Showing posts with label Member- Mo Hassan. Show all posts
Showing posts with label Member- Mo Hassan. Show all posts

Friday, February 4, 2011

Speed Paint: Pink-headed duck and Red-crested pochard: who would win in a fight?



Pink-headed duck and Red-crested pochard: who would win in a fight?
Speed Paint in MS Paint by Mo Hassan


On left:
Pink-headed duck
Rhodonessa caryophyllacea (Latham, 1790)
Anatidae; Anseriformes; Aves; Chordata

On right:
Red-headed pochard
Netta rufina (Pallas, 1773)
Anatidae; Anseriformes; Aves; Chordata

Created using MS Paint in under half an hour, 4th February 2011.
Inspired by the title and content of the Tetrapod Zoology post: Pink-headed duck and Red-crested pochard: who would win in a fight?

Not strictly palaeo-related, but who cares? :P

Monday, January 24, 2011

Drawing Mega-Mammals

Last month, I spent some time in my beloved Natural History Museum (not mine, of course, but it's mine in the sense that I've spent a rather large chunk of my life within its walls) drawing some of the mammals. I was spurred into it by the need to create new content for the (then) upcoming elephant gallery.



American Mastodon skeleton
Mammut americanum (Kerr, 1792)
Mammutidae; Proboscidea; Mammalia; Chordata
Line drawing in graphite pencil
Drawn from mounted specimen at Natural History Museum, London, December 2010

I decided to draw the American mastodon because the skeleton was in a convenient place to sit/stand, and it was fairly quiet. Although the mammal halls in the NHM are usually fairly popular, few people go to the 'dead end' that is made up of a woolly mammoth Mammuthus primigenius skull, a Stegodon ganesa skull, and the mastodon skeleton.



American Mastodon in tundra scene
Marker pen on clear acetate, with photo backdrop (by Billy Lindgrom at Wikimedia Commons)
Drawn from mounted specimen at Natural History Museum, London, December 2010

I then thought I'd try something different; I brought along some clear acetate sheets, like those used for overhead projections, and marker pens. After completing the pencil drawing, using that and the actual specimen as a guide, I drew an outline of the mastodon as it would be with all the layers of muscle, fat, and fur, including the boneless fillet that is the trunk. I was somewhat happy with the end result, but thought of superimposing a tundra backdrop afterwards.



Moropus elatus Marsh, 1877
Chalicotheriidae; Perissodactyla; Mammalia; Chordata
Line drawing in graphite pencil
Drawn from mounted specimen at Natural History Museum, London, December 2010

Moropus isn't an elephant, or even a proboscidean, so it didn't end up in the ART Evolved gallery. This is the first place outside my sketchpad that this piece has been seen. Moropus was a chalicothere, a member of odd-shaped herbivorous mammals with relatively long forelimbs and short hindlimbs. They have well-developed claws on all limbs, and possibly used them to pull down leafy branches from up high to feed on. I didn't produce an acetate reconstruction of Moropus, but I might one day.



Paleoparadoxia tabatai Tokunaga, 1939
Paleoparadoxiidae; Desmostylia; Mammalia; Chordata
Line drawing in graphite pencil
Drawn from mounted specimen at Natural History Museum, London, December 2008

As you can see, I did this drawing over 2 years ago, whilst I worked at the library at the NHM. Paleoparadoxia is a member of the order Desmostylia, within the group of orders known as Afrotheria. The Afrotheria consist of six extant (surviving) orders: Proboscidea (elephants); Hyracoidea (hyraxes); Sirenia (manatees and dugongs); Tubulidentata (aardvarks); Afrosoricida (tenrecs and golden moles); and Macroscelidea (sengis, or elephant shrews). There are also a few completely extinct orders, one of which was the Desmostylia.

They mostly lived around the northern Pacific Ocean, with localities mostly in Japan, western Canada and the western United States. Several genera have been named, and although it is believed that all desmostylians were aquatic to some extent, some were more ocean-going than others. The main evidence for such a conclusion is bone density, which reveals just how heavy and able to sink or float the animals were.



Paleoparadoxia tabatai life reconstruction
Graphite pencil illustration
Drawn from mounted specimen (skeleton) at Natural History Museum, London, December 2010

Whilst at the Museum on the day I drew the rest of the specimens, I thought I'd do a life reconstruction of this desmostylian. I'm not very happy with the way the face has turned out, as I don't think I've drawn the teeth accurately at all. In my defence, the specimen on display is quite poor, and a lot of liberties have to be made as to tooth count and position of limbs.



