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Thread: New Bird/Dinosaur intermediate species found

  1. #1
    tWebber shunyadragon's Avatar
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    New Bird/Dinosaur intermediate species found

    New species found that is an intermediate between bird-like dinosaurs and birds that is more like a bird with attributes of a dinosaur.

    [cite]=https://www.nationalgeographic.com/science/2018/09/news-new-species-fossil-bird-dinosaurs-flight-evolution-paleontology/]

    'Messy' New Species of Dinosaur-Era Bird Discovered
    The odd animal, named Jinguofortis perplexus, displays an unusual mosaic of bird and dinosaur features.

    BY JOHN PICKRELL
    PUBLISHED SEPTEMBER 24, 2018

    Paleontologists in China have discovered a new species of fossil bird that they say reveals a pivotal point in the evolution of flight, when birds had lost the long bony tail seen in dinosaurs such as Tyrannosaurus and the early bird Archaeopteryx, but before they had developed the fan of feathers on a shortened tail seen in flying birds today.

    The 127-million-year-old species, which they have named Jinguofortis perplexus, retains other features of its dinosaur ancestors, such as claws on the fingers of its wings, a jaw with tiny teeth rather than a beak, and a fused shoulder girdle. That last trait is seemingly poorly adapted to flight, hence the name “perplexus.” (Read more about the evolutionary link between dinosaurs and modern birds.) [/cite]
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  2. #2
    tWebber shunyadragon's Avatar
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    Another important Intermediary species found in the Archaeopteryx avian-dinosaur group of species demonstrating the progressive bird like characteristics of the species over time.

    Source: http://www.sci-news.com/paleontology/archaeopteryx-albersdoerferi-06544.html



    Paleontologists Discover New Species of Archaeopteryx

    Archaeopteryx was first described as the ‘missing link’ between reptiles and birds in 1861 — and is now regarded as the link between dinosaurs and birds. Only 12 specimens have ever been found and all are from the late Jurassic of Bavaria, Germany, dating back approximately 150 million years. Now, Dr. Martin Kundrát from the University of Pavol Jozef Šafárik and co-authors have identified a new species of Archaeopteryx — named A. albersdoerferi — that is closer to modern birds in evolutionary terms.

    Using synchrotron microtomography, Dr. Kundrát and colleagues examined one of 12 Archaeopteryx specimens, known as ‘specimen number eight.’

    “This Archaeopteryx individual is physically much closer to a modern bird than it is to a reptile,” the paleontologists said.

    “Therefore, it is evolutionary distinctive and different enough to be described as a new species — Archaeopteryx albersdoerferi.”

    Some of the differing skeletal characteristics of Archaeopteryx albersdoerferi include the fusion of cranial bones, different pectoral girdle (chest) and wing elements, and a reinforced configuration of carpals and metacarpals (hand) bones.

    These characteristics are seen more in modern flying birds and are not found in the older Archaeopteryx lithographica species, which more resembles reptiles and dinosaurs.

    Specimen number eight is the youngest of all the 12 known specimens by approximately half a million years. This age difference in comparison to the other specimens is a key factor in describing it as a new species.

    “By digitally dissecting the fossil we found that this specimen differed from all of the others,” said co-author Dr. John Nudds, from the School of Earth and Environmental Sciences at the University of Manchester.

    “It possessed skeletal adaptations which would have resulted in much more efficient flight.”

    “In a nutshell we have discovered what Archaeopteryx lithographica evolved into — i.e. a more advanced bird, better adapted to flying — and we have described this as a new species of Archaeopteryx.”

    “This is the first time that numerous bones and teeth of Archaeopteryx were viewed from all aspects including exposure of their inner structure,” Dr. Kundrát said.

    “The use of synchrotron microtomography was the only way to study the specimen as it is heavily compressed with many fragmented bones partly or completely hidden in limestone.”

    “Whenever a missing link is discovered, this merely creates two further missing links — what came before, and what came after,” Dr. Nudds said.

    “What came before was discovered in 1996 with the feathered dinosaurs in China. Our new species is what came after. It confirms Archaeopteryx as the first bird, and not just one of a number of feathered theropod dinosaurs, which some authors have suggested recently. You could say that it puts Archaeopteryx back on its perch as the first bird.”

    The discovery is reported in the Historical Biology, an international journal of paleobiology.

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    Glendower: I can call spirits from the vasty deep.
    Hotspur: Why, so can I, or so can any man;
    But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:

    go with the flow the river knows . . .

    Frank

    I do not know, therefore everything is in pencil.

  3. #3
    tWebber lee_merrill's Avatar
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    Well, that would be evidence for macro-evolution. The evidence against macro-evolution in the fossil record is that we see long periods of stasis, followed by the sudden appearance of new forms.

    Blessings,
    Lee
    "What I pray of you is, to keep your eye upon Him, for that is everything. Do you say, 'How am I to keep my eye on Him?' I reply, keep your eye off everything else, and you will soon see Him. All depends on the eye of faith being kept on Him. How simple it is!" (J.B. Stoney)

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