将独立的「鸟纲」置于「恐龙总目 兽脚亚目」的分类下是否合理?以及翼龙与鸟类存在演化上的关系吗? 知乎 Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: zhihu.com






Try and sketch some of theseSombrero, Gumball machine, Chamber pot, Elephant, Hourglass, Campers, Snake, Flowerbed, Cake, Cheapskate, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #2431 face :D


anonymous
anonymous
sketch #3064


anonymous
anonymous
sketch #5064


anonymous
anonymous
sketch #1114 fire flame camping bonfire


anonymous
anonymous
sketch #68509


Szabó Zoltán
sketch #2828 One Direction Szabó Zoltán


anonymous
anonymous
sketch #5101


Rachel Roe
sketch #141 Sunset


anonymous
anonymous
sketch #1953 愛鼠繪


anonymous
anonymous
sketch #4653 Kero by Indike Liyanage


anonymous
anonymous
sketch #5160 Marilyn Monroe by Muhammet Karadoğan


anonymous
anonymous
sketch #5093 Pedro Henrique Jordan Coquet


anonymous
anonymous
sketch #5155


anonymous
anonymous
sketch #5214 Crying with a Smile by Bill Kody


Nina Mercedez
sketch #2849 dj


Amer Amimer
sketch #2813 Stan from South Park by Amer Amimer


anonymous
anonymous
sketch #4649


anonymous
anonymous
sketch #2889


anonymous
anonymous
sketch #1079


anonymous
anonymous
sketch #5037 Dolphin by Meen Suksoi


anonymous
anonymous
sketch #3217


anonymous
anonymous
sketch #4176 Eye by Jawad Kallou


anonymous
anonymous
sketch #5210 I love you by Saul Mansanares


anonymous
anonymous
sketch #953


anonymous
anonymous
sketch #3517 Scratch from Ice Age by VlAd Craciun


sketchmaster
sketch #2616 Green Day by sketchmaster

tomski将独立的「鸟纲」置于「恐龙总目 兽脚亚目」的分类下是否合理?以及翼龙与鸟类存在演化上的关系吗? 知乎 coloring