Phiomia serridens Andrews & Beadnell, 1902
Phiomiidae; Proboscidea; Mammalia; Chordata
Graphite pencil illustration Drawn from specimen at Natural History Museum, London, December 2010

And this is the other new piece I submitted to the elephant gallery. Phiomia was a small, early proboscidean with a short trunk. A skull is on display next to a reconstructed model of it. My own reconstruction, therefore, was unnecessary. Also, I only had the skull to work from.

May I take this opportunity to remind you of the official The Disillusioned Taxonomist Facebook group, and the first volume of The Disillusioned Taxonomist in print form, covering posts from mid to late 2008.

Monday, June 28, 2010

Prehistoric Animal Alphabet



Prehistoric Animal Alphabet
Colour pencil illustrations
June 2010

Above is a collection of twenty-six illustrations, each a stylised letter of the alphabet. They are styled to look like various prehistoric creatures, some are based loosely on existing types, others completely made up. All of them have been given a binomial, with each name beginning with the letter the animal represents, and a bit of geological/biological 'information' has been made up to go with each animal. To reiterate, none of these animals actually exists or have ever existed, and I cannot guarantee that all the names I have given them are unique and not synonyms (technically these are all nomina nuda, but anyway, enjoy...)



Alpharaptor aetonyx (meaning 'eagle-clawed "A" plunderer) was a purple-feathered theropod from late Cretaceous China. It had large, eagle-like talons on all four limbs and preyed upon small birds and mammals.



Betasaurus beryllinus ('beryl-like "B" lizard) was a medium-sized hadrosaur from late Cretaceous Alberta. It lived in large herds to defend itself from large tyrannosaurs, and fed upon cycads. The B-shaped head enabled Betasaurus to produce a sound somewhat like a euphonium.



Cyanosuchus cadaverinus ('corpse-like blue crocodile', from the colour and odour of the fossil remains) was a mesoeucrocodylian from Early Cretaceous southern England. It was a fish-eater and swam in freshwater lagoons.



Deltaceratops dipsomanius ('alcoholic "D" horned face') was a protoceratopsid from Late Cretaceous Mongolia. It lived in deserts and fed upon whatever ground cover it could find. Its specific epithet 'dipsomanius' was derived from the sprawled position of the type specimen.



Epsilonodactylus erebennus ('gloomy "E" finger) was a pteranodontid pterosaur from Late Cretaceous Argentina. It was discovered on a particularly gloomy day. It was a fish-eater, being most partial to sharks. It is thus believed to be an oceanic wanderer, like today's albatrosses.



Falcunguis ferox ('ferocious sickle claw') is only known from the claws and phalanges of two digits. It is believed to be an ancestor of the therizinosaurs, due to its geological and geographical distribution in Early Cretaceous China.



Gammasaurus geophagus ('earth eating "G" lizard) was a small coelurosaur with a very long tail which curved backwards over its body. It used the elongated tail to carry leaves which it used to shade itself in hot weather. It dates from the late Jurassic of Bavaria and ate large subterranean insects. Fossilised beetle remains were found in the stomachs of several well-preserved specimens of Gammasaurus geophagus, but these were erroneously believed to be examples of fossilised earth (so basically, rocks).



Hypsiloura helioscopus ('sky gazing high tail') was a camarasaurid from late Jurassic Montana. It was a medium-sized sauropod, capable of reaching tall monkey puzzles in search of foliage and pine cones. It was able to camouflage itself against the trunks of such trees by erecting its neck and tail and pretending to be a tree.



Iotatitan ischyrus ('strong "I" giant) was a titanosaurid from late Cretaceous Argentina. It was the largest sauropod ever known, and it is only known from a single partial cervical vertebra, but its total length has been extrapolated as anywhere from 27 m at the most conservative to 1.3 km at the other extreme. Since nothing is known of the skull or dentition, we cannot say anything about the diet of Iotatitan, except that it definitely ate something, and a lot of it.



Jovigyrinus jocosus ('joking Bon Jovi's salamander') was an early tetrapod from Devonian New Jersey. It was named after local rock band Bon Jovi. Jon Bon Jovi, the lead singer of the band, who is also an unsuccessful actor, has been quoted as saying about the animal, "Wow, at last something in the last two decades I can be proud of!" The animal was probably a predator of small fish and aquatic invertebrates such as trilobites in shallow seas, and would have had external gills like modern salamander larvae and axolotls.



