Segmentation and Vertebrate Origins

by Cliff Lundberg

• Introduction
• Segmentation
• Ideal Serial Homology
• Parabiosis
• Vertebrate and Arthropod Progenitors: Their Form and Origin contains figure 1 and figure 2
• The Vertebrate Skull
• The Origin of the Axial Skeleton contains figure 3
• The Formation of the Appendicular Skeleton contains figure 4
• Ontogeny and Phylogeny
• Verification
• Irreversibility
• Incipience and Preadaptation
• Specialization and Evolution
• Stripes and Evolution contains figure 5
• Vestigial Segmentation in the Skin
• The Fossil Evidence of Vertebrate Origins
• Traditional Ideas about Vertebrate Progenitors contains figure 6
• Conclusion
• Literature Cited
• Glossary