Lecture12-chapter8Sauropodomorpha F7ab.doc

31 views6 pages

For unlimited access to Class Notes, a Class+ subscription is required.

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
saurischia
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 ?
Subanrial foramen
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
Lizard-type hip
Sauropodomorpha “lizardfootform”
Giants among dinosaurs
Sauropods weighted up to?
75,000 kg
Sauropods length was up to?
40 m
What was the height up the the shoulder?
6 m
Survival over 160 million year
Animals that big test processes such as:
Weight support: they got really big and had to support their weight
neural circuitry
respiration::oxygen needed to be a lot
Digestion: they did not have dental batteries, they eat a lot,
Occurrence : Global distribution
Since late triassic
North America
Asia
Europe
Africa
South America: Patagonia, desert like conditions, mountains shane biggest
dinosaurs found.
Phylogeny
basal group of saurapods are the prosauropods
Their relationship to sauropods is debated
Presaupoda late triassic to early jurassic
Relative short limbs
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 6 pages and 3 million more documents.

Already have an account? Log in
Plateosaurus
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
thecodontosaurus
Plateosaurus ( germany )
Marsh and Cope discovered:
Camarasaurus
Apatosaurus
Diplodocus long tail.
20 Century Discoveries
Utah
Wyoming
Colorado
not from canada they fed but they migrated north not stay lived in warmer
latitude
Finding in Africa
tengaguru Hills in Tanzania
major expedition by E. Fraas and Werner Janensch
1907
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
Other findings
Alamosaurus- New Mexico- Late Cretaceous
South America- Early to late triassic- part of the Gondwana fauna
Mongolia
India
Recent findings
1935 : 3 new taxa from the upper jurassic Morrison formation
Supersaurus
Ultrasaurus
Dystylosaurus
Seismosaurus
Found by DD Gilette
Morrison Formation
Length 39-50 m
One of the largest animals ever to walk on earth
skull is always missing
Sauropoda
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 6 pages and 3 million more documents.

Already have an account? Log in

Get access

Grade+
$10 USD/m
Billed $120 USD annually
Homework Help
Class Notes
Textbook Notes
40 Verified Answers
Study Guides
1 Booster Class
Class+
$8 USD/m
Billed $96 USD annually
Homework Help
Class Notes
Textbook Notes
30 Verified Answers
Study Guides
1 Booster Class