In the phylogeny below, indicate where the hydrostatic skeleton, exoskeleton and endoskeleton were first seen in that lineage.
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Question

In the phylogeny below, indicate where the hydrostatic skeleton, exoskeleton and endoskeleton were first seen in that lineage.

Answer

Hydrostatic skeleton = 1, exoskeleton = 2, endoskeleton = 3.

Answer

Hydrostatic skeleton = 2, exoskeleton = 3, endoskeleton = 1.

Answer

Hydrostatic skeleton = 1, exoskeleton = 3, endoskeleton = 2.

Answer

Hydrostatic skeleton = 3, exoskeleton = 1, endoskeleton = 2.

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