Posts Tagged With: dinosaur

Grand finale for this year!

The best way to end this year in this blog about the drawing of the fossils is with some dinosaur bones!

I have been changing the scope of my posts as much as my interests and experiences in the “real life”..
While I was painting this skull of Rajasaurus narmadensis, lots of thoughts came to me.

I remembered my first steps on blogging and my initial intentions, but at the same time I was thinking about the future: next movings, projects and hopes…

rajasaurus skull crudo

Rajasaurus narmadensis skull, based on sources from around the web

This is the first skull (or bone) I illustrate decently on watercolours . I tried to do this few times in the last year with various results, but this time was different: I performed with no fears, or knots on the stomach, no desperate brushing to rescue the outcome.
Painting this was a pleasure, I knew every next step, the response of the paper to the water, the reach of the brush (a new brush only for watercolour)…

It’s clear that this is only the beginning, and I happily welcome all the new chances awaiting in the next year!

rajasaurus skull web

Rajasaurus skull, with some reconstructed missing parts in grey

Hope you like it and happy new year for everyone! Many thanks for stopping by here!

Cheers ūüėÄ


Categories: Paleoart | Tags: , , , , , | 2 Comments

Genyodectes, the smiling dinosaur.

Genyodectes serus (Woodward 1901) is a poorly understood dinosaur.

Original plate taken from

Woodward 1901 original plate taken from Wikipedia

I met him while I was working at the Collection of Vertebrate Paleontology in the La Plata Museum.

Luckily, the fossil had been prepared for the study conducted and published by Rauhut (2004) so when I did my duties in the collection (2011-2012), the holotype (and only assigned material) was in excellent condition. A marvelous smile shining on the shelves!

Since then, I wanted to do a portrait of him¬†as those things that are put on the long list “to do”.

Finally this year the inspiration came and a few weeks ago I started the research background and the sketching, to constrain a bit the rush of the creative speculation…

genyodectes2 web

A heavily modified drawing of the skull of Ceratosaurus (Dark area corresponds with Genyodectes remains) Source: Flickr

As you can see … there are not too many barriers to the imagination in this case.. but Genyodectes is very close to Ceratosaurus in dental morphology and some other small details, and both were medium sized theropods.. so cut something here… stretch other there and done: a very conservative skull but not to the boring limit!

genyodectes wip

Intermediate stage in the drawing…

If you are wondering where I got the pattern for the skin … well is based on the skin of my dear “overos” (Tupinambis merianae)¬†which fortunately still can be seen in the countryside or in the mountains near my house.


Picture of one that came as guest to our BBQ last summer.. (a better picture which I used as a reference here)

To end the suspense (and after several hours of drawing and computer) here is my portrait of the mysterious smile that captivated me years ago:

Genyodectes limpio web

Genyodectes serus, the “biter jaw” from patagonia

Categories: Paleoart | Tags: , , , , | Leave a comment

On some old drawings.

Dusting off some folders on a Sunday cleaning, I found some of my first attempts at scientific drawing.

I have to admit that the first of all were direct copies of illustrations of books or magazines, but, as an exercise of exploration  I got fond results and that encouraged me to keep going.

caballo cervical web

Horse (Equus sp) cervical vertebrae, anterior view. (Copied from an old book)

Another horse vertebrae (dorsal?) This time I copied the dot shaded drawing and just beside I made a grey scale reinterpretation. (circa 2008) (From the same old book, I can't recall which one)

Another horse vertebrae (dorsal?) This time I copied the dot shaded drawing and just beside I made a grey scale reinterpretation. (2008)
(From the same old book, I can’t recall which one)

Then I started experimenting with bones that had at my disposal, ¬†to try to get a more “real” approximation of what this job entails…

craneo de Coipo web

Coypu (Myocastor coipus) broken skull. Field sketch on notebook (2009)

A horse's metatarsal, distal end. (A gift from a very good friend)  I planned to do four views of this fragment, but then a paleontologist saw this drawing among other, and began to give me some real bones to deal.. (2009)

A horse’s metatarsal distal end. (A gift from a very good friend)
I planned to do four views of this fragment, but then a paleontologist saw this drawing (among other), and began to give me some real bones to deal.. (2009)

Then it was time to draw real fossils! And I was lucky enough to start with a sauropod dinosaur: Bonitasaura salgadoi.

While these drawings were not published, I took my work very seriously and gave my best!

chevron Bonitasaura web

Bonitasaura salgadoi chevron. Maybe the most extensively illustrated chevron of a patagonian sauropod… The drawings are made at natural size because I used to cast vertical lines from the fossil contour to the sheet of paper.

falange Bonitasaura web

Bonitasaura salgadoi phalanx (?). This one is big as the A4 sheet I used, and that made me feel uncomfortable. I was a newbie at the time on how to draw wide areas with gray tones. (2009)

I pass all of 2009 and early 2010 experimenting and refining my drawings, until I took a course in scientific illustration and I really felt fit to go out and play in the big leagues!

But nevertheless, I’m still learning with curiosity every time I am presented with a new job, a new challenge to achieve…

Categories: Paleoart | Tags: , , , | 2 Comments

Many drawings but few fossils?

Many drawings but few fossils?

Despite being really working with fossils, I have been giving them little room in my time for drawing. To go back to give them some attention, I started with one of the first dinosaurs: Eoraptor!

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Dinosaur sketching weekend

While digitalizing a selection of my everyday’s sketchbook pages I gather some nice dinosaur sketches (among others creatures: the best!)




Dinosaurs are the very reason why I’m in love with natural sciences.

They were my first glimpse around vertebrate form and function, and compared anatomy

(one of the most fascinating field of science to me)




Over the years I always tried keep out the comfortable cliches and at the same time I started need graphic references about the dino I’m drawing.
As all this sketches are done without references.. well they look in comfortable poses and lack all the wiki details that nerds like me, love to find in “good paleoart”




The new thing with this selected gathering is the use of liner brush and sanguine watercolour to perform the drawing form zero to the end.


hadro web



Free bonus:


crowed web



Hope you like them!


Categories: Sketchs | Tags: , , , , , | 2 Comments

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