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Protoavis is 75 million years older than Archaeopteryx lithographica according to evolution. What does this tell us?

2007-06-25 09:07:43 · 2 answers · asked by Jeremy Auldaney 2 in Science & Mathematics Earth Sciences & Geology

2 answers

Protoavis texensis ("First bird from Texas") is the name given to archosaurian fossil bones from the Late Triassic found near Post, Texas. These were described as a primitive bird which if valid would push back avian origins some 60-75 million years.

Why not? That's what science does, it continuously pushes the envelope!

2007-06-25 13:10:09 · answer #1 · answered by ekil422 4 · 1 0

Without bias from observation? What does that mean--that we shouldn't look at it? In that case, all we have to go on is the scientific name, which indicates that the namer of this fossil considers it to be a forerunner of birds, and that it was found in Texas.

If P. texensis is 75 million years older than Archaeopteryx, this tells us that the individual organisms were not contemporaneous, and one is therefore probably not an ancestor of the other.

2007-06-25 10:11:58 · answer #2 · answered by justjennith 5 · 0 0

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