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Fossils tell the story of deep time. Period information can help organize a description, but specimen-level records still matter most.
Resource Hub Guide
Deep-time context for collectors navigating age, formation, and species relationships across Jurassic Depot inventory.
The final age of dinosaurs. Tyrannosaurus, Triceratops, Spinosaurus, mosasaurs. Ended with the Chicxulub impact extinction.
Context: Hell Creek, Kem Kem, Pierre Shale · Examples: Dinosaur teeth & bones, mosasaurs, ammonites
The classic dinosaur age. Allosaurus, Stegosaurus, Brachiosaurus, Archaeopteryx. Lush forests and shallow seas.
Context: Morrison, Solnhofen, Holzmaden · Examples: Sauropod bones, Stegosaurus plates, ammonites, ichthyosaurs
The dawn of dinosaurs. Early archosaurs, first true dinosaurs, and the recovery after the Permian extinction.
Context: Chinle, Moenkopi · Examples: Phytosaur teeth, petrified wood, early reptiles
After the dinosaurs: the rise of mammals. Early whales, primates, and giant birds.
Context: Green River, White River · Examples: Fossil fish, insects, early mammals, leaves
Megalodon ruled the oceans. Modern mammal groups diversified. Grasslands spread worldwide.
Context: Hawthorn, Calvert · Examples: Megalodon teeth, shark teeth, marine mammals
The Ice Age. Mammoths, mastodons, saber-tooth cats, dire wolves, and the rise of humans.
Context: La Brea, permafrost deposits · Examples: Mammoth tusks & teeth, Ice Age mammal bones