invert_nexus said:
If pterosaurs are actually ornithocheirids and are related to the Albatross and Frigate birds then this is more than a 'new archeological finding'. This would completely rewrite everything we know about the evolution of birds. Birds are not descended from pterosaurs.
I can only guess that by 'related to' they actually mean 'similar to'. Two very different meanings. The first would be a truly momentous statement. The latter would be ho-hum.
Or are you saying that the fossil in question is not a pterosaur at all but rather a bird?
First, "I" was not suggesting or saying anything. I was doing you guys a favor by relaying to you the information about this new ground-breaking fossil discovery, i.e., of course, if you truly are interested in evolution and paleontology, because if you were then you would be excited about this discovery and want to learn more about it. And if that is the case, I would gladly even go out of my way and download the entire journal article and send it to you so that you can analyze and learn from what this team of paleologists have found - in the interest of science. Do you have an interest in paleology that you would like to look over their articulate analyses of this dinosaur species?
Again, what they summarized is the following:
""This new Yaverland pterosaur is undoubtedly an ornithocheirid, and similar to several species that belong to this family. However, it lacks distinguishing features of all genera currently included in this taxon and represented by cranial material, but exhibits a number of characters (maxillo/premaxillary suture descends slightly posteriorly, fifth to seventh pair of dental alveoli of similar size and significantly smaller than pairs one to four; palatal ridge extends no further anteriorly than dental alveoli 8 and 9; and presence of fronto/parietal and maxillo/premaxillary crests that do not merge over the nasoantorbital fenestra or cranium) that are not found in any other ornithocheirid. Consequently, we assign this taxon to a new genus and species of the Ornithocheiridae....This new record fills that gap and further encourages the idea that ornithocheirids were present in Western Europe throughout the Early Cretaceous. An unusual feature of the material described here is its discovery in a plant bed deposited within a fluvial continental setting. Most ornithocheirids have been recovered from marginal or fully marine sediments (Unwin, 2001, table 1) and they are thought to have had a life style broadly similar to that of some modern ocean-going birds such as the Albatross and Frigate Bird. This record of an ornithocheirid preserved in a continental environment adds to other recent reports of these pterosaurs from similar settings (Unwin et al., 2000 and Unwin, 2001), although it is still not clear if these represent accidental occurrences or indications that some ornithocheirids lived in terrestrial environments."
Now just read the first sentence:
"This new Yaverland pterosaur is undoubtedly an ornithocheirid, and similar to several species that belong to this family."
Then they go on to say that because of the similarities of this pterosaur as an ornithocheirid - wing structure similarities like that of an ornithocheirid "thought to have had a life style broadly similar to tthat of...the Albatross and Frigate Bird," and because "This ornithoceired...adds to other recent reports of these pterosaurs." And right before this they say "Consequently, we assign this taxon to a new genus and species of the Ornithocheiridae....This new record fills that gap and further encourages the idea that ornithocheirids were present in Western Europe throughout the Early Cretaceous."
So "yes" indeed you are in a sense right by saying that "This would completely rewrite everything we know about the evolution of birds." But they are looking at the "similarities," so you have to be more critical in examining the use of the language here. No one, especially not I, ever suggested or said that "Birds are descended from pterosaurs," but "yes" there are great similarities, and this study shows it. Birds are descended from the taxon dinosauria that evolved into six other clades of dinosaurs, one of which, the dinosaur clade Coelurosauria, evolved into seven more clades, one of which evolved into the clade Maniraptora that evolved into four more clades, one of which were Aves (the ancestor to modern day birds).
Again, you are correct, their discovery is rewriting history and what we know about how many taxa of dinosaurs that could fly. Aren't you excited about this new discovery? They've just discovered a new taxa? The article is about fifteen pages long, a bit complicated to read straight through to understand all the minute detail in one reading, unless you are a paleontologist familiar with all the vocabulary, but I am willing to send it to you if you are interested?
In any case, it was unreasonable for you to say that I was "dumb" or that it "was like pulling teeth." I first read the interview from CNN in the morning, then within a matter of hours obtained the complete article and immediately posted a brief summary of what I had read, then began to reread it again to understand it better - all within an eight hour or so time span. Yet during this time span, I received 10-20 condescending vulgar criticisms. If you are not interested in new discoveries in paleontology, then why are you reading and posting on this forum? Would you like me to download and email this interesting article to you so that you can have a firsthand experience of its factual content and interpret their findings yourself? This would certainly solve the problem of you just criticizing me for relaying the info to you quote per quote. Thank you.