Carpolestes simpsoni does the hallux big toe of

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Chapter 1 / Exercise 013
Biology
Martin/Solomon
Expert Verified
Carpolestes simpsoni. Does the hallux (big toe) of Carpolesteshave symplesiomorphic features shared with the tree shrew, or synapomorphic features shared with the euprimate? List at least one feature you considered. 3. Based on the features you considered in the previous two questions, why are plesiadapiforms unlikely to be direct ancestors of modern primates? (Hint:recall the bias in how dental formulae change through time described in the introduction.) What can plesiadapiforms potentially tell us about a defining primate adaptation in the last common ancestor of all euprimates?Station 3: Euprimates of the Early Eocene (2 pts.) The Eocene epoch (56-34 mya) began with a massive burst of adaptive radiation for the earliest well-defined primates (nearly 60 genera—this is four times greater than modern strepsirrhine diversity). Two extinct families, the Adapidae and Omomyidae, group these earliest euprimates. The adapids are thought to be ancestral to present day lemurs, lorises, and galagos, whereas the omomyids are most likely ancestral to tarsiers and anthropoids. Many species of adapids and omomyids were sympatric(lived in the same place and time) and have been found throughout North America and Europe. Compare the adapid skull cast with the lemur and tarsier skulls. Use these skulls to answer the questions on the following page (NOTE:the adapid cast is poorly molded and falsely shows post-orbital closure):
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Biology
The document you are viewing contains questions related to this textbook.
Chapter 1 / Exercise 013
Biology
Martin/Solomon
Expert Verified
4 1. List two traits the adapidand the lemurshare. A. __________________________________________ B. __________________________________________ 2. List two differences between the adapidand the tarsierskulls. (Do not use the absolute overall size as a difference. Relative sizes of features on the skulls are more useful. Additionally, please do notlist the sagittal crest as a difference.) A. __________________________________________ B. __________________________________________ Station 4: Early Anthropoids (2 pts.) The second half of the Eocene and beginning of the Oligocene epochs, between ~43-33 mya, is marked by a great deal of geologic and climatic change. During this time the first anthropoids (monkeys and apes) appear in the fossil record, and seem to have quickly diversified into the platyrrhines and catarrhines by around 40 mya. This early anthropoid diversification is well-documented in the Fayum Depression of Egypt. Examine the dental casts of Aegyptopithecus (a propliopithecid primate) and Parapithecus parapithecid primate). Compare them with the modern capuchin (platyrrhine) and macaque (catarrhine) skulls in order to answer the following questions: 1. From the fossil evidence, is Aegyptopithecusa platyrrhine or a catarrhine? List one synapomorphy that supports your answer. 2. Is the dental formula of Parapithecusapomorphic (derived) or plesiomorphic (primitive)? What is the relevance of finding an anthropoid with this dental formula in Egypt? (Hint:think about where anthropoids with this dental formula live today.) 3. Based on your answers to the previous two questions, which of these fossil anthropoids do you think is from earlier in the fossil record? (a
5 Homework: Primate Behavior (3 pts.) An important component of biological anthropology is studying the behavior of non-human primates. However, this is difficult to accomplish in the lab. This exercise is designed to allow all

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