08-0415 LECTURE.pdf
08-0415 LECTURE.pdf
08-0415 LECTURE.pdf
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CLADE<br />
CHORDATA<br />
Assorted jawless fish<br />
Urochordata &<br />
Cephalochordata<br />
Synapsids<br />
‘Amphibians’<br />
Most ‘fishes’<br />
1<br />
Pterosauria<br />
Archaic archosaurs &<br />
crocodiles<br />
Lepidosaurs<br />
Anapsids<br />
6<br />
5<br />
11<br />
AMNIOTA<br />
4 TETRAPODA<br />
3 GNATHOSTOMATA<br />
2 VERTEBRATA<br />
CHORDATA<br />
10<br />
ORNITHODIRA<br />
9<br />
ARCHOSAURIA<br />
8 DIAPSIDA<br />
7 REPTILIA<br />
Dinosauria<br />
SHARED, DERIVED CHARACTERS OF THE DINOSAURIA<br />
sacrum with 3 or more fused vertebrae<br />
reduced toes, weight on middle toe<br />
Foot postures<br />
pubis<br />
ilium<br />
12<br />
perforate<br />
hip socket<br />
ischium<br />
Astragalus<br />
fused to tibia<br />
4
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