Beginnings, Cretaceous Period (145-66.0 mya), Birds, Evolution of Life (4600 mya-Present), Mesozoic Era (252-66 mya), Phanerozoic Eon (541 mya-Present)
Category: Phanerozoic Eon (541 mya-Present)
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Beginnings, Evolution of Life (4600 mya-Present), Ordovician Period (485-443 mya), land plants, Palaeozoic Era (541-252 mya), Phanerozoic Eon (541 mya-Present)
Beginnings, Evolution of Life: Ordovician Period (485-444 mya), land plants
Beginnings, Dinosaurs: Saurischians ('lizard-hipped'); Theropods, Sauropodomorphsns, Evolution of Life (4600 mya-Present), Jurassic Period (201-145 mya), Mesozoic Era (252-66 mya), Phanerozoic Eon (541 mya-Present)
Beginnings, Evolution of Life, Jurassic Period (201-145 mya), Dinosaurs: Saurischians (‘lizard-hipped’); Theropods, Sauropodomorphs
Beginnings, Carboniferous Period (359-299 mya), Reptiles, Evolution of Life (4600 mya-Present), Palaeozoic Era (541-252 mya), Phanerozoic Eon (541 mya-Present)
Beginnings, Evolution of Life: Carboniferous Period (359-299 mya), Reptiles
Beginnings, Cenozoic Era (66 mya-Present), Evolution of Life (4600 mya-Present), Neogene Period (66-2.58 mya), Palaeocene Epoch (66.0-56.0 mya), Mammals, Phanerozoic Eon (541 mya-Present)
Beginnings, Evolution of Life: Palaeocene Epoch (66.0-56.0 mya), Mammals
Beginnings, Cenozoic Era (66 mya-Present), Eocene Epoch (56.0-33.9 mya), Modern Mammals, Evolution of Life (4600 mya-Present), Neogene Period (66-2.58 mya), Phanerozoic Eon (541 mya-Present)