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Microbiotherium acicula

Mammalia - Microbiotheria - Microbiotheriidae

Taxonomy
Prodidelphys acicula was named by Ameghino (1891). Its type specimen is MACN 5735, a mandible (a fragment of a right mandibular ramus with alveoli of i1-4 and m2, and c-m1 complete), and it is a 3D body fossil. Its type locality is Cerro Observatorio, which is in a Santacrucian terrestrial horizon in the Santa Cruz Formation of Argentina.

It was recombined as Microbiotherium acicula by Marshall (1982) and Abello et al. (2012).

Synonyms
  • Prodidelphys pavita was named by Ameghino (1891). Its type specimen is MACN 5736, a mandible (a fragment of a left mandibular ramus with alveoli of i1-c and m1-3, and with p1-3 complete), and it is a 3D body fossil. Its type locality is Cerro Observatorio, which is in a Santacrucian terrestrial horizon in the Santa Cruz Formation of Argentina.

    It was synonymized subjectively with Microbiotherium acicula by Marshall (1982).
  • Prodidelphys obtusa was named by Ameghino (1891). Its type specimen is MACN 5737, a mandible (a fragment of a left mandibular ramus with alveoli of i1-p3, and c complete), and it is a 3D body fossil. Its type locality is Cerro Observatorio, which is in a Santacrucian terrestrial horizon in the Santa Cruz Formation of Argentina.

    It was synonymized subjectively with Microbiotherium acicula by Marshall (1982).
Synonymy list
YearName and author
1891Prodidelphys acicula Ameghino p. 24
1891Prodidelphys pavita Ameghino p. 24
1891Prodidelphys obtusa Ameghino p. 25
1894Prodidelphys acicula Ameghino p. 105
1894Prodidelphys obtusa Ameghino p. 105
1894Prodidelphys pavita Ameghino p. 105
1982Microbiotherium acicula Marshall
2012Microbiotherium acicula Abello et al.

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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
RankNameAuthor
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
subclassMetatheria()
—Marsupialiformes
—Marsupialia()
—AustralidelphiaSzalay 1982
orderMicrobiotheriaAmeghino 1899
familyMicrobiotheriidae(Ameghino 1887)
genusMicrobiotheriumAmeghino 1887
speciesacicula()

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.

†Microbiotherium acicula Ameghino 1891
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Invalid names: Prodidelphys obtusa Ameghino 1891 [synonym], Prodidelphys pavita Ameghino 1891 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialc
Locomotion: actively mobilec
Life habit: scansorialf
Diet: insectivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-06-08 12:11:09
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Nowak 1991, Lillegraven 1979, Hendy et al. 2009, Hopson 1973, Clemens 1979

Age range: Santacrucian or 17.50000 to 16.30000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Santacrucian17.5 - 16.3Argentina (Santa Cruz) Microbiotherium acicula (87314) Prodidelphys acicula, Prodidelphys pavita, Prodidelphys obtusa (176570)