Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Evolution_of_cetaceans> ?p ?o }
- Evolution_of_cetaceans abstract "The evolutionary history of cetaceans is thought to have occurred in India from even-toed ungulates 50 million years ago, over a period of at least 15 million years, however a jawbone discovered in Antarctica may reduce this to 5 million years. Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses. Being mammals, they surface to breathe air, they have bones in their fins, they nurse their young, and their skeletal anatomy is more similar to terrestrial mammals than to fish. These mammalian characteristics all point to their terrestrial origin, as well as the fact that they are mammals. Discoveries starting in the late 1970s in Pakistan revealed several stages in the transition of cetaceans from land to sea.The two modern parvorders of cetaceans – Mysticeti (baleen whales) and Odontoceti (toothed whales) – are thought to have separated from each other, and the archaeocetes, around 34 million years ago in a second cetacean radiation, the first belonging to the archaeocetes. The adaptation of echolocation in toothed whales distinguishes them from fully aquatic archaeocetes and early baleen whales. The presence of baleen in baleen whales occurred gradually, with earlier varieties like Janjucetus having very little baleen, and their size is linked to baleen dependence.Modern-day cetaceans' evolution is largely affected by their local culture and social network. Tool-use for foraging in certain societies affects their diet, and allows them to access more varieties of food. This behavior is passed down from mother-to-child, as in the bottlenose dolphins residing in Shark Bay, where many use sponges to protect their beak from sharp objects and stingray barbs while foraging. Social bonds between dolphins in a pod can effect overall fitness in a habitat, decreasing or increasing the survival chances for any particular individual in that pod, as with strong bonds between older and younger juvenile males (adversely affecting older individuals). Social bonds between different species can sometimes cause interbreeding, which, if any, causes infertile hybrids.".
- Evolution_of_cetaceans thumbnail Cetaceans.svg?width=300.
- Evolution_of_cetaceans wikiPageExternalLink Segment.aspx?irn=161.
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- Evolution_of_cetaceans wikiPageExternalLink Whales.htm.
- Evolution_of_cetaceans wikiPageExternalLink 48501.
- Evolution_of_cetaceans wikiPageExternalLink archaeoceti.htm.
- Evolution_of_cetaceans wikiPageExternalLink A1283186.
- Evolution_of_cetaceans wikiPageExternalLink 413277a0.html.
- Evolution_of_cetaceans wikiPageExternalLink gould_leviathan.html.
- Evolution_of_cetaceans wikiPageExternalLink did-whale-evolution-go-backwards.
- Evolution_of_cetaceans wikiPageID "875148".
- Evolution_of_cetaceans wikiPageLength "69508".
- Evolution_of_cetaceans wikiPageOutDegree "205".
- Evolution_of_cetaceans wikiPageRevisionID "708155975".
- Evolution_of_cetaceans wikiPageWikiLink Acrophyseter.
- Evolution_of_cetaceans wikiPageWikiLink Aetiocetus.
- Evolution_of_cetaceans wikiPageWikiLink Ambulocetus.
- Evolution_of_cetaceans wikiPageWikiLink Animal_echolocation.
- Evolution_of_cetaceans wikiPageWikiLink Anthracotheriidae.
- Evolution_of_cetaceans wikiPageWikiLink Apical_ectodermal_ridge.
- Evolution_of_cetaceans wikiPageWikiLink Aquatic_adaptation.
- Evolution_of_cetaceans wikiPageWikiLink Aquatic_locomotion.
- Evolution_of_cetaceans wikiPageWikiLink Aquatic_mammal.
- Evolution_of_cetaceans wikiPageWikiLink Archaeoceti.
- Evolution_of_cetaceans wikiPageWikiLink Atavism.
- Evolution_of_cetaceans wikiPageWikiLink Aulophyseter.
- Evolution_of_cetaceans wikiPageWikiLink Baiji.
- Evolution_of_cetaceans wikiPageWikiLink Baja_California_Peninsula.
- Evolution_of_cetaceans wikiPageWikiLink Baleen.
- Evolution_of_cetaceans wikiPageWikiLink Baleen_whale.
- Evolution_of_cetaceans wikiPageWikiLink Blowhole_(anatomy).
- Evolution_of_cetaceans wikiPageWikiLink Bone_morphogenetic_protein_7.
- Evolution_of_cetaceans wikiPageWikiLink Brygmophyseter.
- Evolution_of_cetaceans wikiPageWikiLink Calcium_phosphate.
- Evolution_of_cetaceans wikiPageWikiLink Carnivora.
- Evolution_of_cetaceans wikiPageWikiLink Carnivore.
- Evolution_of_cetaceans wikiPageWikiLink Category:Articles_containing_video_clips.
- Evolution_of_cetaceans wikiPageWikiLink Category:Cetaceans.
- Evolution_of_cetaceans wikiPageWikiLink Category:Evolution_of_mammals.
