Aphelops



This is probably the last prehistoric animal of which I write until I get back from vacation, however, I mustered all my strength (which are already few when you look approaching the holidays) and have compiled enough information to get an idea of ​​this creature surprising. The name of this animal is to Aphelops Mutilus.

What does your name?

How ever we have seen, the name that experts give some prehistoric animals are simple, then put them in Latin or Greek, and it looks like something out of a more sensible work all palontólogo scholar and scientist. Nooooo, I do not mean this ... Mutilus, which is mutilated, and Greek + Ops aphelēs soft face. If we put all of this creature's name can be translated as the soft face mutilated. Actually, this name refers to the impression given paleontologists who discovered its remains for the first time. Found a rhinoceros, huge, which was lacking something, I had no horn ... hence the name soft mutilated face ... and how was it?

Well, as I said, it was a rhinoceros, an ancestor of the white rhino and black, but also the woolly rhinoceros. Easily exceeded 4.2 meters long (14 ft.) and was close to 3 meters tall (9 ft,). They were immense.

A large male white rhino can exceed 3,000 kg (6.600 lb), but easily surpassed Aphelops 4 tons (8.800 lb). Its constitution was robust, the larger body and smaller legs. Looked more like a hippo rhino.

Petite legs, big, round and with a huge rib cage body, without much hump like a rhinoceros. In fact, after analyzing the skeleton and teeth, experts concluded that the Aphelops Mutilus spent much of their time in the water, as hiccups live. Once out, he would be helpless, despite its large size, face formidable predators as Hyaenodon or Entelodon (or giant boar). If only I had a horn to defend ...

This large herbivore existed in the Miocene, between 20 and 5 million behind in what is now North America. Besides Aphelops Mutilus have been classified two species: Aphelops malacorhinus and Aphelops megalodus.

Panthera tigris acutidens


I'll tell you a secret. When we speak of prehistoric big cats, the most powerful, the most dangerous and terrible hunter, it's easy to come to mind two species: the Cave Lion (Panthera leo atrox) and the saber-toothed tiger (Similodon).

But really, there is another species that is probably the most terrible, strongest, largest cat that ever lived and that's a real unknown to the general public, it is the Panthera tigris acutidens. A cat can only hunt animals such as Stegodon (which is a type a type of small elephant) or Calicoterio. To get an idea, this prehistoric cat could hunt down an actual cape buffalo. One of those we see in documentaries Africa needed 4 or 5 lions to tear it down.

Panthera tigris acutidens, as the name suggests "tigris" is a kind of tiger. In fact it is considered a direct ancestor of the Asian tiger, the largest today.

Little is known of this beast. It was not only larger than the largest tiger today, it was also more massive. Therefore, it is thought that it was not a long distance runner, but short and quick, races depended stalking and grounds overgrown jungle that allowed close enough to approach their prey in a quick race. It is believed that could weigh 450 kg (992 lb), 100 kg (220 lb) more than the Siberian tiger. Moreover, the cross came to 1.30 meters and tail, could reach almost 4 meters (13 ft,).



The tusks of this were in line, about 15 cm in length. And when I was able to reach its prey nailed them like sharp daggers or spine smashed or crushed trachea hunted animal.

He lived 2 million years ago and it is not known exactly when it died ... in the early Pleistocene. In cold, snowy woods of what is now China and other parts of Asia, where its winter whitish camufrarse allowed.

Chirostenote


Ladies and gentlemen, sorry for a season without dealing the blog as much as I would have liked, but that is over. Moreover, nothing happens, the dinosaurs are timeless and, in gratitude and with intent to redeem myself, I want to show you one of the most picturesque dinosaurs that ever lived. This is the Chirostenotes, the "narrow hands."

You see the image below, you will understand what the name refers Chirostenotes or "close hand" ... no trick, its hands were narrow.



The "hands" of this saurian, were long and narrow, with very long fingers ending in sharp claws. That is the main feature.

Another feature of this prehistoric animal was its head. Look at the image below.


