نتایج جستجو برای: ctenophora
تعداد نتایج: 318 فیلتر نتایج به سال:
The process of gastrulation [6] allows for the formation of the germ layers [7] in metazoan embryos, and is generally achieved through a series of complex and coordinated cellular movements. The process of gastrulation [6] can be either diploblastic or triploblastic. In diploblastic organisms like cnidaria or ctenophora, only the endoderm [8] and the ectoderm [9] form; in triploblastic organism...
The Early Cambrian (approximately 540 million years old) Meishucun fossil assemblage of Ningqiang County (Shaanxi Province), China, contains the oldest complex skeletonized organisms known in the geological record. We here report the finding in this assemblage of an exquisitely preserved late-stage embryo of a ctenophore ("comb jelly"), its fine structure documented by confocal laser scanning m...
The process of gastrulation [6] allows for the formation of the germ layers [7] in metazoan embryos, and is generally achieved through a series of complex and coordinated cellular movements. The process of gastrulation [6] can be either diploblastic or triploblastic. In diploblastic organisms like cnidaria or ctenophora, only the endoderm [8] and the ectoderm [9] form; in triploblastic organism...
We numerically investigate the hydrodynamic interaction of swimming organisms at small to intermediate Reynolds number regimes, i.e., Re∼O(0.1-100), where inertial effects are important. The hydrodynamic interaction of swimming organisms in this regime is significantly different from the Stokes regime for microorganisms, as well as the high Reynolds number flows for fish and birds, which involv...
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