Linked from

The 19 pages that link to Ammonite, each with the reason it gives.

• Cretaceous–Paleogene extinction eventBroader topic: Their extinction shows the event’s reach across marine ecosystems.

• Chicxulub craterRelated: Ammonites vanished at the K–Pg boundary alongside many other marine groups.

• K–Pg boundaryRelated: Their fossil record ends at the boundary, documenting the loss of a successful marine group.

• Late JurassicRelated: Ammonites provide abundant fossils for dating Late Jurassic marine strata.

• PyriteRelated: Pyrite can replace or coat ammonite shells during fossilization.

• Index fossilBroader topic: Rapidly evolving ammonite groups provide classic index fossils for Mesozoic rocks.

• PlesiosaurRelated: Ammonites were among the marine animals available as prey in plesiosaur habitats.

• Early JurassicRelated: Their rapidly changing forms help date and correlate rocks from the epoch.

• Mesozoic Marine RevolutionBroader topic: Their shell forms and repaired injuries provide evidence of life under predation.

• Chicxulub impactorRelated: Ammonites vanished at the K–Pg extinction, alongside many other marine groups.

• Cretaceous–Paleogene boundaryRelated: Their extinction shows how strongly the crisis affected marine ecosystems.

• Chicxulub impactRelated: Ammonites disappeared at the boundary, marking severe losses in marine ecosystems.

• NautilusCompared with: Ammonites resemble nautiluses in outline but belong to a separate extinct cephalopod group.

• AmmonoideaCompared with: The familiar name is often used loosely for the entire subclass.

• Alvarez hypothesisBroader topic: Their extinction shows the crisis extended beyond terrestrial dinosaurs.

• AmmanRelated: Their capital, Rabbath Ammon, occupied the site of modern Amman.

• Mollusc shellBroader topic: Ammonites exemplify the elaborate chambered shells found in extinct molluscan groups.

• Evolution of molluscsBroader topic: Their diverse shells document a major radiation and eventual extinction of cephalopods.

• Triassic–Jurassic extinctionRelated: Ammonites suffered substantial losses but diversified during the Jurassic recovery.