Xenophyophores

    #the process of fossilization

    #gastropoda

    #ma years

    #geological time scale

    #digital atlas

    #paraphyletic

    #parsimony in scientific research

    #pycnofibers

    #parsimony science

    #osteoderms

    #fred neidhardt enteric medium

    #xenophyophores

    #aggregatibacter actinomycetemcomitans

    #small things considered

    #esther lederberg

    #when was the tertiary period?

    #when was the cretaceous period?

    #fossils

    #when was the triassic period?

    #orthoceras

    #cast mold

    #trace fossil

    #molds and casts

    #cast fossil

    #mold and cast fossils

    #ammonoidea

    #what is a body fossil

    #geological epoch

    #geological eras