(not to scale) 0 Pleist. Pliocene Miocene Oligocene Eocene 1.8 5.3 Late 11.6 Middle 15.9 Early 23.0- Late 28.0- Early 34.0- Late 38.0- Middle 48.6 Early 55.8 Georgiacetus Zygorhiza 99(9) 100(35) macrophagy (teeth only) 1) bulk filter- feeding (teeth/baleen) 57(2)◄ 76(4) (1) broad-based rostrum bulk filter-feeding (baleen only) 100(13) 92(5) 63(4) 94(8) large body size Ledentulous rostrum baleen elongated and flattened rostrum small body size foreshortened rostrum fibrocartilaginous mandibular symphysis Figure 1. The phylogenetic tree of the Mysticeti. 54(3) Question 4. Discuss some of the aspects of whale feeding ecology that are revealed in their skull morphology. For instance, what features of the skull are associated with macrophagy (feeding on large prey)? What features of the skull reflect adaptations for filter feeding?

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Paleontology

A branch of science concerning the scientific study of life from ancient times is known as paleontology. The scientists working on paleontology are known as paleontologists. Paleontologists collect the fossils of organisms from ancient times to classify them. The paleontologists also study the environment from ancient times to study the interactions between different organisms.