Kappatherodon keiolophus ('cloven-crested "K" mammal-tooth') was a sphenacodontid therapsid related to Dimetrodon, but can be distinguished from it by its cloven back sail. Like its relative, it dates from the Permian of Texas and was a predator of smaller therapsids. It could only be active on hot days, between the hours of 10 and 11 a.m. and 1 and 2 p.m., unless it was during daylight savings time, when the hours are shifted an hour ahead. If Kappatherodon overslept, it would starve and become food for many a hungry Dimetrodon.



Lambdatherium lanatum ('woolly "L" mammal') was a multituberculate mammal from the Late Cretaceous of Kazakhstan. It was a colonial animal, living in mass burrow systems like rabbits or prairie dogs. It managed to survive beyond the K-T boundary, with remains of Lambdatherium lanatum being found 10 million years into the Palaeocene, proving beyond doubt that dinosaurs were abducted by aliens.



Micromacropteryx minutissimus ('very tiny little thing with long wings') was the late Triassic equivalent of a hummingbird. Although there were no flowering plants at the time, individuals could be seen flitting from plant to plant looking for sources of nectar. Of course, because there was no such thing as nectar, Micromacropteryx became hypercarnivorous, eating just about any flesh it could wrap its tiny jaws around.



Neonothosaurus natans ('swimming new bastard lizard', for its unknown parentage, and the fact that it's not very nice) was not a true nothosaur, and was not even a reptile. It represents the only known member of a lineage of lissamphibians to have developed a coat of scales which makes it able to spend extended periods of time outside of water. It lived in early Triassic lakes across northern Pangaea, which was to become the supercontinent of Laurasia.



Omegaraptor ookleptes ('egg-stealing "O" plunderer') was a large turquoise-coloured oviraptoran closely related to Citipati osmolskae. Like that dinosaur, Omegaraptor had a large and brightly-coloured head, and probably didn't steal eggs. That didn't stop one taxonomist from naming the species ookleptes, because he felt that just because it hasn't been proven, doesn't mean it isn't true.



Piceratops psittacoides ('parrot-like "P" horned face') is a close relative of Psittacosaurus but is much larger. Reaching a maximum of 20 m, Piceratops was easily the largest of the ceratopsians, and dwelled in Late Cretaceous forests in China.



Quinquecornis quintilis ('five horns of July') was the smallest of the ceratopsians, with adults reaching no more than 40 cm in length. Most of that length was taken up by the huge frill. As its name suggests, it has five horns: two small jugal horns on each side of the face; and a single large nasal horn. It lived in late Cretaceous North America. Fossils of Q. quintilis are most often discovered in the month of July.



Rhosaurus reductus ('aloof "R" lizard) was a prosauropod from Late Triassic South Africa. Just like the same region nowadays, South Africa was full of noisy buzzing sounds, but instead of coming from plastic vuvuzelas, Rhosaurus would have contributed to the din. It was a plant eater but was believed to be nocturnal due to its large orbits, but this is now known to be where the buzzing sounds arise from. The nocturnal nature led early palaeontologists to believe Rhosaurus was timid and aloof, hence the specific name.



Sigmacorypha suchophaga ('crocodile-eating "S" neck') was an elasmosaur, a group of long-necked plesiosaurs. It was a significant predator of Cyanosuchus, eating several individuals in one sitting.



Tautherium tragocerum ('goat-horned "T" mammal') was an ox-like ungulate from Miocene Tibet, occupying a similar niche to today's yak (Bos grunniens). It had no external ears, because its ancestors were aquatic and had since lost their pinnae.



Upsilonobatrachus umbrivagus ('shade-dwelling "U" frog') was a large temnospondyl amphibian from Carboniferous Spain. It would have preferred to lurk in the shade of tree ferns and other such plants whilst submerged in the water with its jaws agape, waiting for small fish to approach. Its yellow coloration is believed to be the earliest example of aposematic coloration known.



Virididipennis vorax ('with two green feathers and a huge appetite') was a small tree-dwelling reptile related to lizards and snakes but with large scaly outgrowths on the head which resemble feathers. The rest of the body is not known, but it has been suggested that it could be upto several miles long. It dwelled in Pliocene Thailand.



Woganosaurus williamsi ('Robin Williams's and Terry Wogan's lizard') was an early reptile that defies classification. It was found in Scotland in Carboniferous rocks by members of the BBC Radio 2 crew, and was named after the veteran host Terry Wogan. Robin Williams was honoured in the specific epithet due to the taxonomist's fondness for the movie Mrs. Doubtfire.



Xipteryx xanthypothalassus ('Yellow Submarine "X" wing') was an early primate which experimented with gliding. It had a pair of patagia between the ankle and wrist and would glide from tree to tree in Eocene Europe. The type specimen was discovered by Ringo Starr while touring. The species was named after one of his band's most popular songs, and one of the easiest to translate into Ancient Greek.



