Linked from
The 11 pages that link to Bilateria, each with the reason it gives.
LophotrochozoaNarrower topic: Lophotrochozoans belong to this broad branch of animals.
DeuterostomeNarrower topic: Deuterostomes are one major branch within this broader animal grouping.
ProtostomeNarrower topic: Protostomes form one of Bilateria’s two major branches.
NemerteaNarrower topic: Nemerteans belong to this broad lineage of bilaterally organized animals.