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Lecture 12 chapter 8
Sauropoda The Giants
•Saurishchian dinosaurs had a ?
•Lizard hip pelvis Saurischia
•Sauropods were very large and very small
Different Pelvis structure. pubis is going forward
•Who was it names by?
•H.G seeley in 1887
•What about Saurischia size?
•The most agile and the most ponderous
•What are the Features of Saurischia ?
•What is subanrial foramen?
•opening beneath the nostril area
•What is the cause of the long neck?
•Elongation of the rearward neck vertebrae
•Increased articulation between vertebrae
•Large thumb supported by a broad metacarpal bone
•Wedge shaped splint of bone on the astragalus
•Giants among dinosaurs
•Sauropods weighted up to?
•Sauropods length was up to?
•What was the height up the the shoulder?
•Survival over 160 million year
Animals that big test processes such as:
Weight support: they got really big and had to support their weight
respiration::oxygen needed to be a lot
Digestion: they did not have dental batteries, they eat a lot,
Occurrence : Global distribution
•Since late triassic
•South America: Patagonia, desert like conditions, mountains shane biggest
•basal group of saurapods are the prosauropods
•Their relationship to sauropods is debated
•Presaupoda late triassic to early jurassic
•Relative short limbs
•Well developed thumb claw
•herbivore and possible carnivore
•bonebeds suggest herd living
Middle and Early Jurassic
•Reefting Tesyan Sea
•no interchange dinosaurs
Over 100 spcies of Sauropods
•Plateosaurus ( germany )
•Marsh and Cope discovered:
•Diplodocus long tail.
•20 Century Discoveries
•not from canada they fed but they migrated north not stay lived in warmer
Finding in Africa
•tengaguru Hills in Tanzania
•major expedition by E. Fraas and Werner Janensch
•500 local workers
Size of Expedition
•225000 man days
•Over 100 articulated skeletons
•Hundreds of isolated bones
•4300 jackets to be carried to port city
•5400 walks, each one four days
•Alamosaurus- New Mexico- Late Cretaceous
•South America- Early to late triassic- part of the Gondwana fauna
•1935 : 3 new taxa from the upper jurassic Morrison formation
•Found by DD Gilette
•Length 39-50 m
•One of the largest animals ever to walk on earth
•skull is always missing