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Re : Arctometatarsalia condition

To: "Alessandro Marisa" <amaris@tin.it>
Subject: Re : Arctometatarsalia condition
From: forelf@internet19.fr (Francoise Forel)
Date: Sat, 12 Sep 98 14:26:20 PDT
Cc: dinosaur@usc.edu
In-reply-to: <001401bdde41$12682ea0$5a23d8d4@default>
References: Conversation <001401bdde41$12682ea0$5a23d8d4@default> with last message <001401bdde41$12682ea0$5a23d8d4@default>
Reply-to: forelf@internet19.fr
Sender: owner-dinosaur@usc.edu

> Does someone tell me what's means that the Arctometatarsalian condition is
> reversed in Archaeopteryx, Ornithurine and Enanthiornithine birds?

The arctometatarsalian condition is 'pinching' of the third metatarsal
(long bone of the foot) between the second and fourth metatarsals (Dr Holtz
will explain this better than me). Your stating means that the common
ancestor of *Archaeopteryx*, Ornithurae and Enanthiornithes had the
arctometatarsalian condition, but that these taxa secondarily lost this
feature.

> 
> Thank you in advance
> Alessandro Marisa
> Via A. Grandi n18 ROVERETO (TN) ITALY
> Tel: 039-0464-434658 Eamil: amaris@tin.it
> 

Best regards.


Félix Landry
e-mail: forelf@internet19.fr

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