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

• Early vertebrateNarrower topic: Some of the earliest proposed vertebrate fossils come from Cambrian deposits.

• Geologic timeBroader topic: It marks a major biological transition near the beginning of the Phanerozoic Eon.

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

• OpabiniaNarrower topic: Opabinia is among the fossils that document the variety of Cambrian animal body plans.

• 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.

• OnychophoraNarrower topic: Cambrian lobopodians provide deep evolutionary context for the velvet-worm body plan.

• PriapulidaNarrower topic: Priapulid-like fossils occur in Cambrian deposits from this interval of animal diversification.

• History of lifeBroader topic: Its fossil record captures a major expansion of animal forms and ecological complexity.

• 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.

• DickinsoniaCompared with: Dickinsonia predates this diversification and complicates accounts of animal origins.

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

• Historical geologyBroader topic: Fossil succession reveals a major transition in the history of complex animal life.

• History of EarthBroader topic: Its rapid diversification marks a conspicuous change in the record of complex life.

• MacroevolutionBroader topic: It is a landmark case of rapid diversification early in animal history.

• 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.

• Geological history of EarthBroader topic: Fossils from this interval record a striking expansion of animal forms.

• HalkieriidNarrower topic: Halkieriids lived amid the early diversification of complex animal body plans.

• LeanchoiliaNarrower topic: Leanchoilia belongs to the diverse marine ecosystems that emerged during this interval.

• OttoiaNarrower topic: Ottoia belongs to the diverse marine ecosystems preserved from this interval.

• SidneyiaRelated: Sidneyia illustrates the anatomical diversity present during this diversification.

• DinocarididaRelated: Dinocarididans diversified during this major early radiation of animal life.

• Evolution of molluscsNarrower topic: Many recognizable molluscan forms entered the fossil record during this diversification.

• Geologic recordBroader topic: Its fossil evidence marks a dramatic biological transition in the record.

• LeptostracaNarrower topic: Some early arthropods compared with phyllocarids come from this period of diversification.

• LingulataRelated: Lingulate fossils occur among the early shelled animals of this interval.

• Organism formRelated: Its fossil record documents the early diversification of many animal body plans.

• TamisiocarididaeRelated: Tamisiocaridids belong to the early marine ecosystems whose diversity emerged during this interval.

• VetulicoliaRelated: Vetulicolian fossils belong to the early diversification of animal body plans.