Archosauria

Archosauria or archosaurs is a clade of diapsid sauropsid tetrapods, with birds and crocodilians being the only known extant representatives. Although broadly classified as reptiles, which traditionally exclude birds, the cladistic sense of the term includes all living and extinct relatives of birds and crocodilians such as non-avian dinosaurs, pterosaurs, phytosaurs, aetosaurs and rauisuchians as well as many Mesozoic marine reptiles. Modern paleontologists define Archosauria as a crown group that includes the most recent common ancestor of living birds and crocodilians, and all of its descendants.

Archosauria

This Photo was taken by Timothy A. Gonsalves . Feel free to use my photos, but please mention me as the author. I wou… · CC BY-SA 4.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

On record

Recorded, not inferred
Also called
archosaurPBDB
Sits inside
EucrocopodaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Diapsida

Time the record covers

At least 250 million years on record.

The record covers at least 250.8 Mya to 11.7 ka. No occurrence read is dated outside 259.857 Mya to 0 Mya.

Permian — about 1 of 12000 occurrencesEarly Triassic — about 1 of 12000 occurrencesMiddle Triassic — about 64 of 12000 occurrencesLate Triassic — about 557 of 12000 occurrencesLate TriassicEarly Jurassic — about 578 of 12000 occurrencesEarly JurassicMiddle Jurassic — about 351 of 12000 occurrencesLate Jurassic — about 1220 of 12000 occurrencesEarly Cretaceous — about 1901 of 12000 occurrencesEarly CretaceousLate Cretaceous — about 5252 of 12000 occurrencesLate CretaceousPaleocene — about 94 of 12000 occurrencesEocene — about 428 of 12000 occurrencesEoceneOligocene — about 45 of 12000 occurrencesMiocene — about 431 of 12000 occurrencesPliocene — about 313 of 12000 occurrencesPleistocene — about 703 of 12000 occurrences265–256 Mya — about 0.3 occurrences256–247 Mya — about 2 occurrences247–239 Mya — about 54 occurrences239–230 Mya — about 82 occurrences230–221 Mya — about 135 occurrences221–212 Mya — about 161 occurrences212–203 Mya — about 156 occurrences203–194 Mya — about 423 occurrences194–186 Mya — about 118 occurrences186–177 Mya — about 59 occurrences177–168 Mya — about 84 occurrences168–159 Mya — about 301 occurrences159–150 Mya — about 448 occurrences150–141 Mya — about 795 occurrences141–133 Mya — about 223 occurrences133–124 Mya — about 315 occurrences124–115 Mya — about 526 occurrences115–106 Mya — about 519 occurrences106–97 Mya — about 457 occurrences97–88 Mya — about 424 occurrences88–80 Mya — about 1117 occurrences80–71 Mya — about 2068 occurrences71–62 Mya — about 1498 occurrences62–53 Mya — about 187 occurrences53–44 Mya — about 177 occurrences44–35 Mya — about 102 occurrences35–27 Mya — about 38 occurrences27–18 Mya — about 91 occurrences18–8.8 Mya — about 229 occurrences8.8–0 Mya — about 1209 occurrences250.8 Mya11.7 ka265 Mya0 Mya

12,000+ occurrences of Archosauria on record. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.

When

12,000 occurrences read

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. The read hit its cap, so every figure above is a floor and the shares are of the occurrences read. More on what this infers.

