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.
Wikimedia Commons has media related to Pristerodon.
^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.
^Kenneth D. Angielczyk; Bruce S. Rubidge (2010). "A new pylaecephalid dicynodont (Therapsida, Anomodontia) from the Tapinocephalus Assemblage Zone, Karoo Basin, Middle Permian of South Africa". Journal of Vertebrate Paleontology. 30 (5): 1396–1409. Bibcode:2010JVPal..30.1396A. doi:10.1080/02724634.2010.501447. S2CID 129846697.
External linksedit
The main groups of non-mammalian synapsids at Mikko's Phylogeny Archive
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pristerodon, extinct, genus, dicynodont, therapsid, from, late, permian, south, africa, zambia, india, temporal, range, late, permianskull, museum, für, naturkunde, berlinscientific, classificationdomain, eukaryotakingdom, animaliaphylum, chordataclade, synaps. Pristerodon is an extinct genus of dicynodont therapsid from the Late Permian of South Africa Zambia and India PristerodonTemporal range Late PermianSkull at the Museum fur Naturkunde BerlinScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClade SynapsidaClade TherapsidaSuborder AnomodontiaClade DicynodontiaFamily EumantellidaeGenus PristerodonHuxley 1868Type species Pristerodon mackayiHuxley 1868SynonymsEmydops longiceps Owen 1876 Oudenodon raniceps Owen 1876 Dicynodon trigoniceps Broom 1904 Diaelurodon whaitsi Broom 1911 Dicynodon pygmaeus Broom and Haughton 1917 Emyduranus platyops Broom 1921 Cerataelurus mirabilis Broom 1931 Orophicephalus microrhynchus Huene 1931 Brachyuraniscus merwevillensis Broili amp Schroeder 1935 Brachyuraniscus reuningi Broili amp Schroeder 1935 Synostocephalus vanhoepeni Broili amp Schroeder 1935 Emyduranus gracilis Broom 1935 Eumantellia mirus Broom 1935 Newtonella platyceps Broom 1937 Dimetrodon siwerstrai Broom 1940 Cryptocynodon schroederi Janensch 1952 Hueneus oudebergensis Toerien 1953 Parringtoniella broomi Toerien 1953 Emydops kitchingi Toerien 1953 Emydops murraysburgensis Toerien 1953 Contents 1 Paleobiology 1 1 Brain and senses 1 2 Ecology 2 Phylogeny 3 Gallery 4 See also 5 References 6 External linksPaleobiology editBrain 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 has been found in the Kundaram Formation of India Usili Formation of Tanzania the Upper Madumabisa Mudstone Formation of Zambia and the Teekloof Formation of South Africa Phylogeny editPristerodon in a cladogram modified from Angielczyk and Rubidge 2010 showing the phylogenetic relationships of Dicynodontia 2 Dicynodontia EodicynodonColobodectesLanthanostegus Pylaecephalidae RobertiaDiictodonProsictodonChelydontopsEndothiodonPristerodon Emydopoidea EmydopsMyosaurus Kingoriidae DicynodontoidesKombuisia Cistecephalidae CistecephalusCistecephaloidesKawingasaurus Pristerodontia InterpresosaurusElphRhachiocephalus Cryptodontidae OudenodonTropidostomaAustralobarbarus Geikiidae OdontocyclopsIdelesaurusAulacephalodonGeikiaPelanomodon Dicynodontoidea KatumbiaDelectosaurusDicynodonLystrosauridaeKannemeyeriiformesVivaxosaurusGallery edit nbsp Restoration of Pristerodon mackayi nbsp Size of Pristerodon mackayi relative to a humanSee also editList of therapsidsReferences edit nbsp Wikimedia Commons has media related to Pristerodon 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 Kenneth D Angielczyk Bruce S Rubidge 2010 A new pylaecephalid dicynodont Therapsida Anomodontia from the Tapinocephalus Assemblage Zone Karoo Basin Middle Permian of South Africa Journal of Vertebrate Paleontology 30 5 1396 1409 Bibcode 2010JVPal 30 1396A doi 10 1080 02724634 2010 501447 S2CID 129846697 External links editThe main groups of non mammalian synapsids at Mikko s Phylogeny Archive nbsp This Anomodont related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Pristerodon amp oldid 1185019061, wikipedia, wiki, book, books, library,
