Evolutionary Classification

Evolutionary Classification vs Linnaen Classification

1. Modern Evolutionary Classification

2. Learning Objectives
Explain the difference between evolutionary classification
and Linnaean classification.
Describe how to make and interpret a cladogram.
Explain the use of DNA sequences in classification.

3. Evolutionary Classification
Dinosauria
Ornithischia Saurischia Aves
CrocodilesOrnithischiansSauropodsT. rex Archaeopteryx Modern
birds

4. Cladograms
1 2
3

5. Derived Characters
Hair
Four limbs
Retractable claws
Specialized shearing teeth

6. Interpreting a Cladogram
Clade
Tetrapoda
Clade
Amniota
Clade
Mammalia
Clade
Carnivora
Clade
Felidae
Amphibians
Reptiles
Marsupials
Dogs/Relatives
Cats
Four
limbs
Retractable
claws
Amniotic
egg
Hair
Specialized
shearing teeth

7. Clades and Traditional Taxonomic Groups

8. DNA in Classification
Hooded
vulture
American
vulture
Stork

9. Classification of Pandas
Raccoon Red panda Giant panda Bear

10. Constructing a Cladogram
Derived Characters in Organisms
Organism Derived Character
Backbone Legs Hair
Earthworm Absent Absent Absent
Trout Present Absent Absent
Lizard Present Present Absent
Human Present Present Present