KnowraStem groupLinked fromLinked fromThe 12 pages that link to Stem group, each with the reason it gives.All 12Related 8Narrower topic 2Compared with 2Crown groupCompared with: Stem-group taxa sit outside the crown despite their close relationship to its living members.Fossil calibrationCompared with: Stem fossils can establish that a lineage existed before its living members diversified.Early vertebrateRelated: Many proposed early vertebrates may instead be stem vertebrates.Evolution of tetrapodsRelated: Many transitional fossils belong to stem tetrapods rather than the crown group.RadiodontaRelated: This placement distinguishes radiodonts from the last common ancestor and descendants of living arthropods.ReptiliomorphaRelated: Many reptiliomorphs are stem amniotes rather than members of Amniota itself.SeymouriaRelated: Seymouria's placement is understood through its relationship to the amniote crown group.ProganochelysRelated: Whether Proganochelys belongs outside the crown group depends on how its relationships are resolved.CanadaspisRelated: Its uncertain position may place Canadaspis near, but outside, a living arthropod lineage.HalkieriidNarrower topic: Halkieriids may represent a stem lineage near the origin of living molluscs.DinocarididaNarrower topic: Dinocarididans lie on the arthropod stem rather than within the living arthropod crown.TamisiocarididaeRelated: Radiodont placement near arthropods depends on distinguishing stem relatives from crown-group arthropods.