premaxillary 中文意思是什麼
premaxillary
解釋
前頜骨-
It shows many typical characters seen in the type species of the genus of sinornithosaurus, which discovered also from western liaoning. ngmc 00 - 12 - a can further be included in sinornithosaurus by the dentary bifurcated posteriorly, unserrated premaxillary teeth, u - shaped furcula, extremel y short manual phalanx iii - 2 in comparison with the length of phalanx iii - l, very large and developed obturator process of the ischium, partially arctometatarsalian metatarsal iii and so on
它具有許多中國鳥龍屬sinornithosaurus所特有的特徵，如：齒骨後部分叉、前頜骨齒齒冠前後緣均無小鋸齒、叉骨u形、第指第2指節很短、坐骨封閉突極大且具有坐骨後背突、第?骨部分窄足型等，因而無疑應歸入該屬中。
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