You Excavate a Fossil of a Small Reptile During a Paleontology

question 4

Multiple Choice

You excavate a fossil of a small reptile during a paleontology field trip.It has the following characteristics: skull with a pair of dorsal temporal openings and a pair of lateral temporal openings; bipedal with legs positioned directly under the pelvic girdle.Dating with radioisotopes shows that the specimen lived 100 million year ago (MYA) .You conclude that the specimen belongs to which reptilian group (be specific as possible) ?

• A)anapsid
• B)synapsid
• C)diapsid
• D)archosaur
• E)dinosaur

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