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Stilotherium dissimile

Mammalia - Paucituberculata - Caenolestidae

Taxonomy
Stilotherium dissimile was named by Ameghino (1887). Its type specimen is MACN 8464, a mandible (fragment of a right mandibular ramus with complete dentition, missing only tip of large incisor), and it is a 3D body fossil. Its type locality is La Cueva, which is in a Santacrucian terrestrial horizon in the Santa Cruz Formation of Argentina.

Synonyms
  • Pichipilus exilis was named by Ameghino (1891). Its type specimen is MACN 5698, a mandible (fragment of left mandibular ramus with alveoli of m2, m3 present but very worn, and alveoli of m4), 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 Stilotherium dissimile by Marshall (1980) and Marshall (1982).
  • Garzonia typica was named by Ameghino (1891). Its type specimen is MACN 5700, a mandible (fragment of a right mandibular ramus with p2-3 and m1-2 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 Stilotherium dissimile by Marshall (1980) and Marshall (1982).
  • Garzonia captiva was named by Ameghino (1891). Its type specimen is MACN 5706, a mandible (right mandibular ramus with p3-m2 complete, and alveoli of m3-4), and it is a 3D body fossil. Its type locality is Shehuén, which is in a Santacrucian terrestrial horizon in the Santa Cruz Formation of Argentina.

    It was synonymized subjectively with Stilotherium dissimile by Marshall (1980) and Marshall (1982).
  • Garzonia minima was named by Ameghino (1891). Its type specimen is MACN 5709, a mandible (fragment of a right mandibular ramus with alveoli of m1 and m2-4 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 Stilotherium dissimile by Marshall (1980) and Marshall (1982).
  • Garzonia annectens was named by Ameghino (1891). Its type specimen is MACN 5703, a mandible (fragment of a right mandibular ramus with m1-4 complete but worn), 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 Parhalmarhiphus annectens by Ameghino (1894); it was synonymized subjectively with Stilotherium dissimile by Marshall (1982).
  • Halmarhiphus nanus was named by Ameghino (1891). Its type specimen is MACN 5720, a mandible (fragment of a right mandibular ramus with alveoli of m1 and m4, and m2-3 complete but worn), 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 Stilotherium dissimile by Marshall (1982).
Synonymy list
YearName and author
1887Stilotherium dissimile Ameghino
1891Garzonia annectens Ameghino p. 21
1891Garzonia typica Ameghino p. 21
1891Pichipilus exilis Ameghino p. 21
1891Garzonia captiva Ameghino p. 22
1891Garzonia minima Ameghino p. 22
1891Halmarhiphus nanus Ameghino p. 22
1894Pichipilus exilis Ameghino p. 95
1894Garzonia captiva Ameghino p. 98
1894Garzonia typica Ameghino p. 98
1894Garzonia minima Ameghino p. 99
1894Halmarhiphus nanus Ameghino p. 101
1894Parhalmarhiphus annectens Ameghino p. 101
1894Stilotherium dissimile Ameghino p. 101
1980Stilotherium dissimile Marshall
1982Stilotherium dissimile Marshall
2012Stilotherium dissimile Abello et al.
2021Stilotherium dissimile 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()
orderPaucituberculataAmeghino 1894
superfamilyCaenolestoidea
familyCaenolestidaeTrouessart 1898
genusStilotheriumAmeghino 1887
speciesdissimileAmeghino 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.

†Stilotherium dissimile Ameghino 1887
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Invalid names: Garzonia annectens Ameghino 1891 [synonym], Garzonia captiva Ameghino 1891 [synonym], Garzonia minima Ameghino 1891 [synonym], Garzonia typica Ameghino 1891 [synonym], Halmarhiphus nanus Ameghino 1891 [synonym], Pichipilus exilis 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: Hopson 1973, Lillegraven 1979, Nowak 1991, Clemens 1979, Hendy et al. 2009, Carroll 1988

Age range: base of the Santacrucian to the top of the Colloncuran or 17.50000 to 13.80000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Santacrucian17.5 - 16.3Argentina (Santa Cruz) Garzonia captiva, Stilotherium dissimile (176594) Pichipilus exilis, Garzonia typica, Garzonia minima, Garzonia annectens, Halmarhiphus nanus, Stilotherium dissimile (176570) Stilotherium dissimile (type locality: 176565)
Colloncuran15.5 - 13.8Argentina (Neuquén) Stilotherium dissimile (141175)