Scientists are debating whether there were three distinct species of saber toothed tigers or five species. The most popular opinion at this time is for three species.
1. The oldest species was called Smilodon gracilis. Of the three, this species was the smallest. Typical mass would have been roughly 120 to 200 pounds. This species is thought to be the one which gave rise to the later (and larger) two species.
2. Smilodon fatalis was larger than the gracilis species, weighing roughly 350 to 620 pounds.
3. Smilodon populator was the largest of the three species. It weighed roughly 500 to 880 pounds.
no. the line of saber-toothed and dirk-toothed cats have all become extinct. they were less intelligent and less adaptable then the modern day big cats or panthera line which are the tiger, lion, leopard and jaguar. coupled with the changing environment and mass megafauna extinction of prey animals at the end of the last ice-age, competition with other hunters, the introduction of human peoples into the americas, they were simply "out evolved," by the other predators of the time. The modern day clouded leopard does have the longest canines in relation to body size of any existing feline but they are not a direct descendent of the saber or dirk toothed cats.
Smilodon (pronounced /ˈsmаɪləˌdɒn/), sometimes called saber-toothed tiger is an extinct genus of large machairodontine saber-toothed cats that lived between approximately 2,5 million to 10,000 years ago in North and South America. They are called "saber-toothed" for the extreme length of their maxillary canines. The La Brea tar pits in Los Angeles trapped hundreds of Smilodon in the tar, possibly as they tried to feed on mammoths already trapped. The Natural History Museum of Los Angeles County has many of their complete skeletons. Despite the colloquial name of "saber-toothed tiger", Smilodon is not closely related to a tiger, which belongs to another subfamily, the Pantherinae but is a member of the extinct subfamily Machairodontinae. The name Smilodon is a bahuvrihi from Ancient Greek: σμίλη, smilē, "knife" and Ionic Greek ὀδών, odon, "tooth"). It was among the largest felids, the heaviest specimens of this massively built carnivore may have reached a body mass of up to 400 kg [1].
Smilodon fatalis was the North American saber-tooth, smilodon populator was the larger South American saber-tooth. In North America, their contemporaries included the giant short faced bear, the American lion, the dire wolf, the grey wolf, the brown bear, and eventually the Clovis peoples. All of these animals would have been in contention with one another for natural resources such as hunting grounds, food and water. Under the right conditions any of these beasties would have been able to kill or be killed by one another. Fossil evidence indicates the the saber tooth was a social animal and may have lived in prides like lions which would have increased their ability to survive. In the end, a radically changing environment leading to a mass extinction of prey animals, competition with other predators for dwindling resources and the introduction of the Clovis peoples to the America lead to the demise and final extinction of the saber tooth cats and their lineage about 10,000 years ago.
Scientists are debating whether there were three distinct species of saber toothed tigers or five species. The most popular opinion at this time is for three species. 1. The oldest species was called Smilodon gracilis. Of the three, this species was the smallest. Typical mass would have been roughly 120 to 200 pounds. This species is thought to be the one which gave rise to the later (and larger) two species. 2. Smilodon fatalis was larger than the gracilis species, weighing roughly 350 to 620 pounds. 3. Smilodon populator was the largest of the three species. It weighed roughly 500 to 880 pounds.
400kg
400kg
The mass of a typical marker is around 10 grams.
The mass of a typical pencap is around 1 gram.
Read on BMI (body mass index), for example, in Wikipedia. There you can find the typical mass for different heights.
The mass of a typical pencil is around 5 to 10 grams.
millimeters squared
Around 300 pounds.