Yahoolophosaurus yptios ('upside-down Y.A.H.O.O. crested lizard') was a therapsid discovered in Permian Russia. It was found by members of the Young American Historical Ornithological Organisation who were on a field trip to Russia. The first specimen to be exhibited was mounted upside-down, hence the name, and why all reconstructions of the creature are upside-down.



Zetaornis zaocys ('very fast "Z" bird') was a species of tern (family Sternidae) from Pliocene Alaska. It had disproportionally long wings to power its extremely fast flight. It has been suggested that it could have reached speeds of upto 186,000 miles per second, which is of course the speed of light.

Cross posted from my blog: The Disillusioned Taxonomist
All art and text by Mo Hassan

Monday, January 18, 2010

Pliosaurs and Giant Sloths



Rhomaleosaurus cramptoni (Tate and Blake, 1863)
Rhomaleosauridae; Plesiosauria; Sauropsida; Chordata
Graphite pencil illustration on A5 paper
January 2010

The above illustration is of a cast of the holotype (original specimen) of a species of pliosaur, a marine reptile closely related to plesiosaurs, which generally have longer necks. The cast is one of the two main focal points (in my opinion) in the Fossil Reptile Gallery (the other one, see below, is not even a reptile) at the Natural History Museum, London, where I tend to spend a lot of time. Today, I felt compelled to sit and draw two beautiful specimens, and am quite proud of my effort.

I rarely used to get the chance to draw specimens at the Museum, as most of my time formerly got taken up by work of some description or another. I’ve been a Masters student, a volunteer and a librarian at the Natural History Museum at different points in the last few years, but now, despite doing some voluntary work in the Palaeontological Department, I have a lot of time to kill. So what better way to murder time than to draw skeletons.

I chose the Rhomaleosaurus to draw today for a number of reasons: (1) its sheer beauty and size; (2) it is one of my favourite specimens in the Museum; and (3) there is a bench placed conveniently opposite the specimen. I started by drawing a sketch of the entire animal, to make sure the whole thing fits on the paper. I am notorious for leaving off ends of tails and bottoms of feet because I don’t tend to plan ahead. This time I made sure the entire specimen would fit on a piece of paper 6 inches across.

Once I had a good idea of how it would fit, I began to detail, starting from the left hand side and working towards the right. I much prefer to draw animals that are facing the left; if you look at most of my portfolio (much of it can be seen on my blog, The Disillusioned Taxonomist) you can see this – it must have something to do with being right-handed. There may have been a subconscious decision to pick this specimen because it is facing the left. I detailed the skull, making sure all the holes were in the right places, and shaded the lower portion (from a viewer’s perspective; it is really the left part of the skull) darker than the upper side. Once the entire skull was shaded, I moved down the body.

Next came the cervical vertebrae, which, varying in state of preservation, were a challenge. There is a definite “ridge” across the midline of the specimen which appeared palest, creating a shadow beneath them to the left side of the animal’s neck. The number of vertebrae may not exactly match the real specimen, as I may have had to miss out a few or add a couple to fit!

The paddles were a fun part to draw, and I started on the top left one, the animal’s fore right paddle. First came the humerus, the ulna and the radius, then the small rounded carpal bones, followed by five digits made up of varying numbers of phalanges. The way that the cast was produced meant that there is a dark matrix around the smaller bones in the paddle, but this can be seen to represent the cartilage which was probably present in life, as whales have.

The rest of the vertebrae up to before the tail were much like the cervical vertebrae to illustrate, same dorsal ridge and shadowing. The ribs were more challenging: I wanted the ribs to appear shaded, like the same colour as the rest of the fossil, but paler than the areas between the ribs. In doing this, the ribs were hard to see, so I took a rubber (eraser) to the ribs and did my best to highlight them.

The hind paddles are very similar to the fore ones, and although the phalanges on one of the feet can’t be seen too well on this scan, they are roughly the same as on the other one. A small portion of the pelvis can be seen above the lower right paddle, and that created shadows on some of the femur, which I tried to indicate with darker shading.

The tail of the animal is poorly preserved, and the individual vertebrae cannot be made out clearly. I gave the entire tail a “base coat” of pale shading, adding darker patches to indicate shadows where I could see them. Some vertebrae could be made out, but only on the darker underside.

I really enjoyed drawing Rhomaleosaurus and want to try some of the other marine reptiles: there are plenty of plesiosaurs and ichthyosaurs to choose from, and a couple of mosasaurs, marine crocodiles and a stegosaur.



