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 theseAlarm clock, Iron, Pancakes, Crew cut, Dork, Fabric, Pitchfork, Magician, Torque, Hula, 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 #380


anonymous
anonymous
sketch #2866 Soul Eater by Ani Chachua


anonymous
anonymous
sketch #2340


anonymous
anonymous
sketch #5136


anonymous
anonymous
sketch #542 life


anonymous
anonymous
sketch #3479


anonymous
anonymous
sketch #3727 Stitch by Louis Tradieu


anonymous
anonymous
sketch #3701 amazing Skull


anonymous
anonymous
sketch #5013 Pursuing Dreams by Mário JBudo


anonymous
anonymous
sketch #21085 Tobirama by Enrique L. Manly


anonymous
anonymous
sketch #3595


Donara Smbatyan
sketch #1551 donara


anonymous
anonymous
sketch #132


anonymous
anonymous
sketch #3339 Sasuke by Jean-Benoit Renaud


Nassim Nouri
sketch #2765 Kratos by Nassim Nouri


anonymous
anonymous
sketch #4937 Favorite animal competition runner-up: White Tiger by Deepak Kaushik


Smile Better
sketch #2781


anonymous
anonymous
sketch #1892 hmmmm........


anonymous
anonymous
sketch #5086 Lion by Z Ionut Ady


anonymous
anonymous
sketch #20215 Desert


anonymous
anonymous
sketch #4493 Jimi Hendrix by Alex Stoun


anonymous
anonymous
sketch #20471


anonymous
anonymous
sketch #3562 Angry by Leon Soria Ricardo


anonymous
anonymous
sketch #1216

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