Different clay minerals have formed on different parts of the animals of the Cambrian Burgess Shale of British Columbia, a selectivity that may reflect the chemical composition of the tissues themselves, or their susceptibility to decay.
(Different clay minerals; have formed; on different parts of the animals of the Cambrian Burgess Shale of British Columbia) (a selectivity; may reflect; the chemical composition of the tissues themselves, or their susceptibility to decay)
Different clay minerals a selectivity
have formed may reflect
on different parts of the animals of the Cambrian Burgess Shale of British Columbia
the chemical composition of the tissues themselves, or their susceptibility to decay