Finch
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well theres Subclass Anapsida (turtles). Members of the Subclass Anapsida have no fenestration in the skull
so i suppose they are fenestrations
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there is another one on the other side..[b said:Quote[/b] (TheAlphaWolf @ Mar. 13 2005,10:17)]That can't be the nasal opening because it's not centered.
[b said:Quote[/b] (Fruitbat @ Mar 13 2005, 08:31 PM)]
You've definitely got a partial skull there and it is very likely the skull of an Arctic Loon (Gavia arctica). The typical characteristics regarding your partial skull are as follows:
1) the frontals are pierced by large anterior perforations
2) the large, prominent supraorbital grooves have numerous small perforations (this character by itself identifies the bird as a member of the Gaviiformes)
3) the temporal fossae are deep and are separated by a well-defined sagittal ridge
Here are those features labeled on your partial skull:
The two holes in the top of the skull are not naturally occurring and were placed there by some natural or man-induced process. It is remotely possible that the bird was bitten by a carnivore and that those holes are artifacts of such an event.
Hope this helps a bit,
-Joe
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[b said:Quote[/b] ]no animals has its eyes on the top of its cranium..