Found in

at least 1053 formations

  • Morrison FormationColorado, Wyoming, Utah · US · 165.3–143.1 Mya671
  • Hell Creek Formation · Montana GroupMontana, South Dakota, North Dakota · US · 72.2–66 Mya628
  • Dinosaur Park Formation · Belly River GroupAlberta, Saskatchewan · CA · 83.6–72.2 Mya568
  • Oldman Formation · Belly River GroupAlberta · CA · 83.6–72.2 Mya284
  • Fruitland/Kirtland FormationNew Mexico · US · 83.6–72.2 Mya271
  • Lance Formation · Montana GroupWyoming, South Dakota, Utah · US · 72.2–66 Mya251
Morrison — 39.07°N, 108.70°WMorrison — 41.89°N, 106.04°WMorrison — 42.04°N, 106.39°WMorrison — 39.65°N, 105.19°WMorrison — 42.15°N, 105.92°WMorrison — 42.02°N, 106.05°WMorrison — 43.38°N, 108.12°WMorrison — 43.63°N, 108.20°WMorrison — 39.15°N, 108.77°WMorrison — 40.42°N, 109.21°WMorrison — 35.20°N, 107.13°WMorrison — 40.44°N, 109.30°WMorrison — 38.12°N, 109.32°WMorrison — 38.54°N, 105.22°WMorrison — 38.81°N, 108.39°WMorrison — 34.94°N, 107.13°WMorrison — 43.43°N, 103.69°WMorrison — 45.25°N, 108.75°WMorrison — 36.21°N, 103.63°WMorrison — 35.32°N, 106.94°WMorrison — 35.56°N, 106.77°WMorrison — 35.60°N, 103.74°WMorrison — 38.45°N, 107.40°WMorrison — 41.98°N, 106.14°WMorrison — 41.88°N, 106.08°WMorrison — 39.24°N, 109.00°WMorrison — 38.58°N, 108.40°WMorrison — 44.54°N, 107.78°WMorrison — 44.65°N, 107.82°WMorrison — 41.97°N, 106.29°WMorrison — 38.73°N, 111.27°WMorrison — 38.85°N, 108.48°WMorrison — 38.55°N, 105.24°WMorrison — 42.55°N, 106.69°WMorrison — 43.65°N, 106.78°WMorrison — 36.90°N, 102.83°WMorrison — 40.53°N, 109.39°WMorrison — 36.93°N, 102.97°WMorrison — 39.17°N, 109.25°WMorrison — 38.54°N, 106.81°WMorrison — 38.64°N, 108.19°WMorrison — 45.54°N, 110.62°WMorrison — 44.47°N, 103.31°WMorrison — 39.01°N, 110.37°WMorrison — 41.88°N, 105.89°WMorrison — 44.53°N, 103.83°WMorrison — 44.18°N, 103.34°WMorrison — 43.41°N, 103.41°WMorrison — 44.46°N, 104.73°WMorrison — 44.25°N, 104.41°WMorrison — 39.32°N, 110.69°WMorrison — 45.45°N, 108.10°WMorrison — 35.32°N, 106.31°WMorrison — 35.58°N, 106.94°WMorrison — 40.09°N, 105.94°WMorrison — 37.53°N, 103.68°WMorrison — 37.78°N, 103.46°WMorrison — 38.81°N, 108.32°WMorrison — 40.47°N, 109.18°WMorrison — 38.32°N, 108.83°WHell Creek — 47.64°N, 106.57°WHell Creek — 47.70°N, 106.23°WHell Creek — 47.80°N, 106.10°WHell Creek — 47.68°N, 106.43°WHell Creek — 45.14°N, 102.50°WHell Creek — 46.47°N, 104.02°WHell Creek — 47.54°N, 107.08°WHell Creek — 45.95°N, 103.96°WHell Creek — 46.10°N, 103.30°WHell Creek — 45.98°N, 103.75°WHell Creek — 46.15°N, 103.81°WHell Creek — 46.18°N, 103.84°WHell Creek — 46.30°N, 103.98°WHell Creek — 46.41°N, 103.94°WHell Creek — 46.38°N, 103.96°WHell Creek — 46.45°N, 103.02°WHell Creek — 46.33°N, 103.90°WHell Creek — 45.94°N, 