Showing posts with label deinonychus. Show all posts
Showing posts with label deinonychus. Show all posts

Monday, January 11, 2016

Happy 2016 from LITC

LITC 2016
Ink on hot pressed watercolour paper, 150 x 150 mm.

A little late, but not yet too late. Happy New Year to our readers from David (Anatotitan/Edmontosaurus), Asher (Dilophosaurus), Marc (Deinonychus), and me (Diplodocus). 

I made very few contributions to the blog in 2015, owing largely to moving house and a number of rather personal issues, but I very much hope that this piece is a good beginning to a more fruitful year ahead (opening the image out in a new tab for a closer view is once again recommended, *cough*). Oh, and I just wanted to mention that the basis of the boat's design was purloined and adapted from an illustration by Franklin Booth.

Many thanks to Marc for holding off his first VDA post of 2016 (a cracking one featuring Ely Kish once again, hurrah!) to allow me to make this 'opener', so to speak!


Thursday, January 9, 2014

'Top hat' Deinonychus

Pencil and gouache on recycled paper, 95mm diameter.

Prompted by Marc’s comment on my New Year post, Deinonychus with a ‘top hat’ feathery crest. I began fully intending to do a quick silly sketch, but it took a peculiarly serious turn.

(Note that the face isn't scaly but is skin with a pebbly, scale-like texture, akin to the faces of cormorants or the combs of fowl.)

Enjoy.
 

Monday, January 6, 2014

Happy New Year

Sepia ink and gouache on grey toned Strathmore paper, 144mm diameter. Image can be opened in a new tab for full view.

  

Not as prompt as I would have wished (prompt, me? The very idea...), but Epiphany is still a good time to wish all of our readers a very happy 2014 from the Chasmosaurs team. Regular readers will already be familiar with the four saurian portraits of the blog authors, but should you need a reminder, you may like to revisit last year's New Year greeting.

Happy New Year!


Friday, June 28, 2013

A bipedal Apatosaurus and a Deinonychus

Bipedal Apatosaurus. Sepia ink, sepia powder, coloured pencils, and gouache on recycled paper 278 x 190mm.
Inspired by Mike Taylor's article on the probability of bipedal sauropods and by Scott Hartman's accompanying skeletal on the Walking with Dinosaurs blog. This drawing is another of those curious things which should serve more as a study, but which I nevertheless spent too long working on and eventually 'lost my way' with. One of the perils of being obliged to work on something at sporadic intervals.

A not dissimilar fate befell this Deinonychus study.

Deinonychus. Sepia ink, coloured pencils and gouache, sketchbook page.
Inspired, of course, by birds of prey in general, I made a conscious effort of bulking up its feathers much more than my earlier attempts, and aiming for a yet smoother, more avian silhouette (it suddenly occurs to me how long ago I actually began this study, as it went on to form the basis for Marc's Deinonychus portrait in the New Year greeting I completed back in January). I think perhaps its front third is fairly respectable, which perhaps is just as well, since that third eventually made its way upon a garment after some persuasion.

I also note that the Apatosaurus features what might be considered my signature 'dappled leaves' markings which I seem to apply on all and sundry when I'm not thinking too hard about coloration. I ought to devise something with which it can alternate...

N

Friday, January 4, 2013

Happy New Year



A little late in the proceedings, but not yet too late: a very happy New Year to all our readers from the Love in the Time of Chasmosaurs team; counter clockwise from right: David ('Anatotitan'), Asher (Dilophosaurus), Marc (Deinonychus) and me (Diplodocus).

I do recommend opening the image in a new tab for best viewing.

I would have liked to do more to this, but was obliged to call it finished, otherwise it might be March by the time I get to post it. It has already taken far longer than the rather lacklustre results would seem to warrant. I've taken a few liberties with the scale, of course (what Marc calls 'semi-authentic scale'). Nevertheless, I feel especially sheepish to be appearing so prominent, given that I'm the most ignorant and least qualified of the team. Perhaps I shall do another version someday which is more reflective of everyone's actual capacities...

Happy New Year!

