Borophagus

Borophagus is an extinct genus of North American canids that lived during the Miocene and Pliocene. Its powerful jaws and bone-crushing teeth distinguish it among fossil canids.

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Carnassial: A specialized shearing tooth in carnivorous mammals, formed by the upper fourth premolar and lower first molar. Borophagus modified the carnassial region for crushing rather than relying only on shearing.
Canidae: The mammal family comprising dogs, wolves, foxes, and their extinct relatives. Borophagus belongs to this family, whose evolutionary history frames its anatomy.
Bone-crushing: The breaking and processing of bones by an animal's teeth and jaws. Borophagus is a well-known fossil canid used to study specialized bone processing.
Borophagus secundus: An extinct species of Borophagus known from the late Miocene of North America. This species is a representative case for studying the genus's bone-crushing adaptations.
Bite force: The force exerted by an animal's jaws when its teeth close on an object. Its robust jaws and enlarged teeth are evidence of adaptations for forceful biting.
Cynarctoides: An extinct genus of North American canids that lived during the Miocene. Its earlier presence helps trace the diversity of bone-crushing canids before Borophagus.
Osteophagy: The consumption of bones as food by animals. Its teeth have been interpreted as adaptations for an osteophagous diet.
Borophagus diversidens: An extinct species of Borophagus from the late Miocene and early Pliocene of North America. Its record helps trace Borophagus through the transition between geological epochs.
Dental formula: A notation describing the number and kinds of teeth on each side of a mammal's upper and lower jaws. Tooth counts help distinguish Borophagus species and compare them with other canids.
Aelurodon: An extinct genus of large, bone-crushing North American canids from the Miocene. Aelurodon provides a close ecological and anatomical comparison within the borophagine canids.