diff --git a/amniota.md b/amniota.md
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+# Amniota
+
+- Member of the [[Tetrapodomorpha]]
+- [[Amniote egg]]
+
+## Taxonomy
+
+- [[Amniota]]
+  - [[Synapsids]]
+    - [[Therapsids]]
+      - [[Mammalia]]
+        - [[Monotremata]]
+        - [[Theria]]
+          - [[Marsupiala]]
+          - [[Eutheria]]
+            - [[Placentiala]]
+  - [[Diapsids]] (Reptiliomorpha)
+    - [[Neodiapsida]]
+      - [[Lepidosauria]]
+        - [[Squamata]]
+        - [[Tuataras]]
+      - [[Icthyosauria]]
+      - [[Plesiosauria]]
+    - [[Archosauria]]
+      - [[Pterosauria]]
+      - [[Dinosauria]]
+        - [[Ornithischia]]
+          - [[Stegosauria]]
+        - [[Saurischia]]
+          - [[Sauropodomorpha]]
+          - [[Therapods]]
+            - [[Allosauridae]]
+            - [[Aves]]
+      - [[Crocodilomorpha]]
+      - [[Anapsida]]
+        - [[Chelonia]]
diff --git a/chordata.md b/chordata.md
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+# Chordata
+
+- Member of the [[Deuterostomia]]
+- Most basal branch: [[Cephalochordata]]
+  - Barely has a central nervous system
+  - 5 synapomorphies
+    - notochord
+    - dorsal hollow nerve cord
+    - endostyle
+    - pharyngeal slits
+    - post-anal tail
+  - [[Invertebrate]]
+- Main branch
+  - [[Urochordata]]
+  - [[Vertebrata]]
+- First Chordates appeared in the [[Cambrian]]
+
+## Taxonomy
+
+- [[Chordata]]
+  - [[Cephalochordata]]
+  - [[Olfactores]]
+    - [[Urochordata]]
+    - [[Vertebrata]]
+      - Jawless Fishes
+        - Hagfishes
+        - Lampreys
+      - [[Gnathostomata]]
diff --git a/endothermy.md b/endothermy.md
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+# Endothermy
+
+- Present in [[Mammalia]] and [[Aves]]
diff --git a/gnathostomata.md b/gnathostomata.md
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+# Gnathostomata
+
+- Member of the [[Vertebrata]] in the [[Chordata]]
+- Allowed animals to much more easily be predators
+  - Jaws could be used to immobilize prey
+  - Once you become predatory, the fitness space becomes much more steep
+    - Your fitness highly depends on your sight and agility
+- First Gnathostomes appeared in the [[Silurian]]
+
+## Taxonomy
+
+- [[Gnathostomata]]
+  - [[Placodermi]]
+  - [[Eugnathostomata]]
+    - [[Chondrichthyes]]
+    - [[Osteichthyes]]
diff --git a/osteichthyes.md b/osteichthyes.md
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+# Osteichthyes
+
+- Member of the [[Gnathostomata]] in the [[Vertebrata]]
+- True bone
+- Had swim bladders
+  - [[fresh-water|Fresh water]] has a lower buoyant density than
+    [[sea-water|sea water]]
+  - Needed some way to offset the weight of the bone structures
+
+## Taxonomy
+
+- [[Osteichthyes]]
+  - [[Actinopterygii]]
+  - [[Sarcopterygii]]
+    - [[Tetrapodomorpha]]
diff --git a/tetrapodomorpha.md b/tetrapodomorpha.md
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+# Tetrapodomorpha
+
+- Member of the [[Sarcopterygii]] in the [[Osteichthyes]]
+- The [[Vertebrata]] which made a transition onto dry land
+  - Due to the cooler and dryer Earth during the [[Carboniferous]], it was hard
+    to stay in freshwater lakes
+  - Developed the [[Amniote egg]]
+
+## Taxonomy
+
+- [[Tetrapodomorpha]]
+  - Modern Amphibians
+  - [[Amniota]]
diff --git a/vertebrata.md b/vertebrata.md
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+# Vertebrata
+
+- Member of the [[Chordata]]
+- Replaces the notochord with a spine
+- "New head"
+  - Neural crest cells
+- Transition to dry land started during the [[Devonian]]
+
+## Taxonomy
+
+- [[Vertebrata]]
+  - Jawless Fishes
+    - Hagfishes
+    - Lampreys
+  - [[Gnathostomata]]