- Evolution_of_cetaceans wikiPageWikiLink Cervical_vertebrae.
- Evolution_of_cetaceans wikiPageWikiLink Cetacea.
- Evolution_of_cetaceans wikiPageWikiLink Cetotherium.
- Evolution_of_cetaceans wikiPageWikiLink Chevrotain.
- Evolution_of_cetaceans wikiPageWikiLink Chōshi.
- Evolution_of_cetaceans wikiPageWikiLink Clasper.
- Evolution_of_cetaceans wikiPageWikiLink Clymene_dolphin.
- Evolution_of_cetaceans wikiPageWikiLink Common_dolphin.
- Evolution_of_cetaceans wikiPageWikiLink Creodonta.
- Evolution_of_cetaceans wikiPageWikiLink Crocodile.
- Evolution_of_cetaceans wikiPageWikiLink Cuviers_beaked_whale.
- Evolution_of_cetaceans wikiPageWikiLink Deglaciation.
- Evolution_of_cetaceans wikiPageWikiLink Denebola_(genus).
- Evolution_of_cetaceans wikiPageWikiLink Digitigrade.
- Evolution_of_cetaceans wikiPageWikiLink Dorudon.
- Evolution_of_cetaceans wikiPageWikiLink Dorudontinae.
- Evolution_of_cetaceans wikiPageWikiLink Ear_canal.
- Evolution_of_cetaceans wikiPageWikiLink Eardrum.
- Evolution_of_cetaceans wikiPageWikiLink Eared_seal.
- Evolution_of_cetaceans wikiPageWikiLink Echolocation.
- Evolution_of_cetaceans wikiPageWikiLink Ectotympanic.
- Evolution_of_cetaceans wikiPageWikiLink Endotherm.
- Evolution_of_cetaceans wikiPageWikiLink Eocene.
- Evolution_of_cetaceans wikiPageWikiLink Even-toed_ungulate.
- Evolution_of_cetaceans wikiPageWikiLink Evolution_of_mammals.
- Evolution_of_cetaceans wikiPageWikiLink Evolution_of_sirenians.
- Evolution_of_cetaceans wikiPageWikiLink Evolutionary_history_of_life.
- Evolution_of_cetaceans wikiPageWikiLink Evolutionary_radiation.
- Evolution_of_cetaceans wikiPageWikiLink Facies.
- Evolution_of_cetaceans wikiPageWikiLink Fishing_trawler.
- Evolution_of_cetaceans wikiPageWikiLink Fluvial.
- Evolution_of_cetaceans wikiPageWikiLink Food_energy.
- Evolution_of_cetaceans wikiPageWikiLink Front_(oceanography).
- Evolution_of_cetaceans wikiPageWikiLink Genetic_divergence.
- Evolution_of_cetaceans wikiPageWikiLink Giant_beaked_whale.
- Evolution_of_cetaceans wikiPageWikiLink HAND2.
- Evolution_of_cetaceans wikiPageWikiLink Hippopotamus.
- Evolution_of_cetaceans wikiPageWikiLink Hybrid_speciation.
- Evolution_of_cetaceans wikiPageWikiLink Ice_age.
- Evolution_of_cetaceans wikiPageWikiLink Ilium_(bone).
- Evolution_of_cetaceans wikiPageWikiLink Incisor.
- Evolution_of_cetaceans wikiPageWikiLink Indian_subcontinent.
- Evolution_of_cetaceans wikiPageWikiLink Indo-Pacific_bottlenose_dolphin.
- Evolution_of_cetaceans wikiPageWikiLink Indohyus.
- Evolution_of_cetaceans wikiPageWikiLink Involucrum.
- Evolution_of_cetaceans wikiPageWikiLink Ischium.
- Evolution_of_cetaceans wikiPageWikiLink Isotopes_of_oxygen.
- Evolution_of_cetaceans wikiPageWikiLink Janjucetus.
- Evolution_of_cetaceans wikiPageWikiLink Kashmir.
- Evolution_of_cetaceans wikiPageWikiLink Kentriodon.
- Evolution_of_cetaceans wikiPageWikiLink Kutchicetus.
- Evolution_of_cetaceans wikiPageWikiLink List_of_extinct_cetaceans.
- Evolution_of_cetaceans wikiPageWikiLink Littoral_zone.
- Evolution_of_cetaceans wikiPageWikiLink Livyatan_melvillei.
- Evolution_of_cetaceans wikiPageWikiLink Magondou.
- Evolution_of_cetaceans wikiPageWikiLink Maiacetus.
- Evolution_of_cetaceans wikiPageWikiLink Mammalodontidae.
- Evolution_of_cetaceans wikiPageWikiLink Mandible.
- Evolution_of_cetaceans wikiPageWikiLink Mandibular_foramen.
- Evolution_of_cetaceans wikiPageWikiLink Marine_mammal.