click below
click below
Normal Size Small Size show me how
Lecture 15 wrld dnsr
Carnivores Big and Small
Question | Answer |
---|---|
Which groups are in the saurischian group? | sauropodomorphs and therapods |
When did the earliest dinosaur exist? | Late Triassic -230 million years ago |
Where was this dinosaur found? | Ischigualasto Formation in Argentina |
Name two therapod dinosaurs: | Eoraptor, Herrerasaurus |
What are some therapod characteristics? | 1. bipedal (body is held horizontally to the ground), 2. claws (reduced the outside finger),3. 3 digitigrade toes (outside was reduced), 4.serrated teeth, 5.pneumatic bones (air-filled), 6. sensory (smell, vision, brain size) |
How would therapods fight and what would they use as weapons? | They slashed with their feet, arms and claws. Teeth! |
How did therapods walk? | Bipedal, digitigrade |
What finger was usually reduced? | outside fingers |
What kind of teeth did therapods possess? | Serrated |
Definition of pneumatic bones | Bones filled with airsacs |