Early cynodonts have many of the skeletal characteristics of mammals. The teeth were fully differentiated and the braincase bulged at the back of the head. Outside of some crown-group mammals (notably the therians), all cynodonts probably laid eggs.

cynodont, (clade Cynodontia), any of a group of mammal-like reptiles of the order Therapsida that existed from the Late Permian to the Early Cretaceous Epoch (259.5 million to 100.5 million years ago). Fossil evidence suggests that mammals evolved from cynodont stock early in the Jurassic Period (201.3 million to 145.0 million years ago).

Even the earliest cynodonts, the Procynosuchidae of the Late Permian, show many advanced mammalian characteristics, such as a reduced number of bones in the lower jaw, a secondary bony palate and a complex pattern of the crowns of their cheek teeth.

Cinodontes abrangem tanto os mamíferos atuais quanto seus parentes extintos (também chamados cinodontes não-mamalianos). Os primeiros cinodontes não-mamalianos apareceram por volta de 260 milhões de anos atrás: haviam formas carnívoras, herbívoras e onívoras, de tamanhos e aspectos variados.

In the unbroken evolutionary sequence from reptile to mammal, the cynodonts are intermediate between earlier and more primitive theriodont therapsids and the earliest mammals.

The Cynodonts are a sub-order of the Therapsida. Cynodonts, one of the most diverse groups of therapsids, are named after their dog-like teeth. The taxon is a clade which includes modern mammals and their extinct close relatives, the Mammaliaformes.

The cynodonts ('dog teeth') (clade Cynodontia) are a clade of therapsids that first appeared in the Late Permian (approximately 260 Ma), and extensively diversified after the Permian–Triassic extinction event. Cynodonts had a wide variety of lifestyles, including carnivory and herbivory.

2024年1月29日 · In this contribution we focus our study on the probainognathian cynodonts discovered in levels of the Tarjadia Assemblage Zone. We describe a new chiniquodontid cynodont with transversely broad postcanine teeth (Riojanodon nenoi gen. et sp. nov.) which is related to the genus Aleodon.

2016年1月1日 · In this contribution we present an overview of South American non-mammaliaform cynodonts and some taxonomic and biostratigraphic comments. Triassic units with cynodonts from Argentina and...

2021年2月23日 · Non-mammaliaform cynodonts, formerly called “mammal-like reptiles,” illustrate earlier states of the morphological architecture in the mammalian lineage.