| THE ORIGIN OF TETRAPODS-PAST ANDPRESENT HYPOTHESES |
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| 作者姓名： | Hans-Peter Schultze |
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| 作者单位： | Institut fur Palaonitologie，Museum fur Naturkunde，Invalidenstr. 43，D-10115 Berlin，Germany |
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| 摘 要： | HistoricalreviewoneshouldexpectthatanewtheorychangesorimprovestheunderstandingofPhylogeneticquestions.ThatdoesnotseemtobetrueoftheoriginoftetrapodsasRosenetal.(l98l)havealreadyshowninthecaseoftheapPearanceofDarwin's'ontheoriginofsPecies"inl859.Incontrast,thehistoryofthedevelopmentofhypothesesontheoriginoftetrapodsdemonstratesthatdiscoveryofnewextantorfos-silforms(Tab.l)shapesourunderstandingoftherelationshipoftetrapodstofishes.Thefrstextantlungfishwasdiscoveredinl836inSouthAmerica(Fitzinge…
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THE ORIGIN OF TETRAPODS-PAST AND PRESENT HYPOTHESES |
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| Hans-Peter Schultze.THE ORIGIN OF TETRAPODS-PAST ANDPRESENT HYPOTHESES[J].Vertebrata Palasiatica,1995(4). |
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| Authors: | Hans-Peter Schultze |
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| Abstract: | Discoveries of new extant or fossil forms have historically changed the hypotheses of relationship of tetrapods, not the appearance of new theories. At present a sister group relationship between tetrapods and elpistostegids and that of these two groups to osteolepiforms is accepted. A comparison of recent hypotheses on the interrelahonships of sarcopterygians demonstrates that three hypotheses of the relationship of lungfishes to different sarcopterygians except close to tetrapods nearly have the same probability. New basal sarcopterygians with new characters or new interpretations of the polarization of character states may solve the placement of lungfishes. |
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| Keywords: | Lungfishes Osteolepiformes Tetrapoda Phylogeny |
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