You know who is? As this animal is a Cassowary, a bird now living in Australia and New Guinea ... and is very aggressive. It is thought that the ridge has the Cassowary is similar to that which took the Chirostenotes. In fact, it seemed a little ... even thought this lizard was a bird. It had feathers, was bipedal, lakes and light arms and a crest like a Cassowary. But it really was not a bird.

Chirostenotes's jaw was sort of a parrot but was full of teeth. Media about 3 meters long and when were stood as tall as the average man. Grew to weigh no more than 60 kg. And think were fast and agile hunters who traveled at high speed and making great leaps and light careers.

It lived 75 million years ago in what is now Canada. And it is known today more than ever, especially for children, as it is one of the protagonists of the series of drawings Dinotren. Is smug and was known as Keenan.

Barosaurus.




The name "Barosaurus" refers to the size of this dinosaur. It is one of the greatest of all time, similar in size to Diplodocus.

The Barosaurus could reach up to 30 meters long and, at first sight, we would observe that it is the classic sauropod. Elongated, with stretched neck and whiplike tail with a tiny head and resting on its 4 legs. Was proportionally more massive than the Diplodocus, and this one was because its tail but was not as long, compared the neck itself was longer than the diplodocus.


Such a long neck poses many problems, especially uploading blood to the head that rose to the highest eat leaves of the highest trees. To address this, the general opinion raises the option of having a powerful and great heart. It has been estimated that the heart of this prehistoric animal could be as heavy and as big as the heaviest and largest bison: a heart of 1500 kg ...

Another option raises the possibility that something was 8 hearts .... funny because I know, some cephalopods have more than one heart ... but eight?
Another option is posed that Barosaurus veins had valves closed and allowed to recede and the blood does not create pressure which could be fatal. This method prevents the giraffes do not exploit their veins when head down to drink.
Mathematical models have clarified the issue, and have come to the conclusion that the animal raised its head .... then why such a long neck?

Another thing that attracts attention is that its neck vertebrae was huge. Of course, the whole animal was huge, have said the size of heart, but get an idea of ​​what our small neck vertebrae that are ... for those of Barosaurus larger than 1 meter. However, it is thought that these vertebrae were hollow, that it can reduce the weight of the neck.

Vegetarian and small head, this would be a great animal that if we go back 150 million years and travel to Africa, we would see it and we should be amazed that it was so big. We should be amazed that on Earth we know today had ever had a big animal.



Hallucigenia


Neither the science fiction writer Isaac Asimov, was as rare as this animal had happened. Get the name of Hallucigenia, a marvel of evolution. Its name refers to the word "hallucination", which is what they believed passing the first to see it, as this seems strange prehistoric animal that has been designed by a crazy artist, or an elephant or a dolphin. The paleontologists who discovered not believe what they saw, in fact, did not know its classification; if it was a plant, if it was face up or face down, did not know if he had head and where it was.

They were hallucinated when they found this impossibly small animal that was no more than 4 cm in length and that's apparitions in the Cambrian explosion, when there was the proliferation of life forms, some as strange as this.


As its body is tubular in shape, it is not easy to distinguish, in what place is the head. In fact, experts believe that the head is one of the bulky and ends with two appendices, but it's an assumption that an idea based on a test-out there.

Sensing where the head came next question was: how do walking? And still do not have the solution, after 40 years and several fossilized specimens found. The Hallucigenia had several protrusions. On the one hand, had 7 hard spines, and at first experts thought that moved like sea urchins .... moving the thorns. Then it found that he also had a soft tentacles moving in the opposite area .... how moving it? With the spikes or tentacles? Well, although it seems that the latter is more accepted, do not become totally agree ... and I do not know what to say.I will however get wet at the risk of saying the wrong thing (as you know, ignorance is very bold) If you walk with the tentacles, these could get food and on the other hand, the spines serve them to fend off potential predators. If it walk with barbed tentacles would not do them much good, much less as a defense. Therefore, to put right the Hallucigenia would say his feet were moving tentacles.

To give you a better idea of ​​the confusion brought about by the discovery of this animal, you even now some paleontologists think that it is an animal, but part of an even larger animal.
With what the story is a bit more complicated.

Anyway, if any of us, or our children, we traveled back in time to the Cambrian; Earth that we know seem another planet in another system, another galaxy and other different physical laws .... at least.
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