Megatherium americanum Georges Cuvier, 1796
Megatheriidae; Xenarthra; Mammalia; Chordata
Graphite pencil illustration on A5 paper
January 2010

After lunch, I decided to draw the other focal point of the Fossil Reptile gallery, a mammal. A giant ground sloth in fact, which is a cast of a fully grown animal standing on its hind legs and leaning against a wooden pole. There is no bench on which to sit, so I sat on the floor on top of my jacket.

I decided to go for a different tack to draw this animal; although detail was needed, an outline sketch would show more clearly the shapes of the bones rather than the entire thing shaded in dark greys and black. It is in a dimly lit corner of the gallery, right by the entrance to the Palaeo Department, and it is hard to get perspective of the individual bone shapes.

Having said that, I think I have given a good impression of the specimen, highlighting some bones that may not be immediately visible to those looking at it directly or at a photograph or detailed drawing. Take the hyoid bone, for example, which is at the front of the neck, a V-shaped bone which anchors the tongue and is present in most mammals and is often missed out when reconstructing skeletons in museums. All five digits of the animal’s left hand can be clearly seen, although it was difficult to make out the outlines of each phalanx or metacarpal, so I had to guess a bit. Digits II and III have huge claws, while the thumb is much reduced.

I created depth by using diagonal lines instead of smooth shading. Parts of the specimen in the foreground are not sketched in, and those furthest in the distance (the right shoulder blade, for instance) are shaded with closely-barred lines. This is not to indicate shadow, but distance, so you can tell which ribs are in the foreground, and hence which are on the animal’s left side.

Again, I started with a rough sketch to get the outline. I was a little concerned at first that the head was too large and the hind-quarters a little small, but they seem to be OK. I outlined each bone as I saw them, starting at the skull and mandible, moving down the neck to the shoulder blade, fore limbs, rib cage and sternum, backbone, pelvis, hind limbs, and tail.

I intended to describe my drawing technique in this post, but I don’t know if I’ve done that... if you have any particular questions to ask about this, or the specimens, or anything, say so in the comments! Thanks for reading!

Sunday, March 1, 2009

Member Bio: Mo Hassan

Hello fellow palaeo-art lovers, I’m Mo Hassan. The “Mo” is short for Muhammed, by the way. This is me with my favourite fossil ever, the Acadoparadoxides trilobites.


I’ve been a lifelong lover of animals and have been drawing them for twice as long. Since a very early age I could be seen with pens and paper and wildlife books, especially dinosaur ones. The precocious interest in the natural world, both as it is now, and how it once was, ultimately led me to my current choice of career.

I spend a lot of time at the world-famous Natural History Museum in London, where I work and study. My aim is to start a Ph.D. programme in vertebrate palaeontology in the next few years, and then ultimately be a researcher and theoretical palaeontologist. I love to impart knowledge, which is part of the reason why I started and have maintained The Disillusioned Taxonomist, so lecturing for me would not be out of the question, as part of my job. Incidentally, I chose the name for my blog due to the fact that I have always been interested in scientific names since I first heard about them in early childhood, so I naturally chose to study taxonomy. I then realised, whilst doing my Masters, that the world of taxonomy was changing, the role that DNA and other molecules play in the science of naming organisms has taken over from the classic descriptions of organisms from physical specimens; this is what has disillusioned me. This is the main reason for me to want to focus on palaeontology.

Here are some examples of early palaeo-artwork by myself. As you can see, I have been endowed with the gift of realistic drawing since a toddler!


Coelophysis, I think, at 8 years old


Carnotaurus, probably at 7 or 8 years old.

More recent examples include Dimetrodon, Huayangosaurus, Velociraptor and Tupuxuara.






In black and white, we also have Entelodon and Gomphotherium




I am more than honoured to have been invited to co-author this blog, as I greatly admire the work of my peers and feel humbled just to be here. My preferred media are colour pencil and graphite sketching pencils. I don’t have any special techniques, or favourite subjects to draw, although I prefer to draw birds, dinosaurs and skulls.

My formal art training has been minimal; I didn’t take art at high school, mostly due to the fact that I didn’t like being constrained, and was constantly criticised. I have taken two photography courses, however, one at AS-level (high school) and again as a part of my undergraduate degree, specialising in wildlife photography. I don’t know if this shows in my work, as I tend to take millions of pictures and then choose the best for my portfolio.

Mo Hassan

subhumanfreaks@hotmail.com

The Disillusioned Taxonomist