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Meiconodon

Mammalia - Eutriconodonta - Triconodontidae

Taxonomy
Meiconodon was named by Kusuhashi et al. (2009). Its type is Meiconodon lii.

It was assigned to Alticonodontinae by Kusuhashi et al. (2009) and Gaetano and Rougier (2011).

Species
M. lii (type species), M. setoguchii

Synonymy list
YearName and author
2009Meiconodon Kusuhashi et al. p. 768
2011Meiconodon Gaetano and Rougier p. 839 fig. 7

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
orderEutriconodontaKermack et al. 1973
familyTriconodontidaeMarsh 1887
subfamilyAlticonodontinaeFox 1976
genusMeiconodon

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.

G. †Meiconodon Kusuhashi et al. 2009
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†Meiconodon lii Kusuhashi et al. 2009
†Meiconodon setoguchii Kusuhashi et al. 2009
Diagnosis
ReferenceDiagnosis
N. Kusuhashi et al. 2009Small to medium sized alticonodontines. A meckelian groove is present; the number of molariforms is five; molariform cusps are posteriorly recumbent, and asymmetrical in occlusal view; an extensive interlocking system is developed between molariforms, but is absent between p4 and m1; cusp a of m3 is the tallest, cusp b the shortest; the cusps of m4 are subequal in height; the transverse width of m4 decreases posteriorly; cusp d is well developed in both m3 and m4; m5 is reduced in size, and erupts from the coronoid process at relatively high position. Differs from Astroconodon and Corviconodon in having a meckelian groove. Differs from Arundelconodon, Astroconodon, and Corviconodon in having a taller cusp a than cusps b and c in m3. Differs from Arundelconodon and Astroconodon in the absence of an extensive interlocking system between p4 and m1. Differs from Alticonodon in having shorter crown heights of molariforms, better separated molariform cusps, convex labial faces of the molariform cusps, and a shorter molariform cusp d. Differs from Arundelconodon in having a more developed cusp d. Differs from Astroconodon in having less separated cusps at their bases, and less recumbent molariform cusps. Differs from Corviconodon in having a somewhat higher crown relative to crown length. Differs from Jugulator in its smaller size, less recumbent molariform cusps, and a fingerlike molariform cusp d.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialc
Locomotion: actively mobilec
Life habit: scansorialuc
Diet: insectivoreuc
Created: 2005-09-06 19:53:51
Modified: 2005-09-07 19:44:02
Source: c = class, subp = subphylum, uc = unranked clade
References: Hendy et al. 2009, Hopson 1973, Luo et al. 2003, Carroll 1988

Age range: base of the Aptian to the top of the Albian or 125.00000 to 100.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Aptian - Albian125.0 - 100.5China (Liaoning) M. lii (36971) M. lii, M. setoguchii (123517)