1. ANATOMICAL PROOF OF EVOLUTION
AND FOSSILS
Pedro Tamames, Juan Torre y Diego Rodríguez

2. There are 2 ways of analysing
evolution
• Fossils
– Early discoveries
– Indication of interactions
– Clues at cellular level
• Anatomical Observation
– Analogous structures
– Homologous structures
– Vestigial structures

3. Early discoveries
Nicolas Steno (1638-1686)

4. Indication of interactions

5. Clues at cellular level

6. Analogous Structures

7. Homologous Structures

8. Vestigial Structures
When you have appendicitis the surgeon can take off the
appendix as it doesn’t have any apparent use

9. THE END.