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Amphechinus minutissimus

Mammalia - Erinaceidae

Taxonomy
Amphechinus minutissimus was named by Ziegler et al. (2007). Its type specimen is NHMW 2005z0199/0001, a tooth (M1 sup. dext.), and it is not a trace fossil. Its type locality is DEL-B/12, Valley of Lakes, Central Mongolia, which is in an Oligocene terrestrial horizon in the Hsanda Gol Formation of Mongolia.

Sister species lacking formal opinion data
A. rectus

Synonymy list
YearName and author
2007Amphechinus minutissimus Ziegler et al. p. 104 figs. Fig. 12/9

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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()
RankNameAuthor
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Eulipotyphla
familyErinaceidaeFischer von Waldheim 1817
subfamilyErinaceinaeFischer de Waldheim 1817
tribeAmphechininiGureev 1979
genusAmphechinusAymard 1850
speciesminutissimus

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.

†Amphechinus minutissimus Ziegler et al. 2007
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Diagnosis
ReferenceDiagnosis
R. Ziegler et al. 2007Smallest Amphechinus species known so far. It differs from all species of the genus in its distinctly smaller size, and it is characterised by the co-occurrence of the following traits: dental formula 2-1-2-3, p2 single-rooted, m3 single-rooted without vestige of a talonid or postcingulid, M1 and M2 without metaconule.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: semifossorialf
Diet: insectivoref
Diet 2: carnivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2012-05-14 22:01:37
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Lillegraven 1979, Nowak 1991, Carroll 1988, Hendy et al. 2009

Age range: Late/Upper Oligocene or 27.30000 to 23.04000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Oligocene27.3 - 23.04Mongolia Amphechinus minutissimus (type locality: 75599 75602 176447 182080 182083 182143)
Late/Upper Oligocene27.3 - 23.04Mongolia (Övörkhangai) Amphechinus minutissimus (182078 182082 182085)