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Re: Questions of Various Kinds



At 00:19 8/10/96 -0400, Dinogeorge wrote:
>
>One problem with Luis Chiappe's paper: it covers the >second< 85 million
>years of avian evolution, not the first. The >first< 85 million years of
>avian evolution is mainly that part leading from the common ancestor of
>Dinosauria through _Protoavis_ to _Archaeopteryx_. Unfortunately, given the
>presently known fossil record, a review of the first 85 million years would
>be rather short (unless the theropod side branches were covered...).

    Until anybody else make a detailed study of _Protoavis_ specimens, it
should be considered with extreme caution, even not considered it at all
(the same has to be done with _Shuvosaurus_). The first undoubtable bird we
know is _Archaeopteryx_, and nothing else. Anyway, the Chiappe's paper also
cover what you call "the first 85 million years of avian evolution",
explaining the situation of _Protoavis_.

Bernardino P. Perez-Moreno                   Fax: 34-1-3978344
Unidad de Paleontologia                      E-mail: Nino@ccuam3.sdi.uam.es
Departamento de Biologia                     Phone: 34-1-3978139 
Facultad de Ciencias
Universidad Autonoma de Madrid
28049 - Madrid
SPAIN