A fossil-informed synthesis relates extant conifer phylogeny to a much richer extinct record; it supports a sampled evolutionary framework but not a precise origin or uninterrupted global range for Coniferophyta.
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References / paperAn overview of extant conifer evolution from the perspective of the fossil record
Leslie, A.B.; Beaulieu, J.; Holman, G.; et al.
Year2018
Source rolesystematic-review
DOI / ID10.1002/ajb2.1143
Fitness and scope
taxonomy · topology · range
Fossil-informed synthesis of extant conifer diversification; fossil gaps and extinct lineages prevent a literal whole-group origin date.
Claim ledger
Coniferophyta is displayed at 300–0 Ma only as a conservative review-bounded fossil-to-living navigation range: the source says the conifer record spans more than 300 million years, not that 300 Ma is an exact origin or specimen-level FAD.
claim:taxon:coniferophyta:range-boundary-rc50