Knowra Multituberculata Multituberculata Multituberculata is an extinct order of mammals with multi-cusped cheek teeth. Its members lived from the Jurassic to the early Oligocene and occupied diverse ecological niches.
Mammalia : Mammalia is the vertebrate group comprising living mammals and their extinct relatives, distinguished by traits including hair and milk production. Multituberculata is one extinct branch within the mammalian lineage.
Tooth cusp : A tooth cusp is a raised point on a tooth's crown that contributes to cutting, crushing, or grinding. Multiple cusps form the repeated chewing surfaces characteristic of multituberculate cheek teeth.
Jurassic : The Jurassic is a geological period from about 201 to 145 million years ago, between the Triassic and Cretaceous. The earliest known multituberculates appear in Jurassic deposits.
Ptilodus : Ptilodus is a Paleocene multituberculate genus known from North American fossils. Its fossils illustrate multituberculate survival and diversification after the Cretaceous.
Cretaceous–Paleogene extinction event : The Cretaceous–Paleogene extinction event was the mass extinction about 66 million years ago that eliminated non-avian dinosaurs and many other groups. Multituberculates survived this event, raising questions about resilience and later decline.
Mammalian dentition : Mammalian dentition is the arrangement and structure of teeth in mammals, including differentiated tooth types and specialized chewing surfaces. Tooth structure supplies the clearest diagnostic evidence for multituberculates.
Occlusion (dentistry) : Occlusion is the contact relationship between opposing teeth when the jaws close or move during chewing. Tooth contact patterns help explain how multituberculate teeth processed food.
Cretaceous : The Cretaceous is a geological period from about 145 to 66 million years ago, ending with the Cretaceous–Paleogene extinction. Multituberculates diversified through the Cretaceous alongside other mammal groups.
Taeniolabis : Taeniolabis is a large Paleocene multituberculate genus known from North America. Its size shows that some multituberculates reached substantial body mass.
Mammalian extinction : Mammalian extinction is the disappearance of mammal lineages through ecological change, competition, environmental disruption, or other causes. The final disappearance of multituberculates requires explanation across different regions and times.
Show all 25