Linked from

The 17 pages that link to Placoderm, each with the reason it gives.

• SilurianBroader topic: Their early representatives appear in Silurian fossil records.

• ChondrichthyesRelated: Placoderms were other early jawed vertebrates, providing context for chondrichthyan evolution.

• OsteichthyesCompared with: Placoderms were jawed vertebrates outside Osteichthyes, despite having extensive bony armor.

• JawBroader topic: Placoderms preserve some of the earliest evidence of jawed vertebrates.

• OperculumCompared with: Their gill coverings differed from the familiar bony operculum of many modern fishes.

• Dermal boneBroader topic: Their prominent head and trunk plates exemplify dermal bone in early jawed vertebrates.

• OstracodermCompared with: Placoderms combined armor with jaws, unlike ostracoderms.

• Jawless fishCompared with: Placoderms show that early jawed fishes diversified alongside surviving jawless lineages.

• Late DevonianRelated: Placoderms were among the groups heavily affected by the end-Devonian crisis.

• GnathostomataBroader topic: Placoderms represent an early, diverse branch of extinct jawed vertebrates.

• Dermal denticleCompared with: Their bony armor provides a contrasting example of ancient fish skin skeletons.

• AcanthodiiRelated: Placoderms lived alongside acanthodians and represent another major early jawed-fish group.

• DunkleosteusNarrower topic: Dunkleosteus belongs to this diverse group of early jawed vertebrates.

• BothriolepisNarrower topic: Bothriolepis belongs to this group of armored jawed fishes.

• Evolution of fishBroader topic: Placoderms show an early burst of jawed-fish diversity and varied feeding forms.

• HyneriaCompared with: Placoderms such as Dunkleosteus shared Hyneria’s era but had armored head and trunk plates.

• Late Devonian mass extinctionRelated: Placoderms disappeared by the end of the Devonian, amid the period's final faunal turnover.