International Chronostratigraphic Chart v2026/06

Ornithischia is displayed at 216.5–201.4 Ma only as the source-bounded uppermost-Triassic Eocursor sample and its ICS stage conversion, not an Ornithischia FAD or LAD. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Stegosauria is displayed at 174.7–100.5 Ma only as the review's stage-level body-fossil coverage, not exact origination or extinction instants. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Ankylosaurus is displayed at 72.1–66 Ma only as the stratigraphic coverage of the redescribed type and referred material, not a global genus FAD or LAD. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Ceratopsia is displayed at 113–100.5 Ma only as the Early Cretaceous Aquilops sample interval, not the origin or total duration of Ceratopsia. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Triceratops is displayed at 68–66 Ma only as the sampled latest-Maastrichtian material used in the Triceratops–Torosaurus test, not complete genus endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Hadrosauridae is displayed at 100.5–66 Ma only as the source's global historical-biogeography sample, not an exhaustive family record or exact endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Edmontosaurus is displayed at 73–66 Ma only as the stratigraphic envelope of the sampled skulls, not an independently established global genus duration. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Saurischia is displayed at 215–213 Ma only as the dated Late Triassic Tawa-bearing interval used in the sampled saurischian analysis, not a Saurischia origin date. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Sauropodomorpha is displayed at 231.4–225.9 Ma only as the Carnian Panphagia-bearing interval, not a global sauropodomorph first appearance. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Brachiosauridae is displayed at 154.8–145 Ma only as the Late Jurassic type-material comparison for Brachiosaurus and Giraffatitan, not the complete family range. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Diplodocidae is displayed at 168–125 Ma only as the broad stage envelope of the revision's specimen sample, not a claim of continuous occupancy or exact family endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Titanosauria is displayed at 101.8–101.4 Ma only as the directly dated Patagotitan quarry window, not the first or last appearance of Titanosauria. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Theropoda is displayed at 233.2–66 Ma only as the review's non-avian theropod coverage; living birds and exact global endpoints are outside this claim. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Tyrannosauridae is displayed at 84–66 Ma only as the review-bounded sampled family record, not exact global origination or extinction. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Spinosauridae is displayed at 145–93.9 Ma only as the review's taxonomically qualified fossil coverage, not exact family FAD/LAD. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Spinosaurus is displayed at 100.5–93.9 Ma only as the Cenomanian specimen-bearing interval for FSAC-KK 11888, not the complete genus range. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Dromaeosauridae is displayed at 167–66 Ma only as the review's sampled Jurassic–Cretaceous envelope, not exact global family endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Velociraptor is displayed at 75–71 Ma only as the Campanian specimen interval for IGM 100/981, not the full range of Velociraptor. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Homo is displayed at 1.85–1.77 Ma only as the dated Dmanisi assemblage only, not the origin, complete range or living continuation of Homo. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Homo sapiens is displayed at 0.04688–0.04321 Ma only as one directly dated individual, not the origin or complete range of Homo sapiens. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Homo neanderthalensis is displayed at 0.055–0.0455 Ma only as the dated Vindija specimen envelope, not the complete duration of Neanderthals. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

plesiadapiformes is displayed at 66–34 Ma only as the review's heterogeneous sampled assemblage, not a monophyletic crown-primate range. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

adapiformes is displayed at 56–34 Ma only as the review's sampled Eocene record, not an ancestor chain or exact global endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Cetacea is displayed at 53–0 Ma only as a review-bounded fossil-to-living navigation envelope, not an exact cetacean origination date. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

Basilosauridae is displayed at 41–34 Ma only as the review's sampled late-Eocene radiation, not exact family FAD/LAD. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

cetaceamorpha is displayed at 53–0 Ma only as an editorial navigation envelope across separately sampled fossils and living whales, not one observed lineage or origin date. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

raoellidae is displayed at 48–47 Ma only as the sampled raoellid interval in the whale-origin review, not a direct whale ancestor or global family range. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

pakicetidae is displayed at 50–47 Ma only as the review's sampled pakicetid interval, not a linear ancestral stage or exact endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

ambulocetidae is displayed at 48–47 Ma only as the review's sampled ambulocetid interval, not a linear ancestral stage or exact endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

protocetidae is displayed at 47–37.7 Ma only as the review's diverse protocetid sample, not uninterrupted global occupancy or exact endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

neoceti is displayed at 36–0 Ma only as a synthesis-bounded crown-whale navigation envelope, not a directly observed crown split. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

mysticeti is displayed at 34–0 Ma only as the review's sampled stem-to-living mysticete envelope, not an exact clade origin. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.

odontoceti is displayed at 34–0 Ma only as the review's sampled stem-to-living odontocete envelope, not an exact clade origin. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.