How turtle shells evolved… twice – Judy Cebra Thomas

Check out the fascinating science behind the evolution of the turtle shell, 超過 260 million years in the making.

—

Modern turtle shells are almost as diverse as the turtles themselves. Sea turtles have flatter, lighter shells for gliding through the water. Land-dwelling tortoises have domed shells that can slip free of predators’ jaws. Leatherback turtles have shells without the ring of bone around the edge. So how did the shell evolve? Judy Cebra-Thomas explores the ancestry of the turtle.

Lesson by Judy Cebra-Thomas, directed by Cabong Studios.

註冊我們的通訊: http://bit.ly/TEDEDNewsletter
在 Patreon 上支持我們: http://bit.ly/TEDEDPatreon
訂閱wocomoMUSIC: http://bit.ly/TEDEDFacebook
在推特上找到我們: http://bit.ly/TEDEDTwitter
在 Instagram 上窺視我們: http://bit.ly/TEDEDInstagram
查看完整課程: https://ed.ted.com/lessons/how-turtle-shells-evolved-twice-judy-cebra-thomas

非常感謝我們的顧客對我們的支持! 沒有你，這個視頻是不可能的! Brighteagle, Beatriz Inácio, Mighterbump, Pamela Harrison, Maija Chapman, Liana Switzer, Curtis Light, The Brock, Dianne Palomar, Edgar Campos Barrachina, Maria Lerchbaumer, Ever Granada, Marin Kovachev, Ravi S. Rāmphal, Penelope Misquitta, Tekin Gültekin, Jhuval, Hans Peng, Gaurav Mathur, Erik Biemans, 東尼, 米歇爾, 凱蒂和喬許·佩德雷蒂, 瓦伊巴夫·米爾焦卡, 托馬斯·巴爾曼, 艾倫·海耶斯, 艾丹·福雷羅, 烏代·基肖爾, 米哈伊爾·施基列夫, 德韋什·庫馬爾, 桑尼·帕特爾, 阿努吉·托馬爾, 洛厄爾·弗萊明, 大衛彼得羅維奇, 陳懷南, 斯蒂娜·博伯格, 亞歷山德里娜·丹尼菲爾德, 金家均, 崔維斯·韋爾曼, 還沒弄清楚, 凱特琳·德·法爾科, 肯, zjweele13, 安娜-皮奇納昆茨, 埃德拉·帕尼格爾, 埃琳娜·克雷西亞, 托馬斯·蒙加萬, 亞歷杭德羅·卡舒亞, 傑倫·布萊克本, 瑜珈空中飛人旅行癖, Sandy Nasser and Venkat Venkatakrishnan.