Monday, September 10, 2012

Vintage Dinosaur Art: Rourke's Deinonychus

deinonychus rourke

There's that smell in the air... it's time to dip back into the paleoartistic publications of Rourke publishing. It's hard to believe that it's been three months since the last visit to the series: those were the halcyon days before Marc blew our minds with an explosion of Sibbick-itude heretofore unseen on the web, then followed it up with an equally epic exploration of Zdeněk Burian.

Now, we'll come back down to Earth and the muddlings of work-a-day illustrators with a 1984 publication devoted to the poster-child of the Dinosaur Renaissance, Deinonychus, the theropod who so ably served as the world's favorite dromaeosaur until that greedy little usurper wrought by Crichton and Spielberg pounced onto the scene. These scans were kindly provided for our pleasure by Terry Thielen. Even without the publication date provided, we'd have a rough idea of where we are; the first spread is a clear depiction of pronated, ready-to-dribble-a-basketball theropod hands, of the sort that makes the modern, discerning dinosaur fan cringe.

deinonychus rourke 1

Illustrator Roger Payne is middle-of-the-road among the Rourke stable; nothing too daring here, with bright colors and de rigeur plain green color schemes for his dinosaurs. Feathers are absent, naturally. But Deinonychus is an active predator, chasing after his prey, as with this hapless Psittacosaurus, and in this he fits squarely within the renaissance ideal of a warm-blooded, speedy killer. The animals were roughly contemporaneous, though they hail from North America and Asia, respectively.

deinonychus rourke 2

Attention to paleoecology is a hallmark of these titles, as anachronisms tend to be fairly minor. Here, the titular theropod does his business in an environment that suitably passes for a hot, tropical floodplain. There are some distant mesas as well, because, well, what in the heck else are you going to stick on the horizon? (Note: check comments for some discrepancies noted my Mike Keesey, which I did not bother with or pay attention to in my haste to finish up this post).

deinonychus rourke 3

Rourke titles tend to end one of two ways: in death or slumber. Fearsome Deinonychus gets the latter. It's actually sort of notable: besides a fellow who goes by the initials GSP, there were not many images of theropods at rest in the paleoart canon at this point. Here, those pronated hands rest atop one another in the manner of a sleeping dog; poor thing lacks a proper coat of feathery integument and hands arms that fold up in the fashion of the animal's extant relatives, the better to tuck a cold nose into.

deinonychus rourke 4

As always, browse the Flickr Vintage Dinosaur Art group for much more saurian goodness.

Previous Rourke books featured here:
Tyrannosaurus (George Sheehan)
Ankylosaurus (Bernard Long)
Brontosaurus (Colin Newman)
Iguanodon (Bernard Long)
Triceratops (John Francis)
Pteranodon (Doreen Edwards)
Allosaurus (Doreen Edwards)

Thursday, December 8, 2011

Welkom in het DinoBos!

I happened to be back in the Netherlands earlier this week. As a bit of an early birthday present, my girlfriend (yes - really) paid for my entry into DierenPark Amersfoort, a zoo in, er, Amersfoort. Although I always do like a good zoo, DierenPark Amersfoort had another draw for me - a large area dedicated to life-size fibreglass dinosaurs known as the 'DinoBos' (or 'Dino Forest'). What self-respecting dinosaur geek could possibly resist such an attraction? And so off I went, taking far too many photos. Fortunately, the place was pretty empty. Unfortunately, it was also bloody cold. Still, some of the models were really rather impressive.

I get acquainted with a Triceratops/umbrella stand.






















The DinoBos is arranged as a circuit, the models being presented in roughly chronological order (that is, according to when the real animal was alive) starting in the Devonian. Or Devoon, as it apparently is in Dutch. Of course, the only animal from the Devonian present was the weirdo evil fish Dunkleosteus, with a model of a shrunken (or juvenile) fishy plonked rather unceremoniously in a small pond. Except the pond had filled with leaves, so the rather surprised-looking creature had the appearance of having been dumped in the middle of the woods and left to die. It's one of those occasions where one can't help but imagine that the attraction bought a load of models, noticed one of them was a fish and thought "what in holy hell are we going to do with THIS?"
















