Dinosaurs Midterm Flashcards

Dinosaurs Midterm Flashcards - Evidence the dinosaurs...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Evidence the dinosaurs existed = fossils (Bones, footprints, eggs, some skin) Extremely rare Only in sedimentary rocks Fossil: the evidence of organic life in rocks Life Death Preservation Survival Discovery-Dinosauria: Group of land-dwelling reptiles that walked with straight legs tucked under their bodies Joseph Leidy- 1855-First North American dinosaur -Based on teeth (Montana)- Hadrosaurus partial skelton (New Jersey)-First vertebrae paelontologist 1860s to 1900s mad rush to find fossils in North America and Europe bitter and much publicized competition between rival paleontologists Changing perceptions of Dinosaurs- First 50 yrs : sluggish, brutish, large, lizard-like- 1900-1950s : large, slimmed down, bipedal, dragging tails- 1970s : Fast, super-athletes- Last 8 years : Feathers First dinosaur described was from England Science cannot be used to investigate supernatural world Dinosaurs are-land-living-extinct reptiles-all over world-variety of sizes Gideon Mantell-1825-described first dinosaur Iguanadon-wife found large teeth and bone scraps -extrapolate to 30 m long Dinosaurs were NOT only giant reptiles of Mesozoic-Lived from 65-230 million years ago in Mesozoic era Oldest to Most Recent Triassic, Jurassic, Cretaceous First dinosaurs appears in Triassic (230 MA)...
View Full Document

Page1 / 7

Dinosaurs Midterm Flashcards - Evidence the dinosaurs...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online