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The 86 pages that link to Cambrian explosion, each with the reason it gives.

• PaleontologyRelated: Researchers investigate how environmental and evolutionary changes produced its fossil record.

• ArthropodRelated: Many major arthropod lineages appear in the fossil record during this interval.

• Geologic time scaleRelated: Its fossil record helps distinguish the Cambrian’s distinctive biological transition.

• ExoskeletonRelated: The fossil record shows widespread mineralized animal skeletons emerging during this interval.

• CrustaceanRelated: The fossil record of early crustacean relatives emerges amid this diversification.

• Burgess ShaleRelated: The deposit offers an unusually detailed record of animals living during this diversification.

• PaleozoicRelated: Its timing distinguishes the Paleozoic’s opening from the preceding Precambrian.

• BiomineralizationRelated: The emergence of widespread mineralized skeletons forms one conspicuous part of this diversification.

• Snowball EarthRelated: It is sometimes linked to earlier Cryogenian environmental changes, though the connection remains indirect.

• AnimalRelated: The event records the early diversification of many animal body plans.

• LagerstätteRelated: Cambrian Lagerstätten reveal soft-bodied animals that substantially expand the known record of this diversification.

• CrustaceaRelated: Cambrian fossils preserve early arthropods relevant to crustacean origins.

• PrecambrianRelated: It followed the Precambrian and made animal fossils far more prominent.

• SpongeRelated: Fossil sponges contribute evidence about early animal ecosystems during this interval.

• EcdysozoaRelated: Ecdysozoan fossils contribute to debates about when major animal body plans diversified.

• TrilobiteRelated: Trilobites appear early in the fossil record during this major expansion of animal diversity.

• Fossil calibrationRelated: Cambrian fossils provide minimum-age constraints for early animal divergences.

• AnnelidRelated: Fossils from this interval document early annelid-like body plans and their diversification.

• Bilateral symmetryRelated: The diversification of bilaterian animals is a major part of this evolutionary episode.

• Supercontinent cycleRelated: Fragmenting Gondwana raised sea levels and mineral nutrients as early animal lineages diversified.

• TagmosisRelated: Cambrian fossils document early arthropod diversity and varied arrangements of body regions.

• PancrustaceaRelated: Early arthropod fossils from this interval provide context for pancrustacean origins.

• Animal phylogenyRelated: Its fossils bear on the timing and early branching of animal lineages.

• AnomalocarisRelated: Anomalocaris became an emblem of the larger, more complex animals appearing in Cambrian seas.

• BilateriaRelated: Many bilaterian groups become conspicuous in the fossil record during this diversification.

• MyriapodaRelated: The deeper arthropod history relevant to myriapod origins begins in this early diversification.

• PikaiaRelated: Pikaia belongs to the early animal diversity documented in Cambrian deposits.

• Charles Doolittle WalcottRelated: Walcott’s fossils became central evidence in debates about early animal diversification.

• HaikouichthysRelated: Haikouichthys contributes to evidence for early diversity among chordate body plans.

• Oxygenation of Earth's atmosphereRelated: Oxygen availability is one proposed environmental influence on early animal diversification.

• ProterozoicRelated: This early Phanerozoic radiation followed ecological and evolutionary developments in the Proterozoic.

• Vertebrate evolutionRelated: Cambrian fossils record early diversification among animals near vertebrate origins.

• Young Earth creationismRelated: Creationist accounts interpret this fossil pattern differently from evolutionary geology.

• Arthropod appendagesRelated: Cambrian fossils preserve early arthropods and the beginnings of appendage diversity.

• Chengjiang biotaRelated: Chengjiang preserves diverse animal communities from this evolutionary interval.

• DeuterostomeRelated: Early fossils from this interval provide evidence about the emergence of major deuterostome lineages.

• PanarthropodaRelated: Cambrian fossils document early forms relevant to panarthropod origins and diversification.

• NeoproterozoicRelated: It followed the Neoproterozoic and marks a major biological transition.

• HallucigeniaRelated: Hallucigenia lived during this diversification, when many distinctive animal body plans appeared.

• HolozoaRelated: It marks a later phase of animal history, long after holozoan lineages diverged.

• KimberellaRelated: Kimberella predates this diversification and may illuminate animal evolution before it.

• MonoplacophoraRelated: Cambrian fossils include early molluscs relevant to hypotheses about the class's deep history.

• RadiodontaRelated: Radiodont diversity and anatomy contribute to debates about the pace of early animal evolution.

• HemichordateRelated: Early fossils assigned to hemichordate relatives occur in Cambrian seas.

• WiwaxiaRelated: Wiwaxia belongs to the diverse marine ecosystems that emerged during this radiation.

• Head (anatomy)Related: Early fossils from this interval document major changes in animal body plans and sensory structures.

• PlacozoaRelated: Debates about placozoan ancestry connect to questions about when animal body plans diversified.

• XiphosuraRelated: Cambrian arthropod fossils provide context for debates about the origins of chelicerates.

• CanadaspisRelated: Canadaspis contributes evidence about the variety of arthropod forms in this diversification.

• ChaetognathaRelated: Fossils attributed to early arrow worms bear on the phylum’s deep history.