Australian fish

["Oliver Rauhut" <owmrauhut@hotmail.com>]

Dear List,

I am posting the following reply to a request from yesterday on behalf of 
Adriana López-Arbarello, who is not a member of the list, but knows 
considerably more about these things than I do...
__________________________________________

Yesterday somebody sent a picture of an Australian fish, asking for its 
identification. Some others suggested that it could be an specimen of 
Cooyoo.
I think that the fish in the picture looks much more similar to 
Pachyrhizodus marathonensis Etheridge 1905 (redescribbed by Bartholomai, 
1969). I cannot see details clearly in the picture, but look for example at 
the relative postion of the quadrate-mandibular articulation, the shape of 
the supramaxilla, circumborbital and preopercular bones.
Check the following papers:

Bartholomai, A. 1969. The Loweer Cretaceous elopoid fish Pachyrhizodus 
marathonensis (Etheridge Jr.). In: Stratigraphy and Palaeontology. K.S.W. 
Campbell, ed., Aust. Nat. Univ. Press, Canberra: 249-263.

Lees, T. and Bartholomai, A. 1987. Study of a Lower Cretaceous 
actinopterygian (Class Pisces) Cooyoo australis from Queensland, Australia. 
Mem. Qd. Mus. 25(1): 177-192.

Greetings,

Adriana


---------------------------------------------------------
Adriana López-Arbarello
Museo Paleontológico Egidio Feruglio
Fontana y Lewis Jones
9100 Trelew
ARGENTINA
E-mail: alarbare@hotmail.com

_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.