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Paradjidaumo trilophus

Osteichthyes - Rodentia - Eomyidae

Taxonomy
Gymnoptychus trilophus was named by Cope (1873).

It was recombined as Adjidaumo trilophus by Hay (1899), Hay (1902); it was recombined as Paradjidaumo (Paradjidaumo) trilophus by Korth (2013); it was recombined as Paradjidaumo trilophus by Wood (1937), Wilson (1949), Galbreath (1953), Wood (1974), Wood (1980), Korth (1980), Korth (2014), Korth et al. (2019).

Synonyms
Synonymy list
YearName and author
1873Gymnoptychus nasutus Cope p. 6
1873Gymnoptychus trilophus Cope p. 6
1899Adjidaumo trilophus Hay p. 253
1902Eumys minor Douglass p. 252
1902Adjidaumo trilophus Hay p. 720
1903Gymnoptychus minor Douglass
1903Gymnoptychus liolophus Matthew
1903Gymnoptychus minor Matthew
1930Adjidaumo minor Hay
1934Paradjidaumo minor Burke p. 396
1934Paradjidaumo nasutus Burke p. 396
1937Paradjidaumo minor Wood
1937Paradjidaumo trilophus Wood
1949Paradjidaumo trilophus Wilson p. 29 figs. Plate 2, figures r-w; text figures 1, 2
1953Paradjidaumo trilophus Galbreath
1965Paradjidaumo minor Black
1974Paradjidaumo trilophus Wood
1978Paradjidaumo hypsodus Setoguchi
1980Paradjidaumo trilophus Korth
1980Paradjidaumo minor Wood
1980Paradjidaumo trilophus Wood
2013Paradjidaumo (Paradjidaumo) trilophus Korth p. 112 figs. Figure 1A, 2A, 3A; Tables 2, 3
2014Paradjidaumo trilophus Korth p. 384
2019Paradjidaumo trilophus Korth et al. p. 19 figs. Figure 11; Tables A8, A9

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentia
infraorderCastorimorpha
superfamilyGeomyoideaBonaparte 1845
familyEomyidaeWinge 1887
genusParadjidaumo
speciestrilophus()

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.

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Invalid names: Eumys minor Douglass 1902 [synonym], Gymnoptychus liolophus Matthew 1903 [synonym], Paradjidaumo hypsodus Setoguchi 1978 [synonym], Paradjidaumo nasutus Cope 1873 [synonym]
Diagnosis
ReferenceDiagnosis
W. W. Korth 2013Intermediate sized (smaller than P. (P.) validus and P. (P.) spokanensis, larger than all other species); high molar crown-height (mean = 0.35); mesolophs (-ids) long on cheek teeth, generally reaching opposite side of tooth; anterior cingulid always attached directly to protoconid on lower molars even at earliest stages of wear; P4/p4 equal to, or slightly longer than, M1/m1.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: viviparoussubc
Created: 2005-08-26 14:04:46
Modified: 2005-08-26 21:04:46
Source: o = order, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Lillegraven 1979, Nowak 1999, Ji et al. 2002

Age range: base of the Late/Upper Chadronian to the top of the Whitneyan or 37.00000 to 29.50000 Ma

Collections (37 total)


Time interval Ma Country or state Original ID and collection number
Duchesnean - Chadronian39.7 - 33.9USA (Montana) Paradjidaumo trilophus (16840)
Chadronian37.0 - 33.9USA (North Dakota) Paradjidaumo trilophus (16991)
Chadronian37.0 - 33.9USA (Colorado) Paradjidaumo trilophus (16977)
Chadronian37.0 - 33.9USA (Wyoming) Paradjidaumo minor (17045) Paradjidaumo trilophus (16952)
Chadronian37.0 - 33.9USA (Nebraska) Paradjidaumo trilophus (16917 16930 16941 17014 17033)
Chadronian37.0 - 33.9USA (South Dakota) Paradjidaumo minor (17007)
Chadronian37.0 - 33.9USA (Montana) Paradjidaumo minor (16924 16946) Paradjidaumo trilophus (16949 16959 16988 16990 17041)
Late/Upper Chadronian37.0 - 33.9USA (Montana) Paradjidaumo trilophus (17027)
Late/Upper Chadronian37.0 - 33.9USA (Colorado) Paradjidaumo trilophus (85117)
Middle Chadronian37.0 - 33.9Canada (Saskatchewan) Paradjidaumo trilophus (16928)
Middle Chadronian - Late/Upper Chadronian37.0 - 33.9USA (Colorado) Paradjidaumo trilophus (156988)
Chadronian - Orellan37.0 - 31.8USA (Utah) Paradjidaumo minor (17008)
Orellan33.9 - 31.8USA (Colorado) Paradjidaumo trilophus (17081 17082)
Orellan33.9 - 31.8USA (Montana) Paradjidaumo minor (17075) Paradjidaumo sp. (17090)
Orellan33.9 - 31.8USA (Nebraska) Paradjidaumo trilophus (17098 17108 17159 17164 17250)
Orellan33.9 - 31.8USA (South Dakota) Paradjidaumo trilophus (17094)
Orellan33.9 - 31.8USA (Wyoming) Paradjidaumo hypsodus (17318)
Orellan33.9 - 31.8USA (North Dakota) Paradjidaumo trilophus (17301)
Whitneyan31.8 - 29.5USA (South Dakota) Paradjidaumo trilophus (17336 170168)