Angiospermae is treated as the flowering-plant clade; fossil placements and calibration densities remain analytical inputs rather than direct ancestor assignments.
claim:taxon:angiospermae:taxonomyAngiospermae
Fossil-calibrated clocks and Early Cretaceous body fossils are kept separate: modelled crown ages do not become direct fossil first appearances or ecological dominance.
Represented range135–Present Ma
Content packageangiospermae
PBDBtxn:54885
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
The calibration dataset and living sample are geographically broad but do not identify one centre of origin or complete Jurassic–Cretaceous distribution.
claim:taxon:angiospermae:biogeographyMontsechia supports submerged freshwater ecology for that fossil only; the profile does not project aquatic habit onto the angiosperm ancestor.
claim:taxon:angiospermae:ecologyFlowers, enclosed ovules and fruits diagnose angiosperm context, while the profiled Montsechia material preserves leafy axes and closed single-seeded fruits.
claim:taxon:angiospermae:morphologyThe 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-rangeKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- Integrated analysis of fossils and molecular divergence time estimates a latest Jurassic origin of angiospermsWu, R.; Álvarez-Carretero, S.; Tong, Y.; Wan, S.; Schneider, H.; Clark, J.; Pisani, D.; Silvestro, D.; et al. · 2026 · DOI 10.1038/s41477-026-02311-x
- Open Tree of Life web servicesOpenTreeOfLife Project
- The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39
- Montsechia, an ancient aquatic angiospermGomez, B.; Daviero-Gomez, V.; Coiffard, C.; Martín-Closas, C.; Dilcher, D.L. · 2015 · DOI 10.1073/pnas.1509241112
- Denormalized occurrence and taxon tables of the Paleobiology DatabaseThe Paleobiology Database Community; Kocsis, Á.T. · 2026 · DOI 10.5281/zenodo.21620933
- A metacalibrated time-tree documents the early rise of flowering plant phylogenetic diversityMagallón, S.; Gómez-Acevedo, S.; Sánchez-Reyes, L.L.; Hernández-Hernández, T. · 2015 · DOI 10.1111/nph.13264