• Mothra@mander.xyz
    link
    fedilink
    English
    arrow-up
    10
    ·
    4 months ago

    Quoting Wikipedia:

    Shark-like chondrichthyans such as Cladoselache and Doliodus first appeared in the Devonian Period (419–359 million years), though some fossilized chondrichthyan-like scales are as old as the Late Ordovician (458–444 million years ago).[1] The earliest confirmed modern sharks (selachimorphs) are known from the Early Jurassic around 200 million years ago >

    So, yes they appeared in the Devonian

      • _Gandalf_the_Black_@feddit.de
        link
        fedilink
        English
        arrow-up
        3
        ·
        4 months ago

        https://en.m.wiktionary.org/wiki/that

        That refers primarily to people or things; which refers primarily to things, and who refers primarily to people. Some authorities insist who/whom be used when making reference to people, but others, such as the Merriam-Webster dictionary, write that such prescriptions are “without foundation” and use of that in such positions is common and “entirely standard”.[2] Hence, one sees both “he is the man who invented the telephone” and “he is the man that invented the telephone.”