First, show me a fossil elephant with feathers. I can show you fossil dinosaurs with feathers:
http://www.wired.com/images_blogs/wiredscience/2010/02/dinosaur_feathers_fossil2-660x432.jpg
Seems like anything found in amber is regarded as a dinosaur. Here’s a radical idea. Maybe there were birds living amongst dinosaurs. Also you have missed my point. Sticking feathers on a creature does not make it an ancestor of birds. Even if there were a feathered mammal in ancient times with feet like a chicken it does not prove ancestry any more than the platyus proves ancestry with the duck.
rossum;8756378:
Both have four limbs. In birds, the front two limbs are wings, rather than arms. Notice that the Velociraptor’s forelimbs are not used for walking, but are more like arms than legs. As for birds with tails, very early birds did
have bony tails, just have a look at
Archaeopteryx.
My three year old will identify a picture of a wing as a wing and a picture of a leg as a leg. They are completely different things. You are comparing apples with oranges.
Sorry that is old news. Archie is not a very early bird. He is now regarded as a completely different type of dinosaur Xiaotingia, and not an ancestor of birds after all.
blogs.discovermagazine.com/notrocketscience/2011/07/27/earliest-bird-was-not-a-bird-new-fossil-muddles-the-archaeopteryx-story/
The Tyrannosaur proteins, collagen IIRC, were sequenced and the best match was found to be chicken. A similar match was found later with proteins extracted from a Hadrosaur fossil. See
Biomolecular Characterization and Protein Sequences of the Campanian Hadrosaur B. canadensis
.
To quote the Abstract:
Molecular preservation in non-avian dinosaurs is controversial. We present multiple lines of evidence that endogenous proteinaceous material is preserved in bone fragments and soft tissues from an 80-million-year-old Campanian hadrosaur,
Brachylophosaurus canadensis [Museum of the Rockies (MOR) 2598]. Microstructural and immunological data are consistent with preservation of multiple bone matrix and vessel proteins, and phylogenetic analyses of
Brachylophosaurus collagen sequenced by mass spectrometry
robustly support the bird-dinosaur clade, consistent with an endogenous source for these collagen peptides. These data complement earlier results from
Tyrannosaurus rex (MOR 1125) and confirm that molecular preservation in Cretaceous dinosaurs is not a unique event. (emphasis added)
It probably was contaminated. See
sciencemag.org/content/268/5214/1192.2 for two letters on the subject. There were some very early mammals alive at the time, though their bones were smaller than the one tested. However, it is possible that some proto-mammal DNA got into the sample and contaminated it. Modern contamination is more likely.
The dino-bird theory is alive and well, with more confirmatory evidence appearing. Woodward’s result has not been duplicated, and is insufficiently supported to overturn Schweitzer’s results on both Tyrannosaur and Hadrosaur proteins.
rossum
Maybe T-Rex tasted like chicken.
But all this proves is that we all pick the scientist whose story suits our case. Clearly science is not a means of obtaining objective truth.