†Gomphos †Zagmys †Nikolomylus †Aktashmys †Asiaparamys †Kazygurtia †Eomylus †Eurymylus †Amar †Rhombomylus †Decipomys †Khaychina The Paleocene, early dawn of the recent, is a geologic epoch that lasted from 65 Ma to 56 Ma (million years ago). ... The Eocene epoch (56-34 Ma) is a major division of the geologic timescale and the second epoch of the Palaeogene period in the Cenozoic era. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Phyla Subregnum Parazoa Porifera (sponges) Subregnum Agnotozoa Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Myxozoa (slime animals) Superphylum Deuterostomia (blastopore becomes anus) Chordata (vertebrates, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Australosphenida Ausktribosphenida Monotremata Subclass Eutheria (excludes extinct ancestors) Afrosoricida Anagaloidea (extinct) Arctostylopida (extinct) Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Dinocerata (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Mesonychia... Families Many, see text The order Rodentia is the most numerous of all the branches on the mammal family tree. ...
Eurymylidae is a family of extinct simplicidentates. Most authorities consider them to be basal to all modern rodents and may have been the ancestral stock from whence the most recent common ancestor of all modern rodents (crown rodents) arose. Eurymylids are only known from Asia. In biological classification, family (Latin: familia, plural familiae) is 1) a rank or 2) a taxon in that rank. ... In biology and ecology, extinction is the ceasing of existence of a species or group of species. ... In phylogenetics, basal members of a group are subgroups that diverged very early from the others. ... Suborders Sciuromorpha Castorimorpha Myomorpha Anomaluromorpha Hystricomorpha Rodentia is an order of mammals (Mammalia). ... World map showing the location of Asia. ...
Order Rodentia - crown rodents (including all extant rodents)
Families See Classification Section The order Rodentia is the most numerous of all the branches on the mammal family tree. ... Families Many, see text The order Rodentia is the most numerous of all the branches on the mammal family tree. ...
References
McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp. ISBN 0-231-11013-8
Sciuromorpha: †Allomyidae | Aplodontiidae | †Mylagaulidae | †Reithroparamyidae | Sciuridae | Gliridae Suborders Sciuromorpha Castorimorpha Myomorpha Anomaluromorpha Hystricomorpha Rodentia is an order of mammals (Mammalia). ... Infraorders Anomaluromorpha Castorimorpha Ctenodactylomorpha Geomorpha Glirimorpha Myodonta Sciurida Sciurognathi is a suborder of rodents that includes squirrels, chipmunks, beavers, and many types of mice. ... Binomial name Aplodontia rufa Richardson, 1829 The Mountain Beaver (Aplodontia rufa) is a rodent unrelated to beavers and that is not usually found in mountainous areas. ... Genera Many: see text. ... Subfamilies and Genera Graphiurinae Graphiurus Leithiinae Dryomys Eliomys Hypnomys Myomimus Selevinia Myoxinae Glirulus Muscardinus Glis Dormice are Old World mammals in the family Gliridae, part of the rodent (Rodentia) order. ...
Castorimorpha: †Eutypomyidae | Castoridae | †Rhizospalacidae | †Eomyidae | †Heliscomyidae | †Mojavemyidae | Heteromyidae | Geomyidae Genera â Eocastoroides â Steneofiber â Neatocastor â Asiacastor â Youngofiber â Trogontherium â Eucastor â Schreuderia â Dipoides â Boreofiber â Romanocastor â Zamolxifiber â Procastoroides â Castoroides â Paradipoides â Agnotocastor â Capacikala â Pseudopalaeocastor â Fossorcastor â Euhapsis â Propalaeocastor â Palaeomys â Palaeocastor â Hystricops Castor The family Castoridae contains the two living species of beaver and their fossil relatives. ... Genera â Eocastoroides â Steneofiber â Neatocastor â Asiacastor â Youngofiber â Trogontherium â Eucastor â Schreuderia â Dipoides â Boreofiber â Romanocastor â Zamolxifiber â Procastoroides â Castoroides â Paradipoides â Agnotocastor â Capacikala â Pseudopalaeocastor â Fossorcastor â Euhapsis â Propalaeocastor â Palaeomys â Palaeocastor â Hystricops Castor The family Castoridae contains the two living species of beaver and their fossil relatives. ... Subfamilies See text. ... SubFamilies Dipodomyinae Heteromyinae Perognathinae Most Heteromyidae live in complex burrows within the deserts and grasslands of western North America, though species within the Heteromys and Liomys genera are also found in forests and extend down as far as northern South America. ... Genera see text The pocket gophers are burrowing rodents of the family Geomyidae. ...
