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Microbiotherium patagonicum

Mammalia - Microbiotheria - Microbiotheriidae

Taxonomy
Microbiotherium patagonicum was named by Ameghino (1887). Its type specimen is MLP 11-30, a mandible (partial right mandibular ramus with alveoli of p1-2, part of anterior root of p3, and with m1-4 present), and it is a 3D body fossil. Its type locality is Barrancas del Río Santa Cruz, which is in a Santacrucian terrestrial horizon in the Santa Cruz Formation of Argentina.

Synonyms
  • Stylognathus diprotodontoides was named by Ameghino (1891). Its type specimen is MACN 5728, a mandible (left mandibular ramus with aveoli of i1-m1, and m2-4 present), 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 patagonicum by Marshall (1982).
  • Hadrorhynchus conspicuus was named by Ameghino (1891). Its type specimen is MACN 5740, a mandible (fragment of a left mandibular ramus with alveoli of i1-p1, and with p2-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 synonymized subjectively with Microbiotherium patagonicum by Marshall (1982).
Synonymy list
YearName and author
1887Microbiotherium patagonicum Ameghino
1891Stylognathus diprotodontoides Ameghino p. 23
1891Hadrorhynchus conspicuus Ameghino p. 25
1894Microbiotherium patagonicum Ameghino p. 105
1894Stylognathus diprotodontoides Ameghino p. 105
1894Hadrorhynchus conspicuus Ameghino p. 106
1982Microbiotherium patagonicum Marshall
2012Microbiotherium patagonicum 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
speciespatagonicumAmeghino 1887

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 patagonicum Ameghino 1887
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Invalid names: Hadrorhynchus conspicuus Ameghino 1891 [synonym], Stylognathus diprotodontoides 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: Lillegraven 1979, Hopson 1973, Clemens 1979, Hendy et al. 2009, Carroll 1988, Nowak 1991

Age range: base of the Aquitanian to the top of the Santacrucian or 23.03000 to 16.30000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Aquitanian23.03 - 20.44Argentina Microbiotherium patagonicum (206766)
Santacrucian17.5 - 16.3Argentina (Santa Cruz) Microbiotherium patagonicum (176565 176575 type locality: 176593 176594 176601) Microbiotherium patagonicum, Stylognathus diprotodontoides, Hadrorhynchus conspicuus (176570)