陆栖动物据信由海栖动物进化而来。
Land animals are believed to have developed from sea animals.
早、中侏罗世低位体系域不发育，由海进体系域与高位体系域两部分组成。
Lowstand System Tracts of Early and Metaphse Jurassic Period was undergrown, of which Transgressive Systems Tract and Highstand Systems Tract made up.
层序I，由海槽西北部陆坡可以连续追踪至海槽区域，为全新世松软沉积物。
Sequence I can be distinguished from the northwest slope to trough basin and is Holocene softy sediments.
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