Some of the interest is the result of the discovery and redescription of exceptionally preserved "Burgess Shale-type" faunas, where the soft parts of animals are preserved along with their hard skeletons.
(Some of the interest; is; the result of the discovery and redescription of exceptionally preserved "Burgess Shale-type" faunas) (the soft parts of animals; are preserved; L:exceptionally preserved "Burgess Shale-type" faunas)
Some of the interest the soft parts of animals
is are preserved
the result of the discovery and redescription of exceptionally preserved "Burgess Shale-type" faunas
L:exceptionally preserved "Burgess Shale-type" faunas