• Sketchite
Sketchite

为什么鸟类都是前肢进化成翅膀，而不是再进化出一双翅膀而保留四肢？这样不是方便的多吗？ 知乎 Template






Link:
sketch 1643
sketch 3539 Octo by Aristo A. Kadir
sketch 12 my bear
sketch 5100 Shadow by An Nguyen
sketch 3236 Sunset by Aaron Bahary
sketch 1703
sketch 5130 Batman by Kamal Ahmed Tantawy
sketch 5090

You need a modern browser try chrome, to view this.
Background image: Hide Show

View Larger Image Image Credit: zhihu.com

sketch 4191
sketch 5018 Owl by Komlós László
sketch 5044
sketch 5330 Frozen by Amanda Kachadurian
sketch 20840 Dog by Laur Ūūtiis
sketch 523 the man
sketch 4300 República, comunismo, libertad
sketch 1169 ENJOY IT!!!!!!!! OH NO EAT IT OR IT WILL MELT!!!!! :0





Try and sketch some of theseZipper, Superhero, Medicine, Forge, Wood burning stove, Arcade, Sprouts, Flea, Cathedral, Rake, 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?
view like
sketch #3562 Angry by Leon Soria Ricardo
anonymous
anonymous
sketch #3562 Angry by Leon Soria Ricardo

view like
sketch #3385
anonymous
anonymous
sketch #3385

view like
sketch #5154
anonymous
anonymous
sketch #5154

view like
sketch #3047 Oppa Pika Style by Itz Rakhi
anonymous
anonymous
sketch #3047 Oppa Pika Style by Itz Rakhi

view like
sketch #669 Cluck
Rachel Roe
sketch #669 Cluck

view like
sketch #521 A hungry caterpillar
Tom Kelly
sketch #521 A hungry caterpillar

view like
sketch #2744 Burce Lee by Karim Tayyeby
Karim Tayyeby
sketch #2744 Burce Lee by Karim Tayyeby

view like
sketch #5307
anonymous
anonymous
sketch #5307

view like
sketch #5165 Marceline by Marvin Chrome
anonymous
anonymous
sketch #5165 Marceline by Marvin Chrome

view like
sketch #323
anonymous
anonymous
sketch #323

view like
sketch #2892 Joker by Frank Aguiar Au
anonymous
anonymous
sketch #2892 Joker by Frank Aguiar Au

view like
sketch #2431 face :D
anonymous
anonymous
sketch #2431 face :D

view like
sketch #819
Laura Agapi Asnicar
sketch #819

view like
sketch #15
Tom Kelly
sketch #15

view like
sketch #1168
anonymous
anonymous
sketch #1168

view like
sketch #5415
anonymous
anonymous
sketch #5415

view like
sketch #5158 Till Lindemann by Cristina Love
anonymous
anonymous
sketch #5158 Till Lindemann by Cristina Love

view like
sketch #5275
anonymous
anonymous
sketch #5275

view like
sketch #5268 Harley Quinn by 조바다
anonymous
anonymous
sketch #5268 Harley Quinn by 조바다

view like
sketch #1079
anonymous
anonymous
sketch #1079

view like
sketch #5179 Audrey Hepburn by 陳一夫
anonymous
anonymous
sketch #5179 Audrey Hepburn by 陳一夫

view like
sketch #3753
anonymous
anonymous
sketch #3753

view like
sketch #2772 Merry Christmas from Victor Montecinos Jose Rondon
Jose Rondon
sketch #2772 Merry Christmas from Victor Montecinos Jose Rondon

view like
sketch #3399 zay lin
Zay Lin
sketch #3399 zay lin

view like
sketch #690 barco
anonymous
anonymous
sketch #690 barco

view like
sketch #3810
anonymous
anonymous
sketch #3810

view like
sketch #1118 easy zombie
anonymous
anonymous
sketch #1118 easy zombie

view like
sketch #4269 dragón
Ainhoa White
sketch #4269 dragón

view like
sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )
anonymous
anonymous
sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )

view like
sketch #5134
anonymous
anonymous
sketch #5134

tomski为什么鸟类都是前肢进化成翅膀，而不是再进化出一双翅膀而保留四肢？这样不是方便的多吗？ 知乎 coloring
view template
鸟类的翅膀能在一定条件下重新演化为类似于其兽脚亚目恐龙祖先的有爪的前肢吗？ 知乎 sketch template
view template
恐龙演化为鸟类的过程中羽毛是何时出现如何演化的？ 知乎 sketch template
view template
为什么鸟类是恐龙 知乎 sketch template
view template
为什么鸟类都是前肢进化成翅膀，而不是再进化出一双翅膀而保留四肢？这样不是方便的多吗？ 知乎 sketch template
view template
鸟类适于飞行的特征 蓝色动物学（中国动物学普） sketch template
view template
鸟的翅膀的结构 百度知道 sketch template
view template
为什么大众仍然不接受鸟类源于恐龙？ 知乎 sketch template
view template
毛概——羽毛的结构与辨识概述（第二版） 哔哩哔哩 sketch template
view template
第十九章 鸟纲（Aves） 普通动物学 地理教师 sketch template
view template
认识爱鸽的各个器官（一） 中信各地鸽舍 sketch template
view template
鸟类的进化 知乎 sketch template
view template
鸽解剖 史优春鸽舍 中信各地鸽舍 sketch template
view template
动物飞行 搜狗百 sketch template
view template
运动规律 鸟的飞翔 百度文库 sketch template
view template
九千年了，音乐依然是们的解药 河南博物院镇馆之宝 骨笛 sketch template
view template
鸟的结构示意图 千图 sketch template
view template
鸟类飞行有哪些规律？ 知乎 sketch template
view template
恐龙是如何进化成鸟类的？ 知乎 sketch template
view template
鸟飞行运动规律 sketch template
view template
第十九章 鸟纲（Aves） 普通动物学 地理教师 sketch template
view template
家禽学 sketch template
view template
鸟的各部分结构以及画法 禽鸟 sketch template
view template
画翅膀真的简单！教你如何画出好看的鸟类翅膀画法！ 知乎 sketch template
view template
陆龟到底会不会游泳？ 知乎 sketch template
view template
每一课丨鸟类翅膀的画法 知乎 sketch template
view template
鸟的翼蝙蝠的翼手鲸的鳍狗的前肢和人的上肢从外形和功能来看这些器官很不相同但是比较它们的内部结构却基本一致那就是它们都是由肱骨 sketch template
view template
鸟：汉字的起源与演变（小学一年级语文生字 第34集） 知乎 sketch template
view template
【鸟类大观什么样的翅膀最适合飞行？ 指数 sketch template
view template
鸟类飞行过程运动规律分解图学习干货 漫品狗 MG动画短片素材 Flash源文件 动漫矢量图免费素材 sketch template
view template
第十九章 鸟纲（Aves） 普通动物学 地理教师 sketch template
view template
每一课丨鸟类翅膀的画法 知乎 sketch template
view template
题目下列各项中所有鸟类的生殖和育必须经历的阶段是 A 交配 B 巢 C 孵卵 D 育雏 题目和参考答案——青夏教育精英家教—— sketch template
view template
2012中考生物冲刺 生物进化的历程 sketch template
view template
恐龙会进化成什么样？ 百知识 恐龙，恐龙大百大全，恐龙普学百 自贡市源中圆技有限公司 sketch template
view template
深度绘画好文！9种动物结构一目了然！ 设计 sketch template