103.95°WHell Creek — 47.57°N, 107.10°WHell Creek — 47.52°N, 106.40°WHell Creek — 45.55°N, 105.11°WHell Creek — 47.60°N, 107.00°WHell Creek — 45.53°N, 101.63°WHell Creek — 47.88°N, 106.20°WHell Creek — 45.76°N, 104.95°WHell Creek — 47.62°N, 107.32°WHell Creek — 47.57°N, 106.31°WHell Creek — 48.06°N, 105.40°WHell Creek — 47.53°N, 106.92°WHell Creek — 45.85°N, 104.83°WHell Creek — 47.96°N, 106.46°WHell Creek — 47.84°N, 106.16°WHell Creek — 47.52°N, 106.98°WHell Creek — 47.65°N, 106.65°WHell Creek — 47.60°N, 106.38°WHell Creek — 47.55°N, 107.25°WHell Creek — 47.52°N, 107.18°WHell Creek — 47.07°N, 106.92°WHell Creek — 47.60°N, 107.23°WHell Creek — 47.73°N, 106.50°WHell Creek — 47.63°N, 106.20°WHell Creek — 47.64°N, 106.70°WHell Creek — 47.67°N, 106.27°WHell Creek — 45.46°N, 103.84°WHell Creek — 46.90°N, 101.50°WHell Creek — 45.50°N, 104.16°WHell Creek — 47.81°N, 106.28°WHell Creek — 47.68°N, 105.98°WHell Creek — 47.57°N, 106.76°WHell Creek — 46.09°N, 100.63°WHell Creek — 47.10°N, 104.66°WHell Creek — 45.87°N, 103.79°WHell Creek — 45.65°N, 103.62°WHell Creek — 45.89°N, 104.55°WHell Creek — 46.26°N, 105.12°WHell Creek — 45.10°N, 102.09°WDinosaur Park — 50.74°N, 111.53°WDinosaur Park — 50.75°N, 111.46°WDinosaur Park — 50.72°N, 111.56°WDinosaur Park — 50.79°N, 111.60°WDinosaur Park — 50.81°N, 111.32°WDinosaur Park — 50.75°N, 111.40°WDinosaur Park — 49.95°N, 110.27°WDinosaur Park — 50.73°N, 111.30°WDinosaur Park — 49.12°N, 110.47°WDinosaur Park — 50.73°N, 111.80°WDinosaur Park — 50.13°N, 111.69°WDinosaur Park — 50.76°N, 110.02°WDinosaur Park — 50.41°N, 110.29°WDinosaur Park — 50.40°N, 111.10°WDinosaur Park — 49.14°N, 110.42°WDinosaur Park — 50.60°N, 111.62°WDinosaur Park — 50.75°N, 111.40°WDinosaur Park — 50.57°N, 111.51°WDinosaur Park — 50.82°N, 111.86°WDinosaur Park — 51.95°N, 112.93°WDinosaur Park — 49.99°N, 111.42°WDinosaur Park — 51.56°N, 108.14°WDinosaur Park — 49.45°N, 110.82°WDinosaur Park — 51.44°N, 110.39°WDinosaur Park — 51.47°N, 110.39°WDinosaur Park — 52.45°N, 109.17°WOldman — 49.08°N, 110.68°WOldman — 50.75°N, 111.49°WOldman — 50.73°N, 111.80°WOldman — 50.63°N, 111.62°WOldman — 49.10°N, 110.94°WOldman — 49.08°N, 110.84°WOldman — 49.16°N, 110.72°WOldman — 50.83°N, 111.32°WOldman — 49.20°N, 110.60°WOldman — 50.81°N, 111.63°WOldman — 50.90°N, 111.80°WOldman — 50.72°N, 111.48°WOldman — 50.69°N, 111.62°WOldman — 49.28°N, 112.58°WOldman — 49.14°N, 112.58°WOldman — 49.28°N, 112.20°WOldman — 50.72°N, 111.40°WOldman — 50.47°N, 110.39°WOldman — 50.75°N, 111.42°WOldman — 50.71°N, 110.13°WOldman — 49.36°N, 110.58°WOldman — 50.64°N, 110.91°WFruitland/Kirtland — 36.29°N, 108.10°WFruitland/Kirtland — 36.27°N, 108.23°WFruitland/Kirtland — 36.19°N, 108.09°WFruitland/Kirtland — 36.06°N, 107.96°WFruitland/Kirtland — 36.33°N, 108.05°WFruitland/Kirtland — 36.28°N, 108.26°WFruitland/Kirtland — 36.02°N, 107.64°WFruitland/Kirtland — 36.15°N, 107.83°WFruitland/Kirtland — 35.91°N, 106.54°WFruitland/Kirtland — 35.97°N, 107.50°WFruitland/Kirtland — 36.17°N, 107.96°WFruitland/Kirtland — 36.17°N, 107.94°WFruitland/Kirtland — 36.02°N, 107.80°WFruitland/Kirtland — 35.90°N, 107.46°WFruitland/Kirtland — 36.24°N, 108.19°WFruitland/Kirtland — 36.14°N, 108.11°WFruitland/Kirtland — 36.10°N, 107.85°WFruitland/Kirtland — 35.46°N, 108.66°WFruitland/Kirtland — 35.92°N, 107.39°WFruitland/Kirtland — 36.84°N, 107.77°WFruitland/Kirtland — 35.91°N, 107.21°WLance — 43.35°N, 104.48°WLance — 43.12°N, 104.64°WLance — 44.24°N, 109.02°WLance — 43.49°N, 104.46°WLance — 43.30°N, 104.37°WLance — 44.77°N, 100.70°WLance — 41.57°N, 108.67°WLance — 41.57°N, 108.65°WLance — 41.64°N, 107.65°WLance — 43.13°N, 104.49°WLance — 43.00°N, 104.50°WLance — 43.17°N, 104.57°WLance — 43.44°N, 104.41°WLance — 42.20°N, 104.46°WLance — 42.58°N, 105.39°WLance — 43.17°N, 104.91°WLance — 43.14°N, 104.91°WLance — 43.27°N, 104.59°WLance — 45.67°N, 101.48°WLance — 44.09°N, 109.18°WLance — 43.18°N, 104.53°WLance — 37.58°N, 111.83°WLance — 45.93°N, 103.92°WLance — 42.05°N, 106.84°WLance — 44.29°N, 108.84°WLance — 47.40°N, 108.27°WLance — 48.29°N, 105.84°WLance — 43.80°N, 104.62°WLance — 45.75°N, 101.20°WLance — 45.00°N, 103.18°WLance — 42.65°N, 105.24°WLance — 43.28°N, 104.67°WLance — 43.14°N, 104.71°WLance — 42.09°N, 106.88°WLance — 41.91°N, 104.20°WLance — 43.20°N, 104.66°WLance — 43.13°N, 104.07°WLance — 43.49°N, 104.61°WLance — 45.04°N, 108.80°WLance — 42.97°N, 105.53°WLance — 43.37°N, 104.70°WLance — 45.67°N, 101.39°WWillwood — 43.03°N, 108.38°WWillwood — 43.95°N, 107.57°WWillwood — 44.30°N, 109.00°WWillwood — 44.83°N, 109.09°WWillwood — 44.63°N, 108.89°WWillwood — 44.44°N, 108.63°WWillwood — 44.50°N, 108.67°WWillwood — 44.56°N, 108.70°WWillwood — 44.59°N, 108.62°WWillwood — 44.53°N, 108.43°WWillwood — 44.37°N, 108.67°WWillwood — 44.65°N, 108.54°WWillwood — 44.60°N, 108.32°WWillwood — 44.59°N, 108.41°WWillwood — 44.53°N, 108.32°WWillwood — 44.65°N, 108.72°WWillwood — 44.65°N, 108.54°WWillwood — 44.52°N, 108.57°WWillwood — 44.65°N, 108.90°WWillwood — 44.65°N, 108.83°WWillwood — 44.64°N, 108.76°WWillwood — 44.41°N, 108.79°WWillwood — 44.33°N, 108.77°WWillwood — 43.92°N, 108.66°WCloverly — 45.44°N, 108.14°WCloverly — 45.44°N, 108.16°WCloverly — 46.34°N, 109.69°WCloverly — 45.49°N, 108.52°WCloverly — 44.49°N, 107.86°WCloverly — 44.54°N, 108.01°WCloverly — 44.96°N, 108.30°WCloverly — 45.12°N, 108.71°WCloverly — 45.15°N, 108.73°WCloverly — 45.20°N, 108.81°WCloverly — 45.36°N, 108.75°WCloverly — 43.73°N, 108.33°WCloverly — 43.22°N, 107.57°WCloverly — 