The five Strangest Animals of the Cambrian period

Описание: 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

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0:00 Space Was The Place    • Audio Hertz - Space Was The Place  
2:31 Confused State - The Dark Contenent    • Kevin MacLeod Confused State The Dark Cont...  
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5:25 Hackerland    • Hackerland - Twin Musicom  
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References:
1) Hallucigenia sparsa
a) Nature YouTube channel:    • Hallucigenia: The worm with the missing head  
b) Zoosparkle YouTube channel:    • HALLUCIGENIA: l'animale più strano che sia...  
c) Wikipedia page: https://en.wikipedia.org/wiki/Halluci...
d) Nature article: https://www.nature.com/articles/natur...
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/wi...

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/natur...
b) Wikipedia page: https://en.wikipedia.org/wiki/Saccorh...
c) BBC article:https://phys.org/news/2017-01-bag-lik...

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