Of course, things picked up when it came to the dinosaurs themselves (for one thing, they look a little more suited to their woodland habitat). As a kid, I visited Blackgang Chine and the Dinosaur Park in Norfolk on a number of occasions. I can't speak for what the latter's like these days, but it's safe to say that whenever anyone mentions fibreglass dinosaurs (as they are often wont to do at the trendiest parties) I always picture the hilariously bad, 1970s creations from Blackgang. Therefore, the rather more modern-looking models at DierenPark Amersfoort (or DPA, as I'll be calling it from now on, thanks) came as something of a pleasant surprise. Particularly impressive were the sauropods because, well, they were life-size sauropods. And one of them was Giraffatitan.






















"It's...it's a dinosaur!"






















Blimey, that's big. And look - it doesn't have elephant feet! Equally awesome was the Diplodocus. Perhaps they were a little overzealous in giving the animal a slimline neck, but otherwise the model was quite beautiful, from its dermal spines to its whiplash tail and graceful poise. The neck was erect, too (something that would no doubt make the SV-POWsketeers happy).






















There was one serious plague upon these models - BUNNY HANDS. Unfortunately, every theropod had its hands orientated in the 'classic' palms-down style, which was a real shame as they were often rather good otherwise (see Albertosaurus and Tyrannosaurus below).

































Bizarrely, while Coelophysis was modelled with a funky hairstyle, a Deinonychus pair were completely naked. This might have something to do with the old palaeoart meme of depicting "Syntarsus" (aka Megapnosaurus) with a 'badass mohawk' - some have argued that Megapnosaurus is a junior synonym of Coelophysis. In any case, it's a bother that the Deinonychus weren't feathered as they featured in the only scene with dinosaurs properly interacting - in this case, attacking Iguanodon. Rather anachronistically, it should be said (what happened to good old Tenontosaurus, the obligatory long-tailed buffet?), but it was executed quite well.

































Interspersed among the nicely-sculpted static models were a smaller number of shabbier, rubbery-looking things that ocassionally spasmed with movement. I suppose it's good for keeping kids interested, but they inevitably ended up sticking out like a whole sad bunch of grey sore thumbs. Particularly goofy-looking was the Herrerasaurus (below), although it was also one of the most mobile. Just look at those eyes. The eyes alone!

















Nevertheless, terrible and broken animatronics couldn't sour what was otherwise a very pleasant woodland jaunt beside a series of looming recreations of extinct animals. There's a surprising variety of them on offer here, too - besides the usual suspects, there are such unusual subjects as Maiasaura and Scelidosaurus (below), while the forest setting gives a suitable air of adventure and discovery. Of course, the rest of TPA is excellent too, with a surprisingly wide range of (actual living and breathing) animals that even includes Rhinoceros unicornis (with a baby born this year). It's well worth a visit.
































And finally...here's one for Heinrich Mallison. (Sorry it's a quadruped, Heinrich...)




Wednesday, May 11, 2011

A Splendidly Adorned Deinonychus

About a month ago, I shared one of Paul Heaston's recent pieces in a Mesozoic Miscellany post, an ink drawing of Yangchuanosaurus. Lately, he's been uploading new color versions of his illustrations, including this beautiful Deinonychus. Head over to his set of dinosaur artwork and enjoy more of his reconstructions. If you want to see his dinosaurs in person, head to San Antonio, Texas, where he works for Dinosaur Quest.

deinonychus color
Illustration by Paul Heaston, via Flickr.

For more of Paul's work, follow him at Three Letter Word for Art and take a nice, long look at his really impressive portfolio.

Tuesday, February 22, 2011

Stephen Czerkas in Discover, 1989

If you've been following this blog for a while, it probably won't come as a shock to learn that I collect old magazines that feature dinosaurs. Many antique shops have stacks of vintage magazines, and those covering dinosaurs in some way make up a decent portion of my "to scan" stack.