43.19°N, 107.69°WCloverly — 45.34°N, 108.81°WCloverly — 44.69°N, 108.24°WCloverly — 45.45°N, 108.10°WCloverly — 45.38°N, 108.26°WCloverly — 45.41°N, 108.04°WCloverly — 46.27°N, 109.89°WCloverly — 45.26°N, 108.41°WCloverly — 45.49°N, 108.73°WPortland — 41.57°N, 72.63°WPortland — 42.26°N, 72.57°WPortland — 41.81°N, 72.55°WPortland — 42.10°N, 72.59°WPortland — 41.90°N, 72.57°WPortland — 42.59°N, 72.60°WPortland — 42.61°N, 72.51°WPortland — 42.52°N, 72.55°WPortland — 41.73°N, 72.66°WPortland — 41.69°N, 72.64°WPortland — 42.17°N, 72.67°WPortland — 42.16°N, 72.58°WPortland — 41.55°N, 72.69°WTendaguru — 9.71°S, 39.23°ETendaguru — 9.69°S, 39.25°ETendaguru — 9.79°S, 39.12°ETendaguru — 9.80°S, 39.31°ETwo Medicine — 47.81°N, 112.18°WTwo Medicine — 47.82°N, 112.66°WTwo Medicine — 48.63°N, 113.75°WTwo Medicine — 48.48°N, 112.70°WTwo Medicine — 48.91°N, 112.64°WTwo Medicine — 48.97°N, 112.65°WTwo Medicine — 48.65°N, 112.97°WTwo Medicine — 47.77°N, 112.29°WTwo Medicine — 48.48°N, 112.58°WTwo Medicine — 48.46°N, 112.47°WTwo Medicine — 47.63°N, 112.58°WTwo Medicine — 47.99°N, 112.28°WTwo Medicine — 48.74°N, 112.73°WTwo Medicine — 48.30°N, 112.34°WTwo Medicine — 48.94°N, 112.65°WChinle — 34.44°N, 109.46°WChinle — 36.32°N, 106.47°WChinle — 35.05°N, 109.83°WChinle — 35.84°N, 111.25°WChinle — 35.09°N, 109.79°WChinle — 34.94°N, 109.77°WChinle — 37.80°N, 110.33°WChinle — 36.21°N, 106.34°WChinle — 34.53°N, 109.32°WChinle — 35.12°N, 110.55°WChinle — 36.31°N, 106.45°WChinle — 36.34°N, 106.87°WChinle — 38.65°N, 108.91°WChinle — 40.58°N, 109.42°WChinle — 38.00°N, 111.13°WChinle — 34.83°N, 109.82°WChinle — 34.51°N, 109.36°WJudith River — 46.47°N, 109.30°WJudith River — 46.46°N, 109.41°WJudith River — 48.95°N, 110.62°WJudith River — 47.77°N, 108.95°WJudith River — 47.90°N, 109.00°WJudith River — 47.74°N, 109.62°WJudith River — 47.81°N, 109.59°WJudith River — 48.92°N, 110.58°WJudith River — 47.78°N, 109.38°WJudith River — 48.97°N, 110.93°WJudith River — 48.98°N, 110.45°WJudith River — 46.10°N, 109.10°WJudith River — 46.40°N, 109.66°WJudith River — 46.42°N, 109.27°WJudith River — 46.44°N, 109.83°WJudith River — 46.23°N, 108.98°WJudith River — 46.24°N, 109.59°WJudith River — 48.57°N, 109.99°WJudith River — 48.56°N, 107.78°WJudith River — 47.40°N, 109.65°WLameta — 21.18°N, 80.37°ELameta — 23.35°N, 80.37°ELameta — 23.17°N, 79.97°ELameta — 23.06°N, 73.34°ELameta — 17.33°N, 78.21°ELameta — 20.25°N, 79.10°ELameta — 20.90°N, 79.28°ELameta — 22.92°N, 79.32°ELameta — 20.75°N, 79.48°ELameta — 22.34°N, 74.79°ELameta — 23.17°N, 79.95°ELameta — 23.10°N, 79.84°ELameta — 20.35°N, 79.05°ELameta — 23.50°N, 81.56°ELameta — 23.03°N, 73.33°ELameta — 23.10°N, 73.38°ELameta — 22.86°N, 73.34°ELameta — 22.89°N, 74.28°ELameta — 22.96°N, 