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 theseKangaroo, Oat meal, Peanut, Wrench, Hospital, Hula hoop, Moss, Sundial, Dam, Shipwreck, 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 #5313 Katy Perry by Monalisa Theresia


anonymous
anonymous
sketch #4300 República, comunismo, libertad


anonymous
anonymous
sketch #5084 Harry Potter by Enrique L. Manly


anonymous
anonymous
sketch #2577


anonymous
anonymous
sketch #3736 Why so serious? by Taï Marsan


Fabio Sala
sketch #2672


anonymous
anonymous
sketch #3166 Axl Rose by Jessie Lightwood


anonymous
anonymous
sketch #5223 Elsa from Frozen by Ben De Jesus


anonymous
anonymous
sketch #312


anonymous
anonymous
sketch #4766 The Little Mermaid by Zizou Aiman


anonymous
anonymous
sketch #3036 Wiz Khalifa by Malyi Link


anonymous
anonymous
sketch #3562 Angry by Leon Soria Ricardo


Tom Kelly
sketch #215 my mickey mouse


anonymous
anonymous
sketch #3381 DBZ by Adidtzu Ady


anonymous
anonymous
sketch #3599 Lovely pencil face


anonymous
anonymous
sketch #4948 Snow White by George Lucaz


anonymous
anonymous
sketch #4031


Rachel Roe
sketch #2646 Buzzy bee on flowers


Helyryn
sketch #293 jdjdjdjdj


anonymous
anonymous
sketch #5287


anonymous
anonymous
sketch #5073 Broken Heart by Islam Mourad


anonymous
anonymous
sketch #1260


anonymous
anonymous
sketch #5037 Dolphin by Meen Suksoi


anonymous
anonymous
sketch #3939


Alexander Volodimirovich Danilchenko
sketch #2777 Ralph & Vanellope by Alexander Volodimirovich Danilchenko


anonymous
anonymous
sketch #3058 Marilyn Monroe by Adam Pyszny

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