Pristerodon

From Wikipedia, the free encyclopedia
  (Redirected from Pristerodon mackayi)
Jump to: navigation, search
Pristerodon
Temporal range: Late Permian
Pristerodon.jpg
Skull at the Museum für Naturkunde, Berlin
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Order: Therapsida
Infraorder: Dicynodontia
Family: Eumantellidae
Genus: Pristerodon
Huxley, 1868
Type species
Pristerodon mackayi
Huxley, 1868
Synonyms
  • Eumantellia Broom, 1935

Pristerodon is an extinct genus of dicynodont therapsid.

Restoration of Pristerodon mackayi
Size of Pristerodon mackayi relative to a human.

Paleobiology[edit]

Brain and Senses[edit]

Pristerodon were among the earliest land animals able to hear airborne sound as opposed to hearing via ground vibrations. A South African specimen studied with neutron tomography[1] has shown evidence of an eardrum on its lower jaw with the implication that it was hearing impaired during the act of chewing. The specimen had a 3mm cavity for cochlea which transformed sound frequency ranges into nerve impulses sent on to the brain.

Ecology[edit]

Pristerodon were herbivores living on flood plains.

See also[edit]

References[edit]

  1. ^ Laaß, Michael (26 June 2015). "The origins of the cochlea and impedance matching hearing in synapsids" (PDF). Acta Palaeontologica Polonica. 60. doi:10.4202/app.00140.2014. Retrieved 14 July 2015.