为什么鸟类作为恐龙的后代,生物学上被分为独立的“鸟纲”而不是蜥形纲蜥臀目下的“鸟亚目”? 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 theseBillionaire, Stork, Whiskers, Casket, Cafe, Claim, Plank, Mule, Rowboat, Bounce castle, 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 #5159 Frank Briones Silvia Haynes


anonymous
anonymous
sketch #2283 Head in a shoe


anonymous
anonymous
sketch #3599 Lovely pencil face


anonymous
anonymous
sketch #3680 Infected Mushroom by Rohit Rahul


Marlyn Ortiz
sketch #2029 GOD 'S PROMISE ...


Sam Torres
sketch #2723 by Sam Torres


sketchmaster
sketch #2619 Underwater by sketchmaster


anonymous
anonymous
sketch #5341 Rafael Nadal by Alina Danielle


Karim Tayyeby
sketch #2744 Burce Lee by Karim Tayyeby


anonymous
anonymous
sketch #5208 Alf by David Rossien


anonymous
anonymous
sketch #3367 Ichigo by Szymon Broszczak


anonymous
anonymous
sketch #1446


Zay Lin
sketch #2087 zay lin


anonymous
anonymous
sketch #3244 Winnie the Pooh by Ashok Kumar Chaturvedi


anonymous
anonymous
sketch #4467


anonymous
anonymous
sketch #5314


anonymous
anonymous
sketch #2035 Ernest Hemingway... chayrolfrypan


anonymous
anonymous
sketch #3547 Lady in red Toky Niaina Randrianarisoa


anonymous
anonymous
sketch #4900 Moonlight by Abdelwahab Haik


anonymous
anonymous
sketch #5228 Rin & Len by Mark Phillips


anonymous
anonymous
sketch #1122 norooz


anonymous
anonymous
sketch #1695


anonymous
anonymous
sketch #1289 peace within


anonymous
anonymous
sketch #5221


anonymous
anonymous
sketch #4646 Panda by Raimundo Santos


anonymous
anonymous
sketch #3157 umpa lumpa


anonymous
anonymous
sketch #4221 Moi.


anonymous
anonymous
sketch #3676 Sceptical horse by Koes Maung

tomski为什么鸟类作为恐龙的后代,生物学上被分为独立的“鸟纲”而不是蜥形纲蜥臀目下的“鸟亚目”? 知乎 coloring