Cynodontia

9.9

A group of extinct reptiles with mammal-like teeth that are ancestors of mammals

noun
/ˌsɪnoʊˈdɑnʃə/

Specialized

: Cynodontia

The fossils of Cynodontia display distinctive mammal-like teeth, setting them apart from other Triassic reptiles.

Examples

Many paleontologists believe that Cynodontia is a crucial group in the evolution from reptiles to mammals.
The Cynodontia thrived during the late Triassic period.
Research on Cynodontia helps us understand how early synapsids adapted to their environments.
Many fossils of Cynodontia have been discovered in South Africa.
The fossils of Cynodontia display distinctive mammal-like teeth, revealing their significance in mammalian evolution.
Research on Cynodontia helps scientists understand the transition from reptiles to early mammals.
Many paleontologists believe that Cynodontia played an essential role in the development of mammal-like characteristics.

Synonyms

Therapsida

vsCynodontia

Specialized

1 9.9

An extinct group of animals that are like reptiles and gave rise to mammals

is a narrower Triassic group identified by mammal-like teeth

Synapsida

vsCynodontia

Specialized

1 9.9

A group of animals like reptiles from long ago that are early ancestors of mammals

is a smaller Triassic group defined by mammal-like teeth

Surface Forms

Cynodontia singular

Cynodontias plural

Morphology

Cynodontia = cynodont (opaque) = cynodont + ia

The formation uses specialized Greek combining forms and the taxonomic suffix '-ia', which are unlikely to be meaningful to an average B1 learner.

Etymology

Cynodontia comes from Greek parts cyno- meaning 'dog' and -odont meaning 'tooth', so it literally means 'dog-toothed'. It was named this because these extinct reptiles had teeth more like mammals, which helps explain why they are seen as early ancestors of mammals.