Definition of Sphenacodonts. Meaning of Sphenacodonts. Synonyms of Sphenacodonts

- Sphenacodontia is a stem-based clade of derived synapsids. It was defined by Amson and Laurin (2011) as "the largest clade that includes Haptodus baylei...
- Palaeohatteriidae is an extinct family of basal sphenacodonts known from the Early Permian period (****elian-Sakmarian stages) of Saxony, Germany. Two...
- the skull and the teeth. The sphenacodontoids evolved from earlier sphenacodonts such as Haptodus and Ianthodon via a number of transitional stages of...
- Haptodus is an extinct genus of basal sphenacodonts, a member of the clade that includes therapsids and hence, mammals. It was at least 1.5 metres (5 ft)...
- to be more primitive than other sphenacodonts like Dimetrodon. They thought varanopids and Dimetrodon-like sphenacodonts were closely related because both...
- whiskers unlikely. Therapsids evolved from a group of pelycosaurs called sphenacodonts. Therapsids became the dominant land animals in the Middle Permian,...
- "haptodontines" (=basal sphenacodonts) like Pantelosaurus. The cladogram below shows Palaeohatteria phylogenetic position among other sphenacodonts following Fröbisch...
- A redescription of sphenacodonts by Michel Laurin (1993 and 1994), revealed that it can't be ****igned to any named sphenacodont genus. Although its teeth...
- Pantelosaurus (meaning "complete lizard") is an extinct genus of basal sphenacodonts known from the Early Permian period (****elian stage) of Saxony, Germany...
- pelycosaurs. Therapsids evolved from a group of pelycosaurs called sphenacodonts. Therapsida consists of four major clades: the dinocephalians, the herbivorous...