Draw a phylogency using short story

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Draw a phylogency using this short story: Approximately 170 MYA, a group of animals split into two groups. One of those groups, "Ov" was a monophyletic group that went extinct about 66 MYA. The other group split into two groups, "B" and "A"; this happened before 66 MYA. The "A" group evolved into a monophyletic group that went extinct about 66 MYA. The "B" group is a monophyletic group still in existence.

The ancestor of all these groups had short arms and teeth. Groups A and B have (or had) long arms; group Ov has short arms. Group B is toothless; groups A and Ov have teeth.

Reference no: EM132698210

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