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Encyclopedia > Carnassial

Carnassials are large teeth found in carnivorous mammals, designed for shearing flesh and bone in a scissor-like way. In the Carnivora, the carnassials are the modified last upper premolar and the first lower molar, but in the prehistoric creodonts, the carnassials were further back in the jaw - first upper and second lower or second upper and third lower molars. This article deals with meat-eating animals. ... Orders Subclass Monotremata Monotremata Subclass Marsupialia Didelphimorphia Paucituberculata Microbiotheria Dasyuromorphia Peramelemorphia Notoryctemorphia Diprotodontia Subclass Placentalia Xenarthra Dermoptera Desmostylia Scandentia Primates Rodentia Lagomorpha Insectivora Chiroptera Pholidota Carnivora Perissodactyla Artiodactyla Cetacea Afrosoricida Macroscelidea Tubulidentata Hyracoidea Proboscidea Sirenia The mammals are the class of vertebrate animals primarily characterized by the presence of mammary... Different types of scissors - sewing, kitchen, paper Scissors are a tool used for cutting thin material which requires little force. ... Families 17, See classification The diverse and interesting order Carnivora IPA: (from Latin carō (stem carn-) flesh, + vorāre to devour) includes over 260 placental mammals. ... The premolar teeth or bicuspids are transitional teeth located between the canine and molar teeth. ... Molar 47 (left), molar 46 and premolar 45(right) Molars are the rearmost and most complicated kind of tooth in most mammals. ... Families Oxyaenidae Hyaenodontidae The creodonts were an extinct order of mammals that lived from the Paleocene to the Pliocene. ...


Carnassials are the defining characteristic of the Carnivora order; that is, they are the one thing that all of the animals within the order have in common.


Carnassial teeth all have three roots.


Carnassial teeth truly reflects its shape. Mountainously large and pointy, the carnassial teeth are designed to shear tough, maybe frozen meats and crush bones. Devastation of the carnassial teeth in a wild carnivore (eg. wolves, lions) may result in the death of the individual due to starvation or incompetence.

  • Carnassial teeth in a Puma

  Results from FactBites:
 
Carnassial - Wikipedia, the free encyclopedia (162 words)
Carnassials are large teeth found in carnivorous mammals, designed for shearing flesh and bone in a scissor-like way.
In the Carnivora, the carnassials are the modified last upper premolar and the first lower molar, but in the prehistoric creodonts, the carnassials were further back in the jaw - first upper and second lower or second upper and third lower molars.
Carnassials are the defining characteristic of the Carnivora order; that is, they are the one thing that all of the animals within the order have in common.
Natural History Collections: Carnivores (660 words)
The ancestral feature, which indicates that all these mammals evolved from a common lineage, that expanded 50 million years ago (mya), are their highly modified fourth upper premolar and first lower molar teeth which are adapted to shear flesh.
These four teeth, called carnassial teeth, have knife-like edges so that the teeth slice past one another and act like scissors when the jaw is closing.
In others, the carnassial teeth have become adapted to a herbivorous or to an omnivorous, mixed diet of meat and vegetable.
  More results at FactBites »

 
 

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