October 30, 2007

Dyno-nychus

10:28 am

Skull of Deinonychus

Halloween week seems like a good time to show off this Deinonychus skull I drew up a few months back. My coworker David Baccadutre was looking for a stylized skull (similar to the Titanophoneus in the HMNH logo) for a graphic to put on the side of his Mini Cooper, and after thinking about it for a bit, he decided a speedy little dromaeosaur would fit the bill. I did a couple sketches of the skull in 3/4 view, worked up the final drawing in Adobe Illustrator, and passed the artwork along to him.

He worked up the final graphic, “Dino’d by Matt Celeskey,” and had it printed up as a magnetic decal. A picture of the graphic in situ is shown below:

Dino'd by Celeskey

And here’s David with his spiffy new ride:

Dino'd by Celeskey

—Matt Celeskey.

October 28, 2007

The Boneyard #8

12:00 am

Greetings, dear visitor, and welcome!

You must surely be possessed of an intrepid soul to wander this far afield to-night, so close to All Hallows’ Eve. Surely you have heard the tales of strange happenings this time of year, when the world of the living is never closer to the world of the dead? On this night, unwary travelers might soon find themselves in very strange surroundings indeed!

I see by your expression that you care little for these stories. Superstitions told by fools to frighten the ignorant, you say? Hm. No doubt you are correct; these stories to tend to “take on a life of their own,” it is said, once they fall into the common imagination.

Still, a modicum of caution is never ill-advised, and I pray you let me be your guide for a short time along the path ahead. For, my traveling friend, your wanderings have led you deep into…

The Boneyard

See here, along these rocks beside the path? Yes, there appears to be some sort of writing, but these marks were made long before the hand of man ever touched this place. In truth, they were laid down ages before men had hands! Interpreting this ancient tongue is no mean feat, but I dare say they are imploring you to “GO BACK…GO BACK!!!” Go back, that is, more than 400,000,000 years past, when intricate lace-colonies of miniscule animals thrived in the Silurian seas. Let Christopher Taylor, at Catalogue of Organisms, take you back to the unspeakably ancient realm of the Graptolites.

This isn’t the only tale to be told by our Cataloguer of Organisms. Mr. Taylor also relates the tale of a most hideous experiment, wherein researchers have attempted to recreate the conditions by which plant sap can lethally ensnare animals…perfectly preserving their trapped corpses against the ravages of time!

Look, along the path! The dead are always close here…you can see by these tracks they passed across this very ground not 315 million years hence. Here one set of reptilian talons clawed at the muddy earth, there a smaller set scuttled away to hide. Neil Kelley, proprietor of microecos, can uncover more examples of these accursed footfalls, doomed to preserve a record of their maker’s walk along a beach for a geological eternity…

Speaking of footfalls, perhaps it would be best to pursue an alternate route. I have heard of several reports describing a giant beast sighted not far from this very spot, one who has been given the all-but-unpronounceable name of Futalognkosaurus. I implore you, do not seek it out this evening, for I do not relish the thought of explaining how you came to be trampled by some newly-described Dinosauria. If your curiosity is piqued by this enormous animal, I ask that you research it more thoroughly through the expert writings of Messrs. Kelley, or Miller, or Switek, or Baird. I hasten to add that the remains of a similar beast are now available for hazardless examination at the Sauropod Vertebrae Picture of the Week collective.

Of course, not all the animals who haunt The Boneyard are large in stature. Listen closely, and you may perceive the rustlings of much smaller spirits. PZ Myers presents an image of the archaic marsupial Sinodelphys, whose visage was revealed through the esoteric arts of the talented Carl Buell.

At this juncture you may perceive the enigmatic bones of wide-waisted therizinosaurs, compared with the similarly bizarre fossils of chalicotheres and giant ground sloths by Zach Miller of When Pigs Fly Returns. Monsters such as these have twisted the tongues and confounded the minds of men for many years, and I fear we must press on before we, too, become hopelessly engrossed with their anatomical eccentricities.

Ah, but I see another interesting puzzle awaits us. At Laelaps, Brian Switek examines the possibility of beings with human-like intelligence evolving from a bird-like dinosaur, Troodon, in his thoughts on the “Dinosauroid”. Whilst we are passing through ground traveled by Mr. Switek, it is best to keep a close eye out. One never knows when one might be stalked by a bear-dog or come face to face with the gaping maw of a rauisuchian

Look now above you—do you see the fluttering of black wings against the waning moon? These Eocene bats are quite like their modern counterparts, but, as Dr. Ryan of Palaeoblog informs us, they lack the ability to echolocate. They are quite harmless, I assure you. Still, it might be for the best to keep your head low until they pass.