74.22°ELameta — 22.95°N, 74.14°ELameta — 22.25°N, 74.61°ELameta — 20.75°N, 79.42°ELameta — 22.13°N, 74.38°ELameta — 22.98°N, 79.28°ELameta — 23.21°N, 80.10°ELameta — 23.34°N, 80.18°ELameta — 23.37°N, 80.46°ELameta — 21.00°N, 79.18°ELameta — 23.77°N, 78.72°ELameta — 23.09°N, 74.15°ELameta — 22.14°N, 74.71°ELameta — 20.71°N, 79.29°ELameta — 23.17°N, 74.12°ELameta — 20.53°N, 79.27°EKirtland — 36.31°N, 108.08°WKirtland — 36.27°N, 108.17°WKirtland — 36.19°N, 107.89°WKirtland — 36.31°N, 108.05°WKirtland — 36.10°N, 108.09°WKirtland — 36.50°N, 108.08°WKirtland — 37.82°N, 110.35°WKirtland — 36.37°N, 108.26°WKirtland — 36.41°N, 108.35°WKirtland — 36.49°N, 108.57°WKirtland — 36.29°N, 108.55°WKirtland — 36.36°N, 108.57°WKirtland — 36.17°N, 107.80°WKirtland — 36.14°N, 107.80°WKirtland — 36.39°N, 108.07°WKirtland — 36.97°N, 108.17°WKirtland — 36.09°N, 108.01°WKirtland — 36.52°N, 108.41°WKirtland — 36.49°N, 108.32°WKirtland — 36.70°N, 108.30°WJindong — 34.91°N, 128.15°EJindong — 34.90°N, 128.15°EJindong — 34.99°N, 128.45°EJindong — 34.99°N, 128.40°EJindong — 35.07°N, 128.42°EJindong — 35.07°N, 128.28°EJindong — 34.97°N, 128.32°EJindong — 35.43°N, 128.52°EYorktown — 35.36°N, 76.82°WBissekty — 42.12°N, 62.66°EBissekty — 40.70°N, 72.60°EBissekty — 42.54°N, 63.30°EBissekty — 42.02°N, 63.30°EBissekty — 42.60°N, 63.47°EBissekty — 41.68°N, 63.82°EGlen Rose Limestone — 32.23°N, 98.23°WGlen Rose Limestone — 31.85°N, 98.62°WGlen Rose Limestone — 30.10°N, 98.42°WGlen Rose Limestone — 29.44°N, 100.12°WGlen Rose Limestone — 30.50°N, 99.40°WGlen Rose Limestone — 29.10°N, 99.44°WGlen Rose Limestone — 29.60°N, 99.12°WGlen Rose Limestone — 29.63°N, 99.26°WGlen Rose Limestone — 29.63°N, 99.42°WGlen Rose Limestone — 29.72°N, 99.00°WGlen Rose Limestone — 30.07°N, 99.33°WGlen Rose Limestone — 30.00°N, 99.11°WGlen Rose Limestone — 30.30°N, 99.05°WGlen Rose Limestone — 29.84°N, 98.22°WGlen Rose Limestone — 30.10°N, 98.50°WGlen Rose Limestone — 30.30°N, 98.30°WGlen Rose Limestone — 30.20°N, 97.98°WGlen Rose Limestone — 30.35°N, 97.79°WGlen Rose Limestone — 30.50°N, 97.91°WGlen Rose Limestone — 30.65°N, 97.67°WGlen Rose Limestone — 30.70°N, 98.09°WGlen Rose Limestone — 30.91°N, 98.03°WGlen Rose Limestone — 31.19°N, 98.13°WGlen Rose Limestone — 31.45°N, 98.25°WGlen Rose Limestone — 31.59°N, 98.13°WGlen Rose Limestone — 31.63°N, 98.21°WGlen Rose Limestone — 31.69°N, 98.38°WGlen Rose Limestone — 31.88°N, 97.63°WGlen Rose Limestone — 32.23°N, 97.76°WGlen Rose Limestone — 32.25°N, 97.81°WGlen Rose Limestone — 32.25°N, 97.72°WGlen Rose Limestone — 32.37°N, 97.69°WGlen Rose Limestone — 29.82°N, 98.77°WGlen Rose Limestone — 29.49°N, 99.21°WKoobi Fora — 3.90°N, 36.24°EKoobi Fora — 3.98°N, 36.32°EKoobi Fora — 4.31°N, 36.27°EKoobi Fora — 4.24°N, 