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The 13 pages that link to Lamprey, each with the reason it gives.

• Ray-finned fishCompared with: Lampreys show that vertebrates need not have the paired fins characteristic of most ray-finned fishes.

• TeleostCompared with: Their jawless feeding apparatus differs sharply from teleost jaw structure.

• HagfishRelated: Lampreys are hagfish’s closest living relatives among jawless vertebrates.

• Jawless fishBroader topic: Lampreys are one of the two surviving jawless fish groups and include parasitic species.

• Pharyngeal jawCompared with: Lampreys illustrate feeding without the paired pharyngeal-jaw apparatus found in many fishes.

• AgnathaBroader topic: Lampreys are living agnathans with a distinctive toothed oral disc.

• AnguilliformesCompared with: Their eel-like bodies can invite confusion, but lampreys are not ray-finned fishes.

• Pharyngeal slitBroader topic: Its slits persist as openings associated with gill pouches.

• LanceletCompared with: Lampreys retain a notochord but also possess vertebrate structures absent in lancelets.

• Evolution of fishBroader topic: Lampreys offer a living comparison for studying the evolution of vertebrate jaws and feeding.

• AnaspidaCompared with: Their living anatomy offers a comparison, though it does not establish anaspid behavior.

• CyclostomiBroader topic: Lampreys are the other living lineage included in Cyclostomi.

• Pouched lampreyNarrower topic: The pouched lamprey is one species within this ancient jawless-fish group.