Wu, R.; Álvarez-Carretero, S.; Tong, Y.; Wan, S.; Schneider, H.; Clark, J.; Pisani, D.; Silvestro, D.; et al.
range · topology · geochronology · taxonomy · biogeography
Open-access version of record; model estimates are reported separately for three calibration strategies.
A 2026 analysis used 25,685 non-pollen fossil occurrences to construct 110 calibration densities for a 644-species molecular tree; its preferred hard-bound strategy estimated crown Angiospermae at 152.99–151.46 Ma, while less constrained strategies yielded far older intervals, so the result is a calibration-dependent model rather than a fossil first appearance.
claim:event:crown-angiosperm-calibration-sensitivityAngiospermae is treated as the flowering-plant clade; fossil placements and calibration densities remain analytical inputs rather than direct ancestor assignments.
claim:taxon:angiospermae:taxonomyThe calibration dataset and living sample are geographically broad but do not identify one centre of origin or complete Jurassic–Cretaceous distribution.
claim:taxon:angiospermae:biogeographyThe 135–0 Ma atlas range is a rounded navigation envelope; latest-Jurassic crown estimates are calibration-dependent models, not direct fossil FADs.
claim:taxon:angiospermae:fossil-range