36.26°EKoobi Fora — 4.29°N, 36.23°EKoobi Fora — 3.77°N, 36.44°EKoobi Fora — 3.78°N, 36.33°EKoobi Fora — 3.59°N, 36.24°EKoobi Fora — 3.87°N, 36.37°EKoobi Fora — 3.94°N, 36.25°EKoobi Fora — 4.18°N, 36.42°EKoobi Fora — 4.08°N, 36.35°EKoobi Fora — 4.07°N, 36.37°EAguja — 29.14°N, 103.20°WAguja — 29.20°N, 103.55°WAguja — 29.32°N, 103.52°WAguja — 29.20°N, 103.20°WAguja — 29.25°N, 103.55°WCedar Mountain — 38.80°N, 111.17°WCedar Mountain — 38.83°N, 109.57°WCedar Mountain — 38.72°N, 109.69°WCedar Mountain — 38.78°N, 109.71°WCedar Mountain — 38.94°N, 111.07°WCedar Mountain — 39.14°N, 110.90°WCedar Mountain — 39.21°N, 111.02°WCedar Mountain — 39.16°N, 110.86°WCedar Mountain — 39.05°N, 111.04°WCedar Mountain — 38.81°N, 109.76°WCedar Mountain — 32.83°N, 109.57°WCedar Mountain — 38.91°N, 110.10°WCedar Mountain — 38.83°N, 109.47°WCedar Mountain — 39.00°N, 111.00°WCedar Mountain — 38.66°N, 111.24°WCedar Mountain — 39.18°N, 110.11°WFruitland — 36.06°N, 107.97°WFruitland — 36.29°N, 108.23°WFruitland — 36.49°N, 108.49°WFruitland — 36.15°N, 107.98°WFruitland — 36.26°N, 108.26°WFruitland — 36.18°N, 108.21°WFruitland — 36.25°N, 108.06°WFruitland — 35.95°N, 108.00°WFruitland — 36.21°N, 105.64°WFruitland — 36.21°N, 108.08°WFruitland — 37.86°N, 110.10°WFruitland — 36.00°N, 107.00°WFruitland — 36.99°N, 108.17°WFruitland — 36.63°N, 108.48°WFruitland — 36.70°N, 108.42°WDjadokhta — 44.25°N, 103.33°EDjadokhta — 44.20°N, 103.73°EDjadokhta — 43.66°N, 100.90°EDjadokhta — 44.00°N, 104.00°EDjadokhta — 44.22°N, 103.27°EDjadokhta — 44.13°N, 103.56°EDjadokhta — 42.08°N, 102.17°E

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The named rock units Archosauria has been recovered from, largest first. Drawn where the rock is now, not where it formed. The read hit its cap, so each count is a floor. 1,029 further formations hold fewer occurrences each and are not listed. 1,512 occurrences have no formation on record, which is common for older literature.

Found in the same rock

2,375 taxa

The Paleobiology Database records at least 931 sites for Archosauria, and this reads 240 of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.

Entered from

at least 3,334 references

Each of the 12,000 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. That read hit its cap, so each count is a floor. 3,322 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content3

Picture of Archosauria

Credit
This Photo was taken by Timothy A. Gonsalves . Feel free to use my photos, but please mention me as the author. I wou…
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Archosauria indet. · ZION

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itEucrocopoda through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Cope 1869)