According to a number of paleoanthropologists, the fossils assigned to the species Homo habilis actually belong to two different species. Please name these two species.
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- Why would you expect a hybrid of Neanderthals and modern humans to have intermediate features?Where would the derived traits of the body types of both H. neanderthalensis and H. florensis be placed on this cladogram?Describe a reason for the hypothesis that the ancestor of eleuthero-zoan groups was a radial, sessile organism.
- According to the fossil record, which of these species is the earliest of the Homo genus? a. H. sapiens d. H. heidelbergensis b. H. erectus e. H. ergaster c. H. habilisThe Manx cat is in the domestic cat group, and the bobcat is in the lynx group. Both have a trait in common: short, stubby tails. According to the phylogeny, which is the most parsimonious explanation for this common trait in these two species of cat?Fossil A found closer to the surface compared to Fossil B. Which of the following conclusions can be made based on this statement?
- Homo heidelbergensis is considered by many to be a transitional species between Homo ergaster and Homo neanderthalensis. Use the following two models to help you answer the questions below. a. Name one Homo ergaster trait observable in this fossil.b. Name one Homo neanderthalensis trait observable in this fossil.Paleoanthropologists generally agree that Homo erectus belongs in our genus and represents a significant shift towards adaptations important to our own species. However, there is much variation among specimens that are grouped into H. erectus. Your instructor will let you know which of these fossil representatives to use for the exercise today.Based on your measurements and comparisons in the table above, what are major differences among Au. africanus, H. habilis, and H. erectus? Do you think H. habilis is more like Australopithecus or Homo? How do these three species reflect the major environmental pressures of the time periods in which they lived, respectively? List three features that are changing in the genus Homo due to these selective pressures. List three features found in H. erectus that are derived, compared to Au. africanus.Dolphins and fish have similar body shapes. Is this feature more likely a homologous or analogous trait?
- What specific evidence do paleoanthropologists cite to support the arguments that Neanderthals had a tendency to inbreed (extreme endogamy)? What are the speculated reasons for this practice?Distinguish among the following members of genus Homo: H. habilis, H. ergaster, H. erectus, H. antecessor, H. heidelbergensis, H. neanderthalensis, and H. sapiens.Which of the following is responsible for the early predominant image of Neanderthals as brutish cavemen? a). They had small brain cases with stocky bodies and were always recovered from cave sites b). The fossil evidence reveals that they had little cognitive capacity and had a hunched over posture c). An early fossil find of an Individual suffering from arthritis was assembled and taken as the type specimen foer all Neanderthals, mistakenly giving the idea that Neanderthals were an ape-like, hunched-over species.d). None of the above are true