Myomorpha: †Armintomidae | Dipodidae | Zapodidae | †Anomalomyidae | †Simimyidae | Platacanthomyidae | Spalacidae | Calomyscidae | Nesomyidae | Cricetidae | Muridae Suborder Myomorpha contains nearly a quarter of all mammal species. ... Armintomys was a genus of extinct rodent from North America related to jerboas and jumping mice. ... Genera 10 genera in 5 subfamilies A jerboa is a small jumping desert rodent of Asia and northern Africa that resembles a mouse with a long tufted tail and very long hind legs. ... The Meadow Jumping Mouse has yellow/tawny coloured sides, and a brown back. ... Subfamilies See text. ... Genera see text Platacanthomyinae is the only subfamily in the family Platacanthomyidae. ... Subfamilies see text Spalacidae is a family of rodents in the large and complex superfamily Muroidea. ... Species See text. ... Subfamilies see text Nesomyidae is a family of rodents in the large and complex superfamily Muroidea. ... Subfamilies see text Cricetidae is a family of rodents in the large and complex superfamily Muroidea. ... Subfamilies See text Muridae is the largest family of mammals. ...
Anomaluromorpha: Anomaluridae | †Parapedetidae | Pedetidae Families Anomaluridae â Parapedetidae Pedetidae Anomaluromorpha is the name given to a clade that unites the anomalures with the springhare. ... Genera Anomalurus, Idiurus, Zenkerella The Anomaluridae or scaly-tailed flying squirrels are a family of rodents found in central Africa. ... Binomial name Pedetes capensis (Coe, 1969) The Springhare, or Springhaas (Pedetes capensis) is not actually a hare, but a member of the order Rodentia; it is the only species in its family Pedetidae. ...
Hystricomorpha: †Tamquammyidae | Ctenodactylidae | Diatomyidae | †Yuomyidae | †Chapattimyidae | †Tsaganomyidae | †"Baluchimyinae" | †Bathyergoididae | Bathyergidae | Hystricidae | †Myophiomyidae | †Diamantomyidae | †Phiomyidae | †Kenyamyidae | Petromuridae | Thryonomyidae | Erethizontidae | Chinchillidae | Dinomyidae | Caviidae | Dasyproctidae | †Eocardiidae | Cuniculidae | Ctenomyidae | Octodontidae | †Neoepiblemidae | Abrocomidae | Echimyidae | Myocastoridae | Capromyidae | †Heptaxodontidae Families Ctenodactylidae â Tammquammyidae â Diatomyidae â Yuomyidae â Chapattimyidae â Tsaganomyidae Laonastidae â Baluchimyinae Hystricidae â Myophiomyidae â Diamantomyidae â Phiomyidae â Kenyamyidae Petromuridae Thryonomyidae Bathyergidae â Bathyergoididae Erethizontidae Dasyproctidae Agoutidae â Eocardiidae Dinomyidae Caviidae Hydrochaeridae Octodontidae Ctenomyidae Echimyidae Myocastoridae Capromyidae â Heptaxodontidae Chinchillidae â Neoepiblemidae Abrocomidae Skull of a capybara showing the enlarged infraorbital canal present in most members of the Hystricomorpha. ... Genera Ctenodactylus Felovia Massoutiera Pectinator Gundis (family Ctenodactylidae) are a group of small, stocky rodents found in Africa. ... Genera Laonastes â Diatomys â Fallomus â Willmus Diatomyidae is a family of hystricomorphous, sciurognathous rodents found in Asia. ... Bathyergoides is an extinct genus of rodent from Africa thought to be related to the modern blesmols. ... Genera Georychus Cryptomys Heliophobius Bathyergus Heterocephalus The blesmols, also known as mole rats, or African mole-rats, are burrowing rodents of the family Bathyergidae. ... Genera Atherurus Hystrix Thecurus Trichys The Old World porcupines are large representatives of the terrestrial rodent mammals, distinguished by their spiny covering from which they take their name. ... Subfamilies â Myophiomyinae â