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Cladogram

Cladogram. More complex. Family tree that branches systematically at points (nodes) representing specific traits possessed by some groups, but not others. Organisms branching to right HAVE this trait. Recent/ derived traits. Organisms branching to left DO NOT have this trait.

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Cladogram

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  1. Cladogram More complex Family tree that branches systematically at points (nodes) representing specific traits possessed by some groups, but not others. Organisms branching to right HAVE this trait. Recent/ derived traits Organisms branching to left DO NOT have this trait. Node: Specific trait. Primitive traits Less complex

  2. Vertebrate Cladogram BIRDS MAMMALS Oldest: Archaeoptryx (150 mya) C. Oldest: Theraspids Endothermy Classes: REPTILES B. A. Mammary glands 250 mya AMPHIBIANS 300 mya FISH Amniotic egg 350 mya 4 limbs DINOSAURS: 230 mya Vertebrata A. Ecothermic (and no feathers, other reptile anatomy) 550 mya Backbone, brain case Dorsal nerve chord B. Semi-endothermic C. Endothermic (and feathers, other bird anatomy) Phylum: Chordata

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