ERTH 2401 Lecture Notes - Lecture 3: Bone Bed, Ichthyosaurus, Theropoda
15 Oct 2018
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Alberta badlands: dinosaur provincial park, hadrosaur skin southeast alberta. Paleogeography: cretaceous western interior sea, 85 ma, sea level rose, warm period, atlantic ocean is forming = the mid atlantic ridge. Stratigraphic horizons: change sedimentary feces, late triassic chinle formation, colorado plateau, non-marine fluvial channels, floodplains, paleosols, marshes, and small lakes. Dienonychus site: famous cretaceous site, big claws to hunt, needs to jump onto its prey, endothermic or ectothermic debate during the time of john ostrom (yale. Feathered dinosaurs: most finds are in china, fine ash-rich sediment enhances preservation. Working in the sahara: go where no one wants to go to make discovery, pretty difficult to manoeuvre. Dinosaur fell in the mud and got stuck there, quick sedimentation. Sandstorm: dinosaur are marching along and they are engulfed, so much sand landed on them and they chocked and got buried, when palaeontologist find them, they are upright. Look at the setting: degree of articulation.