Phiocricetomyinae The Myophiomyids are an extinct form of Old World hystricognath. ... Subfamilies See text. ... Binomial name Petromus typicus A. Smith, 1831 The Dassie Rat, Petromus typicus, is an African rodent found among rocky outcroppings. ... Species Thryonomys gregorianus (Lesser Cane Rat) Thryonomys swinderianus (Greater Cane Rat) The genus Thryonomys, also know as cane rats, is a genus of rodent found in Africa south of the Sahara. ... Genera Coendou Sphiggurus Erethizon Echinoprocta The New World porcupines are large terrestrial rodents, distinguished by their spiny covering from which they take their name. ... This article or section does not cite its references or sources. ... The pacarana (Dinomys branickii) is a rare and slow-moving South American rodent found only in tropical forests of the western Amazon River basin and adjacent foothills of the Andes Mountains from northwestern Venezuela and Colombia to western Bolivia. ... Subfamilies Caviinae Dolichotinae The Cavy (family Caviidae) is divided in two subfamilies: Subfamily Caviinae: cavies and guinea pigs Genus Cavia, this genus is especially called cavy. ... Genera Dasyprocta Myoprocta Agouti The Dasyproctidae are a family of South American rodents, comprising three genera. ... The Eocardiidae are an extinct family of caviomorph rodents from South America. ... Species Agouti paca Agouti taczanowskii Species Paca, Agouti paca Mountain Paca, Agouti taczanowskii Categories: Stub | Rodents ... The tuco-tucos are members of a group of rodents that belong to the family Ctenomyidae. ... Genera Octodon Octodontomys Octomys Spalacopus Aconaemys Pipanacoctomys Salinoctomys Tympanoctomys The Octodontidae are a family of South American rodents. ... Genera Abrocoma Cuscomys â Protabrocoma Chinchilla rats are members of the family Abrocomidae. ... Genera â Cercomys â Maruchito â Paulacoutomys â Willidewu â Adelphomys â Deseadomys â Paradelphomys â Stichomys â Xylechimys Dactylomys Kannabateomys Olallamys â Boromys â Brotomys â Heteropsomys â Puertoricomys â Acarechimys â Chasichimys â Eumysops Lonchothrix Mesomys â Palaeoechimys â Pampamys â Pattersomys â Protacaremys â Protadelphomys â Sallamys Proechimys Thrichomys Trinomys Carterodon Clyomys Euryzygomatomys Callistomys Diplomys Echimys Isothrix Makalata Pattonomys Phyllomys Santamartamys The spiny rats are a group of hystricognath... Binomial name Myocastor coypus (Molina, 1782) The coypu or nutria (Myocastor coypus) is a large, crepuscular, semiaquatic rodent native to South America, but now also present in Europe, Asia, and North America. ... Genera Capromys Geocapromys â Hexolobodon Isolobodon Mesocapromys Mysateles Plagiodontia Rhizoplagiodontia Hutias are cavy-like rodents that inhabits the Caribbean Islands. ... Genera Amblyrhiza Clidomys Elasmodontomys Quemsia The giant hutias are an extinct group of large rodents known from fossil and subfossil material in the West Indies. ...
The Eurymylidae, from the early Tertiary of Asia, are the latest candidates for rodent ancestors.
Thus Meng places Tribosphenomys in a position peripheral to the Eurymylidae genus' Heomys and Eurymylus, suggesting that all three share a common ancestor, while this particular Tribosphenomys find is seemingly situated closest to rodent origins due to conclusions based on the analysis of its dental array.
Thus perhaps with new field research, and a re-appraisal of the fossil evidence at hand, it may be possible to draw closer to the origins of Rodentia than the distant past of the Eurymylidae and the Tribosphenomys.