The Cave Bear and the American Giant Short-faced Bear are both extinct. All the other species are extant. Plio = Pliocene, Plei = Pleistocene, and Hol = Holocene. Figure 1: t₁ MP-MLU-MLp-Bayesian 14.32 t. 1977-16581 node 95% CI 35.7 mean age (Ma) Epochs Eocene Oligocene 100-100-100-1.00 12.86 19.09 ta (14.38-24.79) t [9.77-16.58] Miocene 100-100-100-1.00 5.39 85-93-93-1.00 5.05 100-100-100-1.00 0.88 t10.66-1.17] ta 14.2-6.861 2.75 polar bear to 12.1-3.57) ts 13.9-6.481 99-97-94-1.00 to 4.08 t10 76-94-97-1.00 4.58 100-100-100-1.00 5.66 (3.11-5.27) ta (3.51-5.89) -sloth bear (4.26-7.34) -brown bear 100-100-100-1.00 Plio Plei -cave bear -Asian black bear American black bear -sun bear -American gian short-faced be -spectacled bear -giant panda -harbor seal Global expansion of C4 biomass Major temperature drop and increasing seasonality Faunal turnover Hol
The Cave Bear and the American Giant Short-faced Bear are both extinct. All the other species are extant. Plio = Pliocene, Plei = Pleistocene, and Hol = Holocene. Figure 1: t₁ MP-MLU-MLp-Bayesian 14.32 t. 1977-16581 node 95% CI 35.7 mean age (Ma) Epochs Eocene Oligocene 100-100-100-1.00 12.86 19.09 ta (14.38-24.79) t [9.77-16.58] Miocene 100-100-100-1.00 5.39 85-93-93-1.00 5.05 100-100-100-1.00 0.88 t10.66-1.17] ta 14.2-6.861 2.75 polar bear to 12.1-3.57) ts 13.9-6.481 99-97-94-1.00 to 4.08 t10 76-94-97-1.00 4.58 100-100-100-1.00 5.66 (3.11-5.27) ta (3.51-5.89) -sloth bear (4.26-7.34) -brown bear 100-100-100-1.00 Plio Plei -cave bear -Asian black bear American black bear -sun bear -American gian short-faced be -spectacled bear -giant panda -harbor seal Global expansion of C4 biomass Major temperature drop and increasing seasonality Faunal turnover Hol
Chapter18: Life's Origin And Early Evolution
Section: Chapter Questions
Problem 15SA: Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent: ___1...
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a) Is Figure 1 a cladogram, phylogram, or chronogram?
b) According to Figure 1, all bears share a common ancestor with what group of mammals?
c) What pair of bear species diverged most recently?
d) The ancestor of what species of bear diverged the earliest from the ancestor of all other bears?
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