Hi!
It would be D, because trilobites were aquatic.
Hope this helps!
Sedimentary because it is made of layers of sediment and fossils can easily get mixed in
Thanks i learnt something new
Answer:
A SOURCE OF ERROR BECAUSE IFTHERE ARE MISTAKES THEN THE INFO ISNT ACCURATE
Explanation:
MARK BRAINLEST PLEASE
I am learning about that I think it is A
if I am wrong then sorry
hope this helps have a nice day