Monday 8 June 2015

Homotherium's jewellery debut!

As I've mentioned in previous post, I've been thinking about merging my passion for jewellery with my passion for palaeontology, and I did just that! The first palaeo-pieces are dedicated to Homotherium, and in particiular, to Homotherium latidens, an Eurasian species. 

For those who don't know much about that saber-toothed cat, let me write an introduction: Homotherium is a genus of machairodontidae family (one of several families, spread along three different biological taxa, of animals commonly referred to as saber-toothed cats), one that lived during the Pliocene and Pleistocene epochs. It was a rather successful genus, ranging from both Americas, Eurasia and Africa, and existing for approximately 5 million years. Homotherium is sometimes referred to as a scimitar cat, or a scimitar-toothed cat: this is because it has a different, shorter type of canines than its better known cousins like, for example, Smilodon. Its canines also have serrated edges, and those probably helped with cutting through thick hide of the preferred prey.

You already saw that one, but introduction without a picture is no introduction!


Homotherium displays an array of adaptations to life in cold climates, and more cursorial lifestyle than typical for most cats. It had large nasal opening, which allowed it to breathe faster (by which I mean it was able to breathe in and out quite rapidly, and that's really important if you want to run fast, just ask any horse ;) helping with running and cooling the brain. It had also large and complex visual cortex, which suggest it was more diurnal rather than nocturnal like most other cats. Homotherium's limbs were proportionally long, and, interestingly, its forelegs were longer than its hind legs, giving it sloped, hyaena-like appearance. Feet on the back legs were also partially plantigrade, to allow a greater contact with substrate on which the animal walked, making it easier for it to move across the snow.


Apart from being adapted to a more cursorial, active lifestyle than most cats, it was also a big-game hunter. It's typically associated with higher altitudes, and most common in the North, alongside big prey animals such as mammoths and woolly rhinos. Some evidence suggests that it specialised in hunting juvenile mammoths. This in turn suggests that those cats probably hunted in prides, similar to modern day lions. Animals whose remains are found alongside those of Homotherium's would be very difficult for an individual cat to bring down. Homotherium was about the size of a modern male African lion.


It first became extinct in Africa (about 1.5 million years ago), than in Eurasia, with the youngest found remains estimated to being about 28 000 years old (though that may not be correct estimate) about the time when climate shifted, and forests became more dominant in the landscape. Homotherium was a cold steppe hunter, and the shift to more forested environment favoured prey it was not well equipped to hunt). The genus lasted longest in North America, until about 10 000 year ago. Evidence from South America is scant, with a few recorded fossils of 1.8 million year old H. venezuelensis. It's hard to tell how long the genus lasted there, but it certainly did partake in the Great American Interchange, alongside Smilodon. 


It also happens to be one of my favourite saberteeth (hope that's the correct plural;) 
And as for the jewellery:
There's a necklace:





I must say that it was fun to make it (and earrings as well). I wanted it to feature Homotherium specifically, and not just some generic sabertooth head. To make the image, I first found a picture of Homotherium's skull (and it was H. latidens to be exact), drew a grid on it, copied in on a piece of paper, then scaled it down, drew soft tissue on the skull, and then scaled the whole thing even more, so it would fit on the pendant. It was an interesting exercise. The rest was easy, and typical: adding scrolls to the design, making the chain, the bail, oxidising...


And while I'm writing about the skull: it's rather long, and the lower jaw has down-turned flanges, that helped to protect the canines. The skull has also a well-developed crest, and that means that these animals had a hell lot of muscles to power the lower jaw. 


The necklace is 50cm ( 10 4/16in) long, and the pendant is 3.2cm (1 4/16in) in diameter. 
I forgot to use polarizing filter. Oh, well...

 There are also earrings, as I've already mentioned:

The images of the heads here I made exactly the same way as on the pendant. I must say that fitting them on a 1cm wide strip of metal was fun... I also decided to solder a jump ring to each earring, instead of making a whole in them. And of course I ended with solder all over the place. And what is really irritating about that? I had a little dish with yellow ocher pastel powder at hand. I just forgot it was there. I will either get really good at soldering, and stop getting solder everywhere, or will invent some extremely effective way of getting rid of the stuff, or maybe I will actually develop some decent memory, and stop forgetting about things like using something to stop the solder from flowing where I don't want it to go... The second one from all of these is the most probable development ;P





I've also got a new lens, and I already like it much, much better than the old one.
While making the earrings, I decided to play with a saw a bit more than usual, to practice. I know, it's not a very intricate shape, but I'm happy with it, especially because I managed to cut each earring in one continuous loop. That's really good, considering my sawing skills... or lack thereof... I now actually have some hopes of developing decent sawing-capabilities. Not so long ago I would not believe it possible. Unthinkable: my saw started to cooperate with me ( or, more likely, I stopped stopping it from doing its work properly) ;) The earrings are 4.5cm (6 with ear wire) or approx 1.8in (~2.4in counting ear wire) long.
So, that's that. Necklace is available here, and earrings here. And I also got renaissance wax, and I'm going to see how it works. Right now I now only one thing: it stinks like shoe polish ;P I hope it was worth the price tough. 

Till the next time!
Kasia

PS. should someone like a print with Homotherium, or, I don't now, a mug or something, I'm on redbubble. And I sometimes actually upload something there... 
PS2. Sources! I forgot to list the sources I used, and now I'm embarrassed! So here we go:
Ascanio D. Rincón, Francisco J. Prevosti & Gilberto E. Parra "New saber-toothed cat records (Felidae: Machairodontinae) for the Pleistocene of Venezuela, and the Great American Biotic Interchange", Journal of Vertebrate Paleontology, 31 (2), pages 468-478, DOI:10.1080/02724634.2011.550366
http://www.wired.com/2010/11/facing-homotherium/
http://www.prehistoric-wildlife.com/species/h/homotherium.html


1 comment:

  1. I recently came across your blog and have been reading along. I thought I would leave my first comment. I don’t know what to say except that I have enjoyed reading. Nice blog, I will keep visiting this blog very often.
    Titanium Rings UK

    ReplyDelete