I see by the figures up ahead that we are nearing the end of our walk through The Boneyard. Come closer, and rejoice! For not all the tales told in this strange place concern the dead. Ethical Palaeontologist Julia Heathcote relates her visit to the Annual Meeting of the Society of Vertebrate Paleontology, where men and women who spend their lives among the rocks and bones gather to share and celebrate their work. Another four part series from the Meeting may be viewed at Studio D’Arte Corvo.

Faithful traveler, we have at last reached the end of our wanderings together. Be wary in your future journeys, for, as you have seen, the living world is riddled with signs from the dead, in forms beyond all imagining, and in number far beyond measure. Heed them well, and you may find your travels from this point forward enriched by their ancient wisdom.

The Boneyard is fated to reappear within a fortnight’s time. Details of its whereabouts are soon to be revealed here.

—Matt Celeskey.

October 25, 2007

No. 1 with a Google

10:04 pm

David Ng at The World’s Fair has cooked up an interesting little meme: uncover five phrases which, when typed into Google, return your blog as the number one result. Poking through my referral logs, I came up with the following:

  • invertebrates to invade land
  • venom of our forefathers
  • history of Coelophysis
  • carboniferous bicycle seat
  • grotesquely simplified bifurcation

…and, appropriately enough for the week before Halloween:

  • haunted museum of natural history

Earlier this month, a reader pointed out a two-word search that would be an HMNH googlewhack, ruined only by the technicality that Google doesn’t link to either term in the answers.com dictionary. Still, in the interest of preserving the Hairy Museum “googlejack”, I won’t repeat the phrase in this post, but you can search it out yourself here.

—Matt Celeskey.

October 23, 2007

Bring out your dead…

9:46 pm

…for the 8th edition of The Boneyard, on display here at the Hairy Museum this Saturday. Submit any and all paleontology-type posts to deadanimaldesign@hmnh.org.

—Matt Celeskey.

October 21, 2007

Phytosaur portraits

5:36 pm

The phytosaur Parasuchus

As I’ve hinted at in previous posts, I’m thinking a lot about phytosaurs lately. These Late Triassic predators are (literally) looming large in a project I’m involved with for the day job, and I’ve had the sketchbook out in an attempt to wrap my head around the overall proportions and life appearances of these ancient archosaurs.

The first thing you tend to notice about phytosaurs is how much they look like modern crocodiles. Technically, crocs are the closest living relatives of phytosaurs, but there are so many animals between the two groups that are distinctly un-crocodile-like in overall form that their similarities are likely due to convergence more than kinship.

Still, the overall resemblance between the two groups is striking, and oftentimes crocodilians become the go-to substitutes for reconstructing phytosaurs. Some restorations are more clearly crocodile-based than others, but nearly all (mine included) show some degree of crocodilian influence. I suppose this could be considered artistic laziness (or, more charitably, artistic tradition), but I think that a distant but demonstrable relationship coupled with convergent forms and habits make a certain degree of crocodile-emulation justifiable. However, if any phytosaur-workers out there have other ideas about how these animals should look, I’d be thrilled to incorporate any comments into future restorations.

The main way that you can tell if an artist has drawn a phytosaur or crocodile is by looking for the nostrils. The nostrils of crocodiles are situated at the tip of the snout, while in phytosaurs, the nostrils are farther back, in some cases just in front of their eyes. The phytosaur at the top left of this post is Parasuchus (“near crocodile”), one of the earliest and most primitive (or, to be phylogenetically correct, least derived) forms. The nostrils of Parasuchus, while further back than any crocodile, lie further forward than they do in more advanced phytosaurs, like Angistorhinus, pictured below.

The head of Angistorhinus

Angistorhinus (“narrow snout”) was a contemporary of Parasuchus, but was more advanced in at least two obvious respects. First, the nostrils of Angistorhinus are situated much further back on the snout, raised in a little hump just in front of its eyes. Secondly, the teeth of Angistorhinus are differentiated depending on their location in the mouth. At the front of the jaws, the teeth are large and stout, built for grabbing and crushing prey. Teeth along the main length of the jaw are small, slender cones, excellent for catching small, slippery prey and working it toward the back of the throat. At the back of the jaw (and difficult to see in this closed-mouthed view), the teeth are flattened triangular wedges, well-suited to shearing off chunks of flesh from animals too large to swallow whole. This heterodont (“different-toothed”) condition presumably helped Angistorhinus tackle a wider variety of prey than than the simpler-toothed Parasuchus.

This second sketch is the first study for a series of portraits, restoring the faces of phytosaurs known from New Mexico and the U.S. Southwest. Focusing on the heads of these animals is probably the most accurate way they can be portrayed, as North American phytosaurs are known from an abundance of well-preserved skulls but, sadly, very few examples of reconstruction-ready, articulated postcrania. These sketches will end up becoming full color paintings for an interpretive display at the day job. Throughout the process, however, I hope to share more of my preliminary drawings and sketches with readers here.

—Matt Celeskey.