One of these recent acquisitions was an issue of Discover from March of 1989, featuring a profile of Stephen Czerkas by long-time dinosaur writer Don Lessem, roughly coinciding with the publication of Czerkas's book, My Life with Dinosaurs. Czerkas was an up-and-coming dinosaur researcher and sculptor who had done creature design on the 1978 B-movie Planet of Dinosaurs. Lessem's article focused on Czerkas as a paleontology outsider, one of those researchers who has knowledge, but not the degrees to show for it.

Plenty of paleontologists arrive at their profession by unconventional routes within or without of academia, and have made valuable contributions to the science. As in any field of study, those scientists have an uphill battle and face greater scrutiny - and occasionally bias - when presenting their ideas to their peers.

Stephen Czerkas with Deinonychus models

Preceding the article is the above photo of Czerkas in his workshop. It's striking just how similar these Deinonychus models are to what, just a few years later, would be called Velociraptor in Jurassic Park (a subject Brian Switek touches on today at Dinosaur Tracking). The movie wasn't even in production yet, and I can't find any connection between Czerkas' work and that of Stan Winston Studios, who created the movie's villains. But as Czerkas is not listed as a consultant on the movie, this may be a simple case of convergent evolution.

Reading this article in 2011, it's impossible not to view it through glasses stained by the "Archaeoraptor" fiasco of a decade ago. Czerkas's place in the history of paleontology will forever be connected with the controversy; google his name and you'll turn up droves of creationist blogs and websites that attempt to discredit evolutionary theory with "Archaeoraptor," the faked "missing link" between dinosaurs and birds.

Czerkas and his wife, Sylvia, bought "Archaeoraptor" for their Dinosaur Museum in Blanding, UT, promoting it to National Geographic, who had an exclusive story planned about its impact on our understanding of bird evolution. The problem was, the fossil was a mashup, eventually revealed to have been composed of Yanornis, Microraptor, and another critter. What makes the Czerkases' championing of the fossil infuriating rather than sad was that they didn't listen to Phil Currie and Tim Rowe's concerns about its legitimacy. Apparently blinded by the coming glory, they pushed on. The story was published. The fossil was analyzed further. It was discredited, and Czerkas ended up apologizing for his "idiot, bone-stupid mistake."

"Archaeoraptor" was an avoidable controversy, and one of its most annoying consequences was that it offered another arrow for the creationist quiver. It's a flimsy arrow, as all of their arrows are. The problem is the size of the quiver and the amount of time it takes to demonstrate the weakness of their many arguments. That "Archaeoraptor" is used at all baffles me. It's a clear indication that many creationists simply don't care about the rules of logic. "Archaeoraptor" was embarrassing for the paleontological community. For a minute. Once other scientists took a good look at it, it became a victory which shows why science is such a powerful tool for understanding our world: it has built-in mechanisms to remove bias and to correct mistakes. Want to poke fun at "arrogant evolutionists" for a mistake? Fine. I understand schadenfreude. It's fun. But it seems counterproductive to slam a group of people for their human fallibility when your own faction happens to be populated by fallible humans, too. That's the kind of thing that comes back to bite you on the proverbial rear end.

"Archaeoraptor" also serves as a lesson in the dangers of the black market fossil trade. In a 2002 article about "Archaeoraptor," paleontologist Kevin Padian explained to National Geographic how the tragic tale started, and it's such a perfect summation of the thorny issue, it deserves to be quoted at length here.
"The lesson in this should be the importance of conserving fossils and protecting them," said Padian. "Chinese villagers who found the specimen don't make a lot of money, and they don't know what these animals look like. There was no hoax. These are poor people trying to make a little extra money by selling fossils on the black market."

It's illegal to export fossils out of China, but a thriving black market exists, driven by poverty, powered by bribery, and feeding a seemingly inexhaustible desire for fossils among hobbyists.

Huge quantities of fossils are illegally excavated and smuggled out each year. And no wonder; the Archaeoraptor fossil sold in the United States for $80,000.

