Home›Sources›World's Oldest and Largest Species in Decline, IUCN Red List (IUCN)SourcesWorld's Oldest and Largest Species in Decline, IUCN Red List (IUCN)Conservation Organization Feature ArticleCitation FormatsGeneral ReferenceGeneral Reference Citation TextNature Atlas. "World's Oldest and Largest Species in Decline, IUCN Red List (IUCN)." Accessed August 30, 2026. https://dev-nature.interactiveatlas.org/sources/iucn-org-species-decline-feature.Copy General ReferenceAPA StyleAPA Style Citation TextNature Atlas. (n.d.). World's Oldest and Largest Species in Decline, IUCN Red List (IUCN). Retrieved August 30, 2026, from https://dev-nature.interactiveatlas.org/sources/iucn-org-species-decline-featureCopy APA StyleBibTeXBibTeX Citation Text@misc{natureatlas-world-s-oldest-and-largest-species-in-de, author = {Nature Atlas}, title = {World's Oldest and Largest Species in Decline, IUCN Red List (IUCN)}, year = {2026}, url = {https://dev-nature.interactiveatlas.org/sources/iucn-org-species-decline-feature}, note = {Accessed August 30, 2026} }Copy BibTeXReference and ClassificationVerifiedIUCN feature article naming the coast redwood (Sequoia sempervirens) among the world's oldest and largest species now assessed as being in decline, stating it grows to a height of 110 meters.FactsSourcesClaims Backed By This Source (13 claims)Comments (0)Reader Challenges (0 open reader challenges)FactsPublisherWell-attestedInternational Union for Conservation of NatureURLWell-attestedhttps://iucn.org/content/worlds-oldest-and-largest-species-decline-iucn-red-listSource TypeWell-attestedconservation-authoritySourcesWorld's Oldest and Largest Species in Decline, IUCN Red List (IUCN)International Union for Conservation of NatureView the SourceClaims Backed By This Source (13 claims)This source backs 13 claims across the atlas. As facts: 9 well-attested. As cited relationships: 1 holds. Plus 3 entities citing it as a general reference with no single fact or relationship attached.Disposition By TopicArticles, 5 claims: 3 well-attested, 2 general references.Species, 5 claims: 3 well-attested, 1 holds, 1 general references.Sources, 3 claims: 3 well-attested.Well-attested9ArticlesCoast Redwood: The Tallest Living Things on EarthSourcesWorld's Oldest and Largest Species in Decline, IUCN Red List (IUCN)SpeciesCoast RedwoodHolds1SpeciesCoast RedwoodGeneral References3ArticlesCoast Redwood: The Tallest Living Things on EarthSpeciesCoast RedwoodComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0 open reader challenges)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.View At A Past YearThe atlas records no dated fact of its own for this entry, so there is no other year to choose.Show This Year