Pikaia – The First Vertebrate? Or Cambrian Oddball Cousin? | Dinosaurs EXPLAINED
500 million years ago Earth looked very different from the way it does today. There were no living animals on land, everything worth watching was underneath the waves. This time was dominated by the Cambrian Explosion; a slice of time in which life diversified in innumerable ways. Many different animal groups emerged, and many went extinct. We, ourselves, owe everything to these early survivors, for had they gone extinct, we would not be here to talk about them. One of the earliest animals to show signs of being related to us, is the squirming squiggling eel-like, Pikaia the “Worm-Fish from Pika Peak.”
__________________________________________________________________
Art in Thumbnail belongs to - Pedro Andrade
✅ Instagram ✅
/ definitelynotpedroandrade
__________________________________________________________________
✅ Kuzim / Adam Midzuk ✅
/ kuzim_za
✅ Tyler Addison ✅
/ tyleraddison17
__________________________________________________________________
✅ PATREON ✅
/ edgescience
✅ STICKERS & SHIRTS ✅
https://www.redbubble.com/people/Pain...
✅Facebook: facebook.com/ExpeditionDG/
✅Twitter: twitter.com/EDGEinthewild
✅Instagram: @edgeonthetrail
✅ MUSIC ✅
“EDGE Theme” - Taung Child / Reuben Cozens
“On The Ground” - Kevin MacLeod
“Sam At The Lake” - Steve Jablonsky
“Walking With Monsters Theme Metal REmix
“Cretaceous”
“Get Ecited” - Dr. Stone
“ED Life” - Dr. Stone
“Moog City” - Spectral Remix
“Aria Math” - Flippin Galaxy
“Rollin at 5” - Kevin MacLeod
“Moon Men” - Jake Chudnow
“Virtual Death” - Karl Casey
__________________________________________________________________
If I've used something on my video that you don't want me to use, PLEASE EMAIL ME first before flagging a video, I'm very reasonable and will take the video down to replace whatever image or video belongs to you.
Email: [email protected]
__________________________________________________________________
RESEARCH
Gould, S.J., 1989, Wonderful Life: The Burgess Shale and the Nature of History: New York, W. W. Norton @ Company, Inc.
Morris, S.C., and Caron, J.B., 2012, Pikaia gracilens Walcott, a stem-group chordate from the Middle Cambrian of British Columbia: Biological Reviews.
Lacalli, T., 2012, The Middle Cambrian fossil Pikaia and the evolution of chordate swimming: EvoDevo, v., 3, I., 12, p. 1-6.
Mallatt, J., and Holland, N., 2013, Pikaia gracilens Walcott: Stem Chordate, or Already Specialized in the Cambrian?: Journal of Experimental Zoology Part B, Molecular and Developmental Evolution, v., 320, i., 4, p. 247-271.
__________________________________________________________________
Hashtags - #CambrianExplosion #OriginofLife #Evolution
__________________________________________________________________
Video Sections
00:00-01:47 - Intro
01:47-04:48 - Cambrian & Lagerstatte
04:48-05:58 - Burgess Shale
05:58-09:21 Pikaia History
09:21-17:06 - Pikaia Biology
17:06-20:54 Pikaia Phylogeny
20:54-21:13 Pikaia Paleoecology
21:13-23:15 Pikaia Means A Lot
23:15-24:50 - Outro