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Quebradahondomys potosiensis

Mammalia - Rodentia - Echimyidae

Taxonomy
Quebradahondomys potosiensis was named by Croft et al. (2011). Its type specimen is UATF-V-001030, a mandible (Right dentary bearing m1-m3), and it is a 3D body fossil. It is the type species of Quebradahondomys.

Synonymy list
YearName and author
2011Quebradahondomys potosiensis Croft et al. pp. 258-259 figs. 3d, 10, 11a

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
RankNameAuthor
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
EuarchontogliresMurphy et al. 2001
GliriformesWyss and Meng 1996
Glires()
Simplicidentata()
orderRodentiaBowdich 1821
CtenohystricaHuchon et al. 2000
infraorderHystricognathi(Tullberg 1899)
Caviomorpha(Wood and Patterson 1955)
superfamilyOctodontoideaWaterhouse 1839
familyEchimyidaeGray 1825
genusQuebradahondomys
speciespotosiensis

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Quebradahondomys potosiensis Croft et al. 2011
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Diagnosis
ReferenceDiagnosis
D. A. Croft et al. 2011Quebradahondomys differs from Spaniomys Ameghino, 1877, in having trilophodont molars (tetralophodont in Spaniomys). It differs from Maruchito Vucetich et al., 1993, in its straighter, less undulating lophids, shallower and medially-directed hypoflexids, and narrower buccal lophids. Quebradahondomys differs from Stichomys Ameghino, 1887, Prostichomys Kramarz, 2001, Xylechimys Patterson and Pascual, 1968, and Deseadomys Wood and Patterson, 1959, in its lack of an anterofossettid and its more transverse lophids. It further differs from Stichomys in having a hypoflexid that is less penetrating and proportionally wider lingually, and in m3 being the largest tooth in the molar series (it is the smallest in Stichomys). Quebradahondomys resembles Adelphomys Ameghino, 1887, in having the hypoflexid and metaflexid separated only by a very narrow isthmus, but in Quebradahondomys the hypoflexid is shallower, the lophids are more transverse, and the posterolophid is anteroposteriorly thicker. Quebradahondomys lacks the confluence of the hypoflexid and mesoflexid present in Paradelphomys Patterson and Pascual, 1968. The molars of Ricardomys Walton, 1990, are smaller, proportionately narrower, and have less penetrating hypoflexids than Quebradahondomys.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: scansorialf
Diet: herbivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:44:11
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Nowak 1991, Ji et al. 2002

Age range: Laventan or 13.80000 to 11.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Laventan13.8 - 11.0Bolivia (Tarija) Quebradahondomys potosiensis (38071)