrower topic: Hemichordates belong to this major branch of bilaterian animals.
ChaetognathaRelated: Molecular studies have associated chaetognaths with deuterostome lineages.