Cenograms were introduced in 1964 by J.A. Valverde.
Notes on verification
Confirmed by multiple independent academic sources citing Valverde's 1964 publication in La Terre et la Vie as the origin of the cenogram method. [tier=gold indep_score=0.983 clusters=3 claim_tier=notable]
Sources
- Cenogram (wikipedia)
- https://www.sciencedirect.com/science/article/abs/pii/S0031018208006299 (corroboration)
- https://link.springer.com/article/10.1007/s41513-020-00131-2 (corroboration)
- https://www.researchgate.net/publication/234056497_Les_communautes_de_mammiferes_d'Europe_occidentale_de_l'Eocene_superieur_et_Oligocene_structures_et_milieux (corroboration)
- https://sciencedirect.com/science/article/abs/pii/S0016699507000794 (corroboration)