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Haptodus
 
 
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Haptodus was a small sphenacodont
Sphenacodontia

Sphenacodontia is the name given to the clade that includes the Sphenacodontidae and all their descendants . They first appear during the Late Pennsylvanian epoch....
, a lineage that includes therapsids. It was at least in length. It lived from Latest Carboniferous
Carboniferous

The Carboniferous is a geologic period that extends from the end of the Devonian period, about 359.2 ? 2.5 annum , to the beginning of the Permian period, about 299.0 ? 0.8 Ma ...
 to Early Permian
Permian

The PermianThe term "Permian" was introduced into geology in 1841 by Sir Roderick Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil; Murchison asserted in 1841 that he named his "Permian system" after the ancient kingdom...
, in the equatorial Pangea. It was a medium-sized predator, feeding on insects and small vertebrates. It is one of the most primitive sphenacodontid and it is related to other sphenacodontids
Sphenacodontidae

The Sphenacodontidae are a family of small to large, advanced, carnivore, Late Pennsylvanian to Guadalupian pelycosaurs. Primitive forms were generally small in size , but during the later part of the early Permian these animals grew progressively larger , to become the Apex predator of their environments....
 (or it may have been ancestral to them), such as Dimetrodon
Dimetrodon

Dimetrodon was a predatory synapsid genus that flourished during the Permian Period , living between 280?265 million years ago. It was more closely related to mammals than to true reptiles such as lizards....
. It shares many structural features of the skull and skeleton with the more specialised sphenacodontids.






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Haptodus was a small sphenacodont
Sphenacodontia

Sphenacodontia is the name given to the clade that includes the Sphenacodontidae and all their descendants . They first appear during the Late Pennsylvanian epoch....
, a lineage that includes therapsids. It was at least in length. It lived from Latest Carboniferous
Carboniferous

The Carboniferous is a geologic period that extends from the end of the Devonian period, about 359.2 ? 2.5 annum , to the beginning of the Permian period, about 299.0 ? 0.8 Ma ...
 to Early Permian
Permian

The PermianThe term "Permian" was introduced into geology in 1841 by Sir Roderick Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil; Murchison asserted in 1841 that he named his "Permian system" after the ancient kingdom...
, in the equatorial Pangea. It was a medium-sized predator, feeding on insects and small vertebrates. It is one of the most primitive sphenacodontid and it is related to other sphenacodontids
Sphenacodontidae

The Sphenacodontidae are a family of small to large, advanced, carnivore, Late Pennsylvanian to Guadalupian pelycosaurs. Primitive forms were generally small in size , but during the later part of the early Permian these animals grew progressively larger , to become the Apex predator of their environments....
 (or it may have been ancestral to them), such as Dimetrodon
Dimetrodon

Dimetrodon was a predatory synapsid genus that flourished during the Permian Period , living between 280?265 million years ago. It was more closely related to mammals than to true reptiles such as lizards....
. It shares many structural features of the skull and skeleton with the more specialised sphenacodontids. Unlike Dimetrodon, it lacked the "sail
Sail

A sail is any type of surface intended to generate thrust by being placed in a wind—in essence a vertically-oriented wing. Sails are used in sailing....
".

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See also

  • Dimetrodon
    Dimetrodon

    Dimetrodon was a predatory synapsid genus that flourished during the Permian Period , living between 280?265 million years ago. It was more closely related to mammals than to true reptiles such as lizards....
  • Edaphosaurus
    Edaphosaurus

    Edaphosaurus was a primitive herbivore pelycosaur. Along with the Diadectidae, Edaphosaurus is one of the earliest known plant-eating tetrapods ....
  • Sphenacodon
    Sphenacodon

    Sphenacodon was a pelycosaur that was about in length. Sphenacodon belongs to the family Sphenacodontidae, a lineage that was related to the therapsids....
  • Evolution of mammals
    Evolution of mammals

    __FORCETOC__The evolution of mammals from synapsids was a gradual process which took approximately 70 million years, beginning in the mid-Permian....