Posts treating: "theropod dinosaurs"
Sunday, 01 May 2016
The first illustration of a hypothetical "pro-avis" by Pycraft, 1906Feathered non-avialan dinosaurs seem commonplace now, and it's hard to believe that there was a time, in living memory for some of us, when they were purely speculative. It makes sense, of course: once scientists realized (then realized again) that dinosaurs were the closest fossil relatives of birds, it was only natural to suggest that feathers had appeared in dinosaurs before they showed up in birds. To have a new type of [...]
As an Art Evolved member, I post a pair of my reviews here every so often, the 1st being positive & the 2nd being negative. I'd greatly appreciate you reading & voting "Yes" for said reviews in the bolded links below. Besides wanting to make sure said reviews give a good idea of what to expect, they need all the "Yes" votes they can get because 1) the 1st is for a great book that deserves more attention, & 2) the 2nd is outnumbered by opposing reviews (which don't give a good idea [...]
Estimating cranial musculoskeletal constraints in theropod dinosaurs. 2015. Royal Society Open Science.
Gape angles at optimal and maximum tension limit for (a) Allosaurus fragilis, (b) Tyrannosaurus rex and (c) Erlikosaurus andrewsi with muscle resting length at a gape angle of 3.0°.
A new study demonstratse that Tyrannosaurus, Allosaurus and Erlikosaurus show distinct differences in
This is currently free from the Palaeontology Online website.
Niedźwiedzki, G., Brusatte, S. L., Sulej, T., and R. J. Butler. 2014. Basal dinosauriform and theropod dinosaurs from the mid–late Norian (Late Triassic) of Poland: implications for Triassic dinosaur evolution and distribution. Palaeontology 57(6): 1121–1142 DOI: 10.1111/pala.12107
Abstract - The rise of dinosaurs during
ART Evolved: Life's Time Capsule [2014-07-28 00:09:00]
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(147 visits) NZ,US,TR,IN
This post was inspired by the Nostalgia Critic's "Top 10 Films Doug Hates But Everyone Else Loves" ( http://www.youtube.com/watch?v=8XG9ZQyExe4 ). It's nothing formal, just a list of what I (as a non-expert dino fan) think are the most annoyingly-popular (I.e. More popular than they should be, given the evidence) dino hypotheses in recent years (I.e. Post-2000) & why. Even still, I hope that at least some of you will get something out of it. As for why "Top 4", to quote Santa Claus ( [...]
courtesy of seaan
Many people seem to have missed the fact that one group of theropod dinosaurs HAVE adapted slowly, and are doing quite well in today’s environment. Birds ;)
What about the other dinosaurs?
Oxygen
If we could bring back Mesozoic dinosaurs, the lower oxygen content of the atmosphere would mostly be a problem for the
The evolutionary line from theropod dinosaurs is absolute. There is no question that this is one of the greatest stories that life on Earth has ever told us, But evolution is not linear; it’s chaotic. It’s bizarre. Along this theropod line, dinosaurs were experimenting – they were the evolutionary scientists of their time. One of
Dinosaurs are a varied group of animals of the clade Dinosauria. They first emerged during the Triassic period, 231.4 million years ago, and were the main terrestrial vertebrates for 135 million years, from the commencement of the Jurassic (about 201 million years ago) till the end of the Cretaceous (66 million years ago), when the Cretaceous–Paleogene annihilation event led to the annihilation of most dinosaur groups at the close of the Mesozoic Era. The fossil record points that birds [...]
....and the answer to the question we've all been wondering...what type of footprint would Poposaurus have left? It appears that Poposaurus probably could have left a Grallator-like track.
Farlow, J. O., Schachner, E. R., Sarrazin, J. C., Klein, H., and P. J. Currie. 2014. Pedal Proportions of Poposaurus gracilis: Convergence and Divergence in the Feet of Archosaurs. The Anatomical
Although I've mostly focussed on the Steve Kirk spectaculars in Dinosaur Worlds so far, the supplementary illustrations (or "small featured creatures") definitely merit closer inspection. Many of them are the work of James Robins, a skilled and rather under-appreciated artist whose meticulous, often surprisingly prescient approach deserves praise aplenty.Robins was one of the few artists working in the mid-'90s to depict theropod forelimbs in their correct 'neutral' position, as seen in the [...]
