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🤖 | Dodo and mammoth are plump and delicious Japanese sweets soft vinyl! "Ancient Manju" is now available


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A Japanese sweet soft vinyl with plump and delicious mammoths! "Ancient Manju" is now available

 
If you write the contents roughly
The lineup consists of 6 species: Saber Tiger, Mammoth, Steller's Sea Cow, Dodo, Woolly Rhinoceros, and Binda Elephant Turtle.
 

From the original capsule toy brand "TAMA-KYU", "Ancient Manju" is a capsule nationwide ... → Continue reading

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Saber-toothed tiger

Saber-toothed tiger(Kensiko Saber-toothed cat)OligoceneFrom the second halfPleistoceneProsperedFelineAmong the meat beasts that belong toMaxillary caninesIs a saber-shaped group.probablySingle systemIs[2],Machairodontinae Machairodontinae Classified as.Saber tigerTomo.

Shoulder height is about 1m to 1.2m.Body length is 1.9-2.1m.Weight is 270 kg[3]..The uniquely developed maxillary canine has a sword-like shape that extends up to 20 cm.fangIt is probable that it was used as a weapon for specializing in hunting large animals.

Types

Saber-toothed tigers are classified into 3 groups[2]..However, the Metailurini and Smilodontini were probably paraphyly and diverged in this order.[2].

系統

Doraな どPanthera Panthera From the idea that it is close toSaber-toothed tigerOrcatな どネ コ 属 Felis From the idea that it is close toSaber-toothed catHowever, in reality, it is a strain that is not particularly close to the genus Panthera or Felis.

Homotherini Homotherium In the molecular phylogeny of the gene, homoterium was the first to diverge in the feline family.[4]..That is, neither the genus Felis nor the genus Panthera is closer than being a member of the family Felis.The entire saber-toothed tiger is a sister group to the modern feline lineage.[2].

Clouded leopardHas saber-like canines among modern species, but the genus Neofelis is closely related to the genus Panthera rather than the saber-toothed tiger, and its relationship with the saber-toothed tiger isConvergent evolutionIs[4].

Evolution and morphology

From the late Oligocene to the PlioceneMachairodusFrom the late Pliocene to the PleistoceneHomotherini・ Etc. appeared.The saber-toothed teeth of these animals, when closed, fit into a long pod-like depression in the lower jaw, but the last Pleistocene to emerge.SmilodonHad no such scabbard, and his sword teeth were sticking out directly.

Ecology

It is thought that it was difficult for the saber-toothed tiger family to track and catch fast-paced medium-sized and small-sized animals at high speed due to the characteristics of their chunky limbs.elephant,SaiKind ofMegateriumIt is thought that it attacked (such as friends of).The sword teeth are long but not very thick, so it is believed that they were killed by blood loss by biting into the soft neck and cutting organs and blood vessels, rather than by biting them to death.[5].CanineWith the upper jaw of the headGumとPeriodontal ligamentIf a strong force is applied, it will come off,leverLocal force is applied by the actionMaxillaThere is a danger of destroying the tiger, and it is conceivable that the same was true for the saber-toothed tiger.

On the other hand, some believe that the fangs were used to cut through the corpse, and therefore the saber-toothed tiger was a carnivorous tiger.But of paleontologistsTokio ShikamaIn the view of, the bones of attacking beasts are more damaged, but the bones of scavengers are not damaged.Smilodon's bones are prominently damaged, suggesting he was an attacker[6].

References

  • Carbone C, Maddox T, Funston PJ, Mills MG, Grether GF, Van Valkenburgh B. (2009). Parallels between playbacks and Pleistocene tar seeps suggest sociality in an extinct sabertooth cat, Smilodon.Biol Lett.

footnote

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注 釈

Source

  1. ^ Paleobiology Database: Machairodontinae
  2. ^ a b c d Ruta, Marcello (2012), “Convergence and Divergence in the Evolution of Cat Skulls: Temporal and Spatial Patterns of Morphological Diversity”, PLoS ONE 7 (7) two:10.1371 / journal.pone.0039752, http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0039752 
  3. ^ Tadaaki Imaizumi (supervised) "Secrets of Extinct Animals 59", p. XNUMX.
  4. ^ a b Agnarsson, Igni; et al. (2010) “Dogs, cats, and kin: A molecular species-level phylogeny of Carnivora”, Molecular Phylogenetics and Evolution 54: 726–745, http://ezlab.zrc-sazu.si/uploads/2011/05/Agnarssonal2010_Carnivora.pdf 
  5. ^ Heibonsha "Encyclopedia of the World" "Smilodon" (Setsuo Kamei), "Kiba (Fang)" (Yoshinori Imaizumi)
  6. ^ "Paleovertebrate Encyclopedia" Asakura Shoten, 1979

Related item

The characteristic "sword tooth" is found in various animals[1].

  • Dicynodonts-Not carnivorous, but had long, sharp canines for a variety of uses.
  • Dinocerata-Like the dicynodonts, they had long, sharp canines, but they were also herbivores.
  • --The appearance of a feline with large fangs with a lot of sightings in Central AfricaUnidentified animal(UMA). The relationship with, and the relationship with the saber-toothed tiger are unknown.

外部 リンク

  1. ^ Not all saber-toothed animals were predators, fossils reveal (National Geographic HP: 2020)

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