The atlas bounds Basilosaurus only with the sampled Basilosaurus isis material from the Birket Qarun Formation, including named hind-limb specimen UM 93231 within a broad approximately 37.7–35 Ma formation envelope; this is not a global genus range. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range37.7–35 Ma
Content packagecetartiodactyla
PBDBtxn:36681
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
fossil-range · medium
The atlas bounds Basilosaurus only with the sampled Basilosaurus isis material from the Birket Qarun Formation, including named hind-limb specimen UM 93231 within a broad approximately 37.7–35 Ma formation envelope; this is not a global genus range.
claim:taxon:basilosaurus:fossil-range
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.