BSC1005 Dinosaur unit study guide!!
BSC1005 Dinosaur unit study guide!! BSC 1005 - 0001
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This 5 page Study Guide was uploaded by Alex Webb on Friday October 14, 2016. The Study Guide belongs to BSC 1005 - 0001 at Florida State University taught by George Bates, Gregory Erickson, Hengli Tang, Steven Lenhert, Carolyn Schultz in Summer 2016. Since its upload, it has received 15 views. For similar materials see General Biology for non-majors in Science at Florida State University.
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Date Created: 10/14/16
Dinosaur test bsc1005 Paleontologist: ancient organism Paleobiology: ancient life Scrotum humanum: first scientific name given to a dinosaur. This is a thigh bone from a meat eating dinosaur Thomas Jefferson: fossil fanatic and had nickname called mr. mammoth mosasaurus not a dinosaur and is a long sea monster buckland: describing the first scientific valid dinosaur Gideon mantel: found the teeth and bones of an animal called iguanodon= iguana tooth this dinosaur was the first described herbivorous(plant eating) dinosaur sir Richard owen: categorized the characteristics of dinosaurs and said they were in a reptile group ( territorialized- living on land, they lay hard shelled eggs) two major groupings of dinosaurs are: ornithischians with pelvic bones shaped like those of birds ex iguanodon- not closely related to birds despite the name saurschians with pelves like lizards. For ex: megalosaurus marsh and Edward cope: fossil feud they would steal eachothers finds pay more money to out find things marsh pointed out that cope put the head of a plesiosaur(long necked sea monster) on its tail louis dollo- first paleobiologist ( person interested in the lives of dinosaurs and their ecosystem) deinonychus: terrible claw this dinosaur did not fit the sluggish behemoth mold Robert baker took the deinonychus story and ran with it Mesozoic era where the first dinosaurs showed up 238 million years ago called the “age of dinosaurs” three major divisions of the Mesozoic era: Triassic period- oldest dinosaurs show up here. Pangea was here Jurassic period- largest dinosaurs Cretaceous period: where dinosaurs went extinct Best isotope for dating rocks in age of dinosaur is Uranium 235 which breaks down into lead 207 Half life: The amount of time it takes for half of the original material to break down Plate tectonics: When the continental movements are driven by volcanic seafloor spreading in the oceans and these split Pangea into our 7 continents Nearly all dinosaurs were terrestrial animals Plesiosaurs: The supposed loch ness monster Pterosaurs: Bat like throughout the age of dinosaurs Fossils are evidence of ancient life They used trace fossils Not the remains itself but traces of ancient life Ex: prints, eggs, skin impressions Coprolites: Fossilized feces What rock sediment commonly preserve dinosaur skeletons Sedimentary Thyreophorans included two major groups: Ankylosaurs- the dinosaur tanks Stegosaurs: the plated lizards, with plates and spikes along or beside the backbone Endocast: Formed by sediments that infilled the brain cavity during the fossilization process and became solidified Sexual dimorphism We don’t know how to differentiate the sexes of dinosaurs Some dinosaurs were fossorial: Dug dens and burrows Over splitting: Naming more species than really exist Theories about the function of pachyecephalosaurid skills include Structures for head on butting Structures for flank butting(horned mammals) Finite-element modeling Used a computer modeling to determine the biomechanical performance of the domes- this support the head on budding theory Protoceratopsids: Comes from asia and live in the desert Skull shows sexual dimorphism Found buried in sand dunes Oviraptor: They were found over eggs at the ptoyoceratopsians nesting and said he was an egg stealer but turned out to be the egg layer Diplodocids: Longest dinosaurs Sauropsedion: Tallest dinosaur at 56 feet Brachiosaurs: This is known as island dwarfism and is common in the mammalian fossil record Osborn Was in denial that this killer dinosaur (tyrannosaurs rex) had such tiny arms What do we know from the trackway of dinosaurs: They don’t drag their tails What do brain cast of T.Rex show us Had large olfactory bulbs (good sense of smell) Good sense of visual acuity Dinosaurs were both Predators Scavengers How did they believe they could tell the sex of dinosaurs? The bones in their tail could tell u the sex but this is not true They said females: the chevron bone is shorter in the female and is attached to a vertebra further from the pelvis- they said this allowed for an easier passage of eggs T.Rex grew..? 5 lbs a day and lived to 30 years of age T.Rex characterstics: could not run as an adult but could amble ( still fast like 23 miles per hour) true cannibal we do not know the metabolism of what dinosaurs were like (true or false) true all dinosaurs grew faster than reptiles (true or false) true dinosaurs were endothermic: warm blooded dinosaur facts: we don’t know the color of most dinosaurs. Pigments composed of proteins called-melanosomes anchioronis ( tiny troodontid was the only one known for sure and it was gray,wing and tail feathers with braod black and white stripes, and a red crested head- looked like woodpecker) no evidence that they were aquatic animals there is new evidence that they were burrowers dinosaurs were found on every continent end of cretaceous period dinosaurs went extinct theories of how dinosaurs went extinct: volcanism altered the climate lowering in sea levels caused ecological changes six mile wide asteroid hit the gulf of mexico we have proof that birds lived in the age of dinosaurs. The animal was called archaeopteryx
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