A University of Alberta researcher has identified some of the strongest evidence ever found that dinosaurs could paddle long distances.
Working together with an international research team, U of A graduate student Scott Persons examined unusual claw marks left on a river bottom in China that is known to have been a major travel-way for dinosaurs.
Alongside easily identified
ART Evolved: Life's Time Capsule [2013-03-28 02:19:00]
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(75 visits) Jurassic
This post was inspired by Holtz's "A Dinosaur Lover's Bookshelf" article ( http://connection.ebscohost.com/c/book-reviews/16928013/dinosaur-lovers-bookshelf ). It's nothing formal, just a list of what I (as a non-expert dino fan) think are especially notable dino sources (for better or worse) & why. Even still, I hope that at least some of you will get something out of it. 2 more things of note: 1) Just in case you were wondering, the sources aren't listed in any particular order; 2) [...]
Dinosaurs are a diverse group of animals of the clade Dinosauria. They first appeared during the Triassic period, approximately 230 million years ago, and were the dominant terrestrial vertebrates for 135 million years, from the beginning of the Jurassic until the end of the Cretaceous, when the Cretaceous–Paleogene extinction event led to the extinction of most dinosaur groups at the close of the Mesozoic Era. The fossil record indicates that birds evolved from theropod dinosaurs during the [...]
Academics at the Universities of Bristol, Yale and Calgary have shown that prehistoric birds had a much more primitive version of the wings we see today, with rigid layers of feathers acting as simple airfoils for gliding.
Close examination of the earliest theropod dinosaurs suggests that feathers were initially developed for insulation, arranged in multiple layers to preserve heat,
Happy September everyone! After our first three-month gap between galleries, we bring you the next gathering of stunning artwork - all about the fusion of prehistoric critters and pop culture! We had so much fun the first go around, it's time for our 2nd Pop Culture Gallery! If you would like to add your art to these talented folk, simply send Art Evolved your work and we will add it to this gallery! Our address is artevolved@gmail.com.Without further ado, ART Evolved's [...]
ALT-SOCIEDADE DE HISTÓRIA NATURAL [2012-07-27 09:48:00]
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(65 visits) Jurassic
O registo de dinossáurios terópodes do Jurássico Superior conhecido na Bacia Lusitânica inclui abundantes dentes isolados de dinossaurios terópodes recolhidos, sobretudo, em sedimentos do Kimmeridgiano médio ao Tithónico superior. A identificação de diversos morfotipos relacionados tanto a formas basais de grande porte como a táxones de pequenos coelurossáurios sugere uma maior diversidade entre estas faunas relativamente à conhecida actualmente com base em restos não [...]
Just a reminder to those who may have missed it or forgotten, tonight in Brixton I’ll be talking about my research on theropod dinosaurs and their feeding and hunting habits. Drop in to hear me, or to talk dinosaurs before or afterwards. All the details are
A newly found fossil of Sciurumimus albersdoerferi, which lived about 150 million years ago, provides the first evidence of feathered theropod dinosaurs that are not closely related to birds. The fossil is described in a paper published online on 2 July in the Proceedings of the National Academy of Sciences (PNAS). Because the new species sits deep within the evolutionary tree of theropods, the findings suggest that all predatory dinosaurs might have had feathers. In other words feathered [...]
A new species of feathered dinosaur discovered in southern Germany is further changing the perception of how predatory dinosaurs looked. The fossil of Sciurumimus albersdoerferi, which lived about 150 million years ago, provides the first evidence of feathered theropod dinosaurs that are not closely related to birds. The fossil is described in a paper published in the Proceedings of
Scott D. Sampson Specialist in ceratopsid and theropod dinosaurs, with a strong interest in the ecology and evolution of Mesozoic terrestrial ecosystems 1. What first got you interested or involved in your research field? Dinosaurs and paleontology have been a lifelong interest, beginning about age 4. It’s fair to say that I was geek from