Fossil Atlas library
Fossil questions and dinosaur discovery guides
Start here when you want the evidence behind the map: fossil-location guides, formation explainers, dating basics, and clear caveats about what Fossil Atlas records do and do not claim.
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Map and methodology guides
Modern fossil discovery maps
Why atlas pins show modern discovery locations, not ancient range reconstructions.
Location vs. ancient habitat
How discovery locations differ from reconstructed ancient habitats.
Fossil localities
What fossil localities are and why provenance makes a fossil useful.
Fossil formations
How rock units, stratigraphy, and age ranges support fossil records.
Dating dinosaur fossils
How paleontologists estimate fossil ages from rocks and stratigraphy.
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Where fossils were found
Where were T. rex fossils found?
Hell Creek, Lance, Scollard, and selected T. rex record context.
Where were Triceratops fossils found?
Selected Triceratops records from latest Cretaceous western North America.
Where were Velociraptor fossils found?
Gobi Desert and Flaming Cliffs context for Velociraptor records.
Where were Stegosaurus fossils found?
Morrison Formation context for selected Stegosaurus records.
Was Spinosaurus found in Morocco?
Egypt, Morocco, and Kem Kem context for Spinosaurus discoveries.
Where were Allosaurus fossils found?
Morrison Formation context with selected modern fossil discovery records and map caveats.
Where were Diplodocus fossils found?
Morrison Formation context with selected modern fossil discovery records and map caveats.
Where were Apatosaurus fossils found?
Morrison Formation context with selected modern fossil discovery records and map caveats.
Where were Ankylosaurus fossils found?
Hell Creek and related latest-Cretaceous units context with selected modern fossil discovery records and map caveats.
Where were Edmontosaurus fossils found?
Hell Creek, Lance, Frenchman, and related units context with selected modern fossil discovery records and map caveats.
Where were Pachycephalosaurus fossils found?
Hell Creek and related latest-Cretaceous units context with selected modern fossil discovery records and map caveats.
Where were Protoceratops fossils found?
Flaming Cliffs and Djadokhta Formation context context with selected modern fossil discovery records and map caveats.
Where were Oviraptor fossils found?
Flaming Cliffs and Djadokhta Formation context context with selected modern fossil discovery records and map caveats.
Where were Carcharodontosaurus fossils found?
Kem Kem Group context with selected modern fossil discovery records and map caveats.
Where were Suchomimus fossils found?
Niger and Echkar-region fossil context context with selected modern fossil discovery records and map caveats.
Where were Brachiosaurus fossils found?
Morrison and Tendaguru Formation context context with selected modern fossil discovery records and map caveats.
Where were Camarasaurus fossils found?
Morrison Formation context with selected modern fossil discovery records and map caveats.
Where were Ceratosaurus fossils found?
Morrison, Lourinha, and Tendaguru Jurassic context context with selected modern fossil discovery records and map caveats.
Where were Parasaurolophus fossils found?
Kirtland, Fruitland, and Dinosaur Park context context with selected modern fossil discovery records and map caveats.
Where were Centrosaurus fossils found?
Dinosaur Park Formation context with selected modern fossil discovery records and map caveats.
Where were Corythosaurus fossils found?
Dinosaur Park Formation context with selected modern fossil discovery records and map caveats.
Where were Gorgosaurus fossils found?
Dinosaur Park and Judith River context context with selected modern fossil discovery records and map caveats.
Where were Tarbosaurus fossils found?
Nemegt Formation context with selected modern fossil discovery records and map caveats.
Where were Iguanodon fossils found?
Wealden Group context with selected modern fossil discovery records and map caveats.
Where were Deinonychus fossils found?
Cloverly, Cedar Mountain, and Antlers Formation context context with selected modern fossil discovery records and map caveats.
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Formation and hotspot explainers
What is the Hell Creek Formation?
Geology, fossil record, and atlas links for Hell Creek.
What is the Morrison Formation?
Late Jurassic Morrison context and Stegosaurus links.
What dinosaurs were found in Hell Creek?
What Fossil Atlas currently says about Hell Creek dinosaur records.
What dinosaurs were found in the Morrison Formation?
Morrison dinosaurs, with clear separation between atlas coverage and broader context.
What is the Flaming Cliffs fossil site?
Bayanzag, Djadokhta Formation context, and Velociraptor links.
What Dinosaurs Were Found at the Flaming Cliffs?
Flaming Cliffs context for Velociraptor, Protoceratops, Oviraptor.
What Dinosaurs Were Found in the Kem Kem Group?
Kem Kem Group context for Spinosaurus, Carcharodontosaurus.
What Dinosaurs Were Found in the Echkar Formation?
Echkar Formation context for Suchomimus, Spinosaurus.
What Dinosaurs Were Found in the Dinosaur Park Formation?
Dinosaur Park Formation context for Centrosaurus, Corythosaurus, Gorgosaurus, Parasaurolophus.
What Dinosaurs Were Found in the Judith River Formation?
Judith River Formation context for Centrosaurus, Corythosaurus, Gorgosaurus.
What Dinosaurs Were Found in the Kirtland Formation?
Kirtland Formation context for Parasaurolophus.
What Dinosaurs Were Found in the Nemegt Formation?
Nemegt Formation context for Tarbosaurus, Protoceratops, Oviraptor.
What Dinosaurs Were Found in the Tendaguru Formation?
Tendaguru Formation context for Brachiosaurus, Ceratosaurus.
What Dinosaurs Were Found in the Lourinha Formation?
Lourinha Formation context for Ceratosaurus.
What Dinosaurs Were Found in the Wealden Group?
Wealden Group context for Iguanodon.
What Dinosaurs Were Found in the Cedar Mountain Formation?
Cedar Mountain Formation context for Deinonychus, Iguanodon.
What Dinosaurs Were Found in the Cloverly Formation?
Cloverly Formation context for Deinonychus.
What Dinosaurs Were Found in the Antlers Formation?
Antlers Formation context for Deinonychus.
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