[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Mesozoic Neornithes



Hi,

Dakotornis cooperi:

Bruce R. Erickson, 1975
Dakotornis cooperi, a New Paleocene Bird from North Dakota
Scientific Publications of the Science Museum of Minnesota (new series) 3: 1-7

It was described in it's own family: Dakotornithidae, close to the
Threskiornithidae, but kow it's reffered to the Graculavidae.

Hope it helps,


Fred Ruhe


At 10:47 28-06-2001 +0200, you wrote:
>> On Wed, 27 Jun 2001, Grant Harding wrote:
>>
>> > Hiyo!
>> >
>> > Where in the world have neornitheans been found dating from the
>Mesozoic, and what parts of the Mesozoic did they date from?
>
>North America, Mongolia (don't bet too much on that), Uzbekistan
>(questionable), Chile (a bit less questionable), Antarctica. End-Cretaceous.
>
>> > Also, have neornitheans been found on all continents for all periods
>following the close of the Mesozoic?
>
>Yes AFAIK.
>
>> [cladogram]
>>
>> The genera and species are Mesozoic (although i think some may straddle
>> the border), as is the unnamed ?psittaciform. Some of this info is
>> probably outdated.
>
>Several have straddled the border to the Paleocene, such as *Volgavis* (ref:
>HP Mickey Mortimer's post on The Age of Dinosaurs in Russia and Mongolia),
>*Graculavus*, *Scaniornis*, AFAIK *Laornis*, *Tytthostonyx* and
>*Palaeotringa*.
>*Gallornis* is EK but so fragmentary that it must be regarded as a nomen
>dubium and should be referred to Ornithothoraces inc. sed. or suchlike,
>according to Feduccia (his 1996 book). The same book refers *Lonchodytes*,
>*Palintropus* and *Torotix* (nomen dubium) to Cimolopterygidae (no idea why
>or why not), mentions some unnamed graculavids from LK Mongolia, a
>presbyornithid from Montana and one from Vega Island (Antarctica). No idea
>whether the graculavids from Mongolia are the same as the badly preserved
>possible cormorant-relative from LK Mongolia that something else (forgot
>what) mentions...
>Additionally to *Neogaeornis* and an unnamed one from Uzbekistan, which are
>often referred to Gaviiformes but might turn out to be hesperornithiforms,
>there is Chatterjee's *Polarornis* from Antarctica (Seymour Island, IIRC).
>This is unquestionably a gaviiform (more in a §&%$% forthcoming Details On
>*Protoavis* segment...)
>Never read of *Dakotornis* -- where and when is this from?
>
>
>