VERTEBRATES

Litty Carter
Mind Map by , created over 6 years ago

Vertebrate Zoology (Hemichordates & Chordates) Mind Map on VERTEBRATES, created by Litty Carter on 04/23/2013.

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Litty Carter
Created by Litty Carter over 6 years ago
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VERTEBRATES
1 Cambrian era
1.1 Cranium, brain, paired eyes, vertebral column
1.1.1 Cartilage and bone. Duplicate Hox gene complex
1.1.2 Neural Crest
2 Key Evolutionary Steps
2.1 1. HEAD: Craniates, complex movement and feeding
2.1.1 2. VERTEBRAL COLUMN: support
2.1.1.1 3. JAWS: predatory life
2.1.1.1.1 4. BONE: replaces cartilage support
2.1.1.1.1.1 5. LUNGS: Breathing air
2.1.1.1.1.1.1 6. LEGS: move on land
2.1.1.1.1.1.1.1 7. AMNIOTIC EGG: reproduce out of water
2.1.1.1.1.1.1.1.1 8. INSULATION: feathers/fur
2.1.1.1.1.1.1.1.1.1 9. MILK: suckling young
3 EXTANT GROUPS
3.1 Myxinoidea
3.1.1 Hagfish
3.2 Petromyzontia
3.2.1 Lampreys
3.3 Chondrichthes/Elasmobranchii
3.3.1 Cartilaginous fish
3.4 Osteichthyes
3.4.1 Bony fish
3.5 Amphibia
3.5.1 Frogs, toads, newts, salamanders
3.6 Reptilia
3.6.1 Crocodilians, snakes, dinosaurs
3.7 Aves
3.7.1 Birds
3.8 Mammalia
3.8.1 Mammals

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