These weirdos are the sister group of Vertebrates

ECHINODERMATA Pt.1/2
Part one about the crinoids, urchins and sea cucumbers
Part two :    • STARS of the Ocean  

Music by White Bat audio    / @whitebataudio  
Thumbnail : montage
Illustrations by Satoshi Kawasaki and Ceri Thomas
Icons next to names indicate the diet :
🦐 Plakton / Micro-organisms
🦠 Bacteria / Particules
🦴 Marine snow / Dead animals
🌱 Seaweed
💮 Coral / Recif animals
🪱 Invertebrates

The whole playlist :    • ANIMALIA EVOLUTION  

Sources and more informations about the animals shown :
Etacystis - https://www.jstor.org/stable/1303556
Herpetogaster - https://burgess-shale.rom.on.ca/fossi...
Eldonia - https://en.wikipedia.org/wiki/Eldonia
Discophyllum - http://www.fossilworks.org/cgi-bin/br...
Cyrtograptus - https://www.mindat.org/taxon-P33646.html
Dendrograptus - https://www.researchgate.net/figure/D...
Acorn worm - https://www.britannica.com/animal/aco...
Cothurnocystis - https://www.mindat.org/taxon-4877705....
Sokkaejaecystis - https://www.mindat.org/taxon-P64822.html
Rhenocystis - https://www.mindat.org/taxon-P31213.html
Enoploura - https://www.mindat.org/taxon-P31197.html
Isorophus - https://www.mindat.org/taxon-P30777.html
Thresherodiscus - https://www.mindat.org/taxon-P30795.html
Pleurocystites - https://www.jstor.org/stable/1304959
Heckerites - https://www.researchgate.net/figure/H...
Amygdalocystites - https://www.jstor.org/stable/1305682
Caryocrinites - https://www.mindat.org/taxon-P306304....
Ancyrocrinus - https://www.mindat.org/taxon-4873247....
Cupressocrinites - https://www.jstor.org/stable/29739065
Balacrinus - https://www.mindat.org/taxon-3250030....
Iocrinus - https://www.researchgate.net/figure/o...
Petalocrinus - https://www.mindat.org/taxon-4873150....
Scyphocrinus - https://en.wikipedia.org/wiki/Scyphoc...
Ammonicrinus - http://www.fossilworks.org/cgi-bin/br...
Japanese sea lily - https://en.wikipedia.org/wiki/Metacri...
Feather star - https://www.marinespecies.org/aphia.p...
Blue sea cucumber - https://www.sealifebase.ca/summary/Ac...
Black sea cucumber - https://www.sciencedirect.com/topics/...
Snot sea cucumber - https://australian.museum/learn/anima...
Snake sea cucumber - https://churaumi.okinawa/sp/en/fishbo...
Elpidia glacialis - https://www.marinespecies.org/arms/ap...
Sea pig - https://www.mbari.org/animal/sea-pig/
Jellyfish sea cucumber - https://www.theguardian.com/environme...
Headless chicken monster - https://www.nytimes.com/2018/10/22/wo...
Slate pencil urchin - https://australian.museum/learn/anima...
Eastern slate-pencil urchin - https://reeflifesurvey.com/species/ph...
Long-spined urchin - https://australian.museum/learn/anima...
Black sea urchin - https://www.sciencedirect.com/science...
Giant heart urchin - https://www.sealifebase.ca/summary/Pl...
Short-spinned urchin - https://bie.ala.org.au/species/https:...
Red sea urchin - https://www.marinespecies.org/aphia.p...
Purple sea urchin - https://www.sciencedirect.com/science...
Green sea urchin - https://en.wikipedia.org/wiki/Lytechi...

0:00 Introduction
0:30 Ambulacraria
1:05 Cambroernida
1:45 Eldoniidae
3:05 Hemichordata
5:05 Stylophora
7:25 Adrioasteroidea
8:25 Rhombifera
9:06 Paracrinoidea
10:10 Crinoidea
15:45 Holothuroidea
21:30 Echinoidea