GEL 12 Lecture Notes - Lecture 9: Ornithomimus, Ornithomimosauria, Gallimimus
1. What are theropods?
a. Theropoda: Beast Leg
i. Only group that contains carnivores
ii. Allosaurus: one of the most common representations of theropods, 10m
iii. Late Triassic, maintained in Jurassic, gave rise to even more species in
Cretaceous
1. Group with the largest number of species
2. What features would a basic theropod have?
a. Obligate Bipedalism
b. Serrated, laterally compressed teeth
i. Good for cutting meat
ii. Exceptions: Ornithomimus
c. Active forelimbs
i. Hands much better designed to do things
ii. Exceptions: T. Rex
d. Subduing feet
i. Grab on to the prey
ii. Pin them to the ground
3. What are the major groups of theropods?
a. Tetanurae: stiff tail
i. stiffened tail joints
ii. Fins on posterior process
iii. Carnosauria: Allosaurus plus its kin
b. Coelurosauria: hollow-tail-lizard
i. includes tyranisaurus
c. Maniraptora: hand thief
i. tiny head
ii. 6-7 m
iii. Gallimimus
iv. Ornithomimus: ostrih diosaurs, ird ii
v. Semi-lunate Carpal
1. move their hands around
vi. Oviraptosauria
1. Ovi-raptor: egg thief
vii. Citipati: ig o
d. Paraves: similar-to-bird
i. Scansoriopterygidae
ii. Epidexipteryx
iii. Wings that are not wings
1. Could not fly
iv. Deinonychus
v. Velociraptor
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