This is an internationally important region," said Padian. "The workers there are very poor; if they were better rewarded for working with scientists there would be no need to enhance the fossils, or for a black market at all. The international community needs to take steps to protect these fossils."
Looking back on Lessem's article twenty-odd years later, Czerkas's career has unfortunately done little to raise the general respectability of non-credentialed paleontologists. Oddly enough, even though "Archaeoraptor" never became the crown jewel in his museum and was a source of great embarrassment, it is featured prominently in Cerkas's anti-BAD* essay at the museum's site [PDF]. It lays out his view, which holds that dromaeosaurs aren't dinosaurs at all, and the fact that the opposite is the consensus is a figment dreamt up by cladists.

I suppose I should close on a happier note, though. Czerkas may not have been involved with Jurassic Park, but he has stamped his name on celluloid history. The early 80's Harryhausen-esque B-movie Planet of Dinosaurs included his model work. Here's a sample of it.



* "Birds Are Dinosaurs"

Thursday, April 29, 2010

Playmobil Dinosaurs

So, apparently Playmobil released a dinosaur series in 2008. I had no idea, and I have to admit: they're durned cute. If you're into expensive toys, check 'em out here.

Dynoneichus
Deinonychus

Spinosaurus
Spinosaurus

Triceratops
Triceratops

All images by TimSpfd, via flickr.

Friday, November 13, 2009

Paper Dinosaurs


Edward Drinker Cope's reconstruction of Laelaps, from PAPER DINOSAURS

The Linda Hall Library of Kansas City, MO hosts a very cool on-line exhibit called Paper Dinosaurs. It is well-worth a few minutes of your time. It's chronologically organized, and all of the images have nice, long descriptions.

From the site:

In 1996, the Linda Hall Library mounted an exhibition of original printed materials related to the history of dinosaur discovery. On view were most of the classic papers of dinosaur lore, including original publications by Gideon Mantell, Richard Owen, Othniel Marsh, Roy Chapman Andrews, and a host of others; there were forty-nine items in all. The original exhibition ran from October 17, 1996 through April 30, 1997.
There is a lot of great stuff featured here, from the iconic, such as Robert Bakker's Deinonychus, to the obscure. It's also a good primer on the colorful history of dinosaur paleontology (a subject I fully intend to write more on in the future). If you'd like to order a copy of the catalog from the original exhibition, it is available from the library for the reasonable sum of twelve US dollars.

Tuesday, September 15, 2009

Raptors Don't Grow On Trees

A few years ago, Phil Manning at the University of Manchester used a robotic simulation of the dromaeosaur sickle claw to determine how it may have been used - he wanted to test the assumption, popularized by Jurassic Park, that it was a disemboweling tool, perfect for slashing through the bellies of prey dinosaurs. The robo-claw wasn't actually able to slash through the flesh of a pig's carcass; rather, it punctured it. This led to the conclusion that raptors most likely used the claws to maintain a grip on their larger prey while ripping them up with their teeth, leading to a pretty awful, painful death by bleeding.

Manning is continuing to explore the use of dromaeosaurs' claws, and a recent study of the claws of their hands, published in the newest, dino-centric issue of the Anatomical Record, suggests that they could have supported their weight when climbing. In particular, the paper discusses the manual (hand) claws of Velociraptor mongoliensis, whose inner curve had an arc of 127 degrees, which falls between the upper limits of perching bird claws and the lower limits of trunk-climbing bird's claws. Manning also refers back to a 1969 study of Deinonychus antirrhopus, another small dromaeosaur; their pedal (foot) claws had an arc of 160 degrees, which is in line with the upper range of today's trunk-climbing birds, like woodpeckers or the nuthatches which frequent my suet block. Further studies will be devoted to Deinonychus foot claws, of which we have more good specimens than those of Velociraptor.

So the dromaeosaurs, at least the smaller ones, may very well have used their claws to climb trees as well as hang on to their dinners. Lacking any proper paleoart depicting this fascinating new idea, here's an incredibly crappy, dashed-off, proportionally inaccurate one from yours truly.
Raptor in a Tree
Image by me, via flickr