Dinozaury miały farta?

Czyli co piszczy w paleontologicznej "trawie" :)
Awatar użytkownika
hanys
Jurajski allozaur
Jurajski allozaur
Posty: 1012
Rejestracja: 24 lipca 2008, o 14:37
Lokalizacja: beWYRYhills

Dinozaury miały farta?

Post autor: hanys »


Awatar użytkownika
nazuul
Moderator
Moderator
Posty: 6690
Rejestracja: 3 grudnia 2007, o 19:51
Imię i nazwisko: Maciej Ziegler
Lokalizacja: Wielkopolska

Post autor: nazuul »

Chodzi o tą pracę
Thomas R. Holtz, Jr. na DML pisze:Brusatte, S.L., M.J. Benton, M. Ruta, G.T. Lloyd. 2008. Superiority,
Competition, and Opportunism in the Evolutionary Radiation of Dinosaurs.
Science 321:1485-1488.

Abstract:
The rise and diversification of the dinosaurs in the Late Triassic, from 230
to 200 million years ago, is a classic example of an evolutionary radiation
with supposed competitive replacement. A comparison of evolutionary rates
and morphological disparity of basal dinosaurs and their chief
"competitors," the crurotarsan archosaurs, shows that dinosaurs exhibited
lower disparity and an indistinguishable rate of character evolution. The
radiation of Triassic archosaurs as a whole is characterized by declining
evolutionary rates and increasing disparity, suggesting a decoupling of
character evolution from body plan variety. The results strongly suggest
that historical contingency, rather than prolonged competition or general
"superiority," was the primary factor in the rise of dinosaurs.
http://www.bristol.ac.uk/news/2008/5884.html
Obrazek
[Stamp: Apsaravis] [Avatar: P. Weimer, CC BY-NC-SA 2.0]

ODPOWIEDZ