Lab 7 Maniraptors

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Anthropology

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Jan 9, 2024

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Name_______________________________________ Section___________________ Earth 7: Dinosaurs LAB 7 – Maniraptors, Including Modern Dinosaurs Our final lab focuses on the Maniraptors – a group that includes living birds .

(From cladogram 1)

1. a. Here are several specimens of Velociraptor (a dromaeosaurid) , including a half-size skeleton model and a full-size cast of its skull. Sketch a bone that illustrates an evolutionary novelty of maniraptors, and label what feature it illustrates. Include a scale bar , and multiply by two if you draw something on the half-size model. (5 pts) b. Notice that much of the body length is made up by the extremely stiff tail. What is the benefit of having such a stiff tail? (2 pts) c. Close relatives of Velociraptor had complex feathers, and there’s evidence of feathers on Velociraptor , as well. Was Velociraptor capable of powered flight? If so, how do you know? If not, what might the feathers have been used for? (3 pts) 2. a. Notice the large crest above this skull’s nasal passages (nostrils). Name one example of a group of dinosaurs that convergently evolved head ornamentation or large nasal passages. (What dinosaurs had crazy head decorations?) (2 pts) b. This skull is from Oviraptor . Is Oviraptor or Velociraptor (a dromaeosaurid) more closely related to living birds? (2 pts) c. What feature can you see in Oviraptor that has evolved convergently with birds? (2 pts)

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