Re: mesosoic placentals

Sorry, it's probably not synopsis but complete article in html and I see
that this time pdf can be downloaded freely so You don't have to pay and You
can download it for Your own.

Użytkownik "Dawid Mazurek" <[EMAIL PROTECTED]> napisał w wiadomości
news:[EMAIL PROTECTED]
> Look at
>
http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v416/n6883/f
> ull/416816a_r.html You can see in this synopsis that Eutheria is an
> infraclass of subclass Boreosphenida. I don't why they write in one place
> it's a placental, while elswhere including the original complete article
> itself it's named eutheria incertae sedis. Anyway I've got the complete
> article about Eomaia in pdf, if anyone wishes I can send it via e-mail.
>
> Uzytkownik "John Harshman" <[EMAIL PROTECTED]> napisal w
> wiadomosci news:[EMAIL PROTECTED]
> >
> >
> > Dawid Mazurek wrote:
> >
> > > Uzytkownik "John Harshman" <[EMAIL PROTECTED]> napisal
w
> > > wiadomosci news:[EMAIL PROTECTED]
> > >
> > >>
> > >>Dawid Mazurek wrote:
> > >>
> > >>
> > >>>Eutherians are placental mammals and their relatives (see e.g.
> > >>>
> > >>>
> > >
>
http://www.fmnh.helsinki.fi/users/haaramo/Metazoa/Deuterostoma/Chordata/Syna
> > >
> > >>>psida/Mammalian_orders.htm ). Together with metatherians (marsupials
> and
> > >>>their relatives such as deltateroids) they form a clade Theria.
> > >>>
> > > Marsupials
> > >
> > >>>and placentals are recently thought to form a clade Boreosphenida.
> > >>>Article by Luo et al. 2002 is also a good source of mammalian clade
> > >>>definitions (see http://www.app.pan.pl/acta47/app47-001.pdf  -this is
> > >>>
> > > opens
> > >
> > >>>a while).Thanx for those information. David.
> > >>>
> > >>
> > >>OK, I see that Eutheria is being used for the stem-based group Homo >
> > >>Didelphis, and Placentalia as the crown group (though confusingly, Luo
> > >>et al. also refer to "stem-group Placentalia", whatever that is).
Benton
> > >>does not make this distinction, so some of his "placentals" might not
be
> > >>members of Placentalia under your definition. Then again, some of them
> > >>certainly are.
> > >>
> > >>Luo et al. don't define Boreosphenida, but I infer it to be the crown
> > >>group of Theria, with Theria defined as a stem-based group Homo >
> > >>Ornithorhynchus. Is that correct?
> > >
> > > Well, it looks like to be so, but i'm not certain myself.
> >
> >
> > Turns out I was wrong. I found it in the Luo et al paper. Boreosphenida
> > actually includes more than the crown group. It's defined as "the common
> > ancestor of Kielantherium and living marsupials and placentals, plus all
> > of its descendants." Why this clade needs a name is not quite clear to
> > me. The crown group of Theria is just referred to as "crown-group
> > Theria", and I think, though it's not quite clear, that they mean to
> > have Theria be defined as the crown group. So Boreosphenida actually
> > includes Theria. And there seems to be no name given to the stem-based
> > group.
> >
> >
> >
>
>