The five Strangest Animals of the Cambrian period

There were many strange animals during the Cambrian period. I tried to choose five of them.

0:07 Hallucigenia sparsa
1:19 Opabinia regalis
2:37 Cambropachycope clarksoni
3:08 Wiwaxia corrugata
4:22 Vetulicola spp.
5:52 Saccorhytus coronarius

Music:
0:00 Space Was The Place https://www.youtube.com/watch?v=Cd6d5yvJ4Jw
2:31 Confused State - The Dark Contenent https://www.youtube.com/watch?v=9CgSAcfX7os
Confused State - The Dark Contenent di Kevin MacLeod è un brano autorizzato da Creative Commons Attribution (https://creativecommons.org/licenses/by/4.0/)
Fonte: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100453
Artista: http://incompetech.com/
5:25 Hackerland https://www.youtube.com/watch?v=digInp8Q5xA
Hackerland di Twin Musicom è un brano autorizzato da Creative Commons Attribution (https://creativecommons.org/licenses/by/4.0/)
Fonte: http://www.twinmusicom.org/song/292/hackerland
Artista: http://www.twinmusicom.org
References:
1) Hallucigenia sparsa
a) Nature YouTube channel: https://www.youtube.com/watch?v=9-Z9Ssgb0Kg
b) Zoosparkle YouTube channel: https://www.youtube.com/watch?v=NaT4A8OEDgI
c) Wikipedia page: https://en.wikipedia.org/wiki/Hallucigenia
d) Nature article: https://www.nature.com/articles/nature14573
e)Book: A History of Life in 100 Fossils.

2)Opabinia regalis
a) Wikipedia page: https://en.wikipedia.org/wiki/Opabinia
b)"The morphology of Opabinia regalis and the reconstruction of the arthropod stem-group" ; Budd,2007

3)Cambropachycope clarksoni
a)''Upper Cambrian stem-lineage crustaceans and their bearing upon the monophyly of Crustacea and the position of Agnostus'';Waloszek & Muller, 1990
b)https://prehistorico.fandom.com/es/wiki/Cambropachycope

4)Wiwaxia corrugata
a) Wikipedia page: https://en.wikipedia.org/wiki/Wiwaxia
b)Smith, M. R. (2014). "Ontogeny, morphology and taxonomy of the soft-bodied Cambrian 'mollusc' Wiwaxia". Palaeontology. 57 (1): 215–229.
c)Smith, M. R. (2012). "Mouthparts of the Burgess Shale fossils Odontogriphus and Wiwaxia: Implications for the ancestral molluscan radula". Proceedings of the Royal Society B. 279 (1745): 4287–4295. doi:10.1098/rspb.2012.1577. PMC 3441091. PMID 22915671

5)Vetulicola spp.
a) Wikipedia page: https://en.wikipedia.org/wiki/Vetulicola
b)García-Bellido, Diego C; Paterson, John R (2014). "A new vetulicolian from Australia and its bearing on the chordate affinities of an enigmatic Cambrian group". BMC Evolutionary Biology. 14: 214. doi:10.1186/s12862-014-0214-z. PMC 4203957. PMID 25273382.
c)Dominguez, Patricio and Jeffries, Richard. (2003). Fossil evidence on the origin of appendicularians. Paper read at International Urochordate Meeting 2003. Abstract at [2] - URL retrieved June 22, 2006.

6)Saccorhytus coronarius
a)Nature article: https://www.nature.com/articles/nature21072
b) Wikipedia page: https://en.wikipedia.org/wiki/Saccorhytus
c) BBC article:https://phys.org/news/2017-01-bag-like-sea-creature-humans-oldest.html

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