page_title: 2003 in paleontology
section_title: Non-avian dinosaurs
hierarchical_section_title: 2003 in paleontology / Vertebrate paleozoology / Non-avian dinosaurs
caption_attribution_description: Restoration of Olorotitan.
context_page_description: Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks, burrows, cast-off parts, fossilised feces, palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science.
context_section_description: Data courtesy of George Olshevsky's dinosaur genera list.
caption: Olorotitan
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