同为海百合纲的海羽星是一种高度灵活的海星形式。
This species, also known as crinoids, is a highly mobile form of sea star.
因为其前后肢上都存在着较长的羽翮，因此徐星将它称之为“四翼”恐龙。
Xu calls it a "four-winged" dinosaur because it had long, pennaceous feathers on its arms and legs.
因为其前后肢上都存在着较长的羽翮，因此徐星将它称之为“四翼”恐龙。
Xu calls it a "four-winged" dinosaur because it had long, pennaceous feathers on its arms and legs.
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