[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: No Cretaceous placental mammals?
Mike Keesey wrote:
They find _Vegavis iaai_, a Maastrichtian bird from Antarctica, to bea
stem-anatid. This means, at the very least, that pan-palaeognathes,
pan-galliforms, pan-neoavians, pan-anhimids, pan-anatids, and
the_Anseranas_ total group were distinct before the K/Pg boundary.
Probably also the respective stem groups that include odontopterygiforms,
dromornithids, and gastornithids, given that these groups also cluster at
the base of the Neornithes, outside Neoaves.
Need a break? Find your escape route with Live Search Maps.