PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Hegetotherium mirabile

Mammalia - Notoungulata

Taxonomy

Hegetotherium mirabile was named by Ameghino (1887). It is not extant. Its type specimen is MACN A 631–632, a maxilla (associated specimens including right maxilla preserving I1–M3, where I1–2–3 and P1 are broken, and fragment of left I1; and partial left dentary bearing p2–m3).

It was synonymized subjectively with Hegetotherium strigatum by Lydekker (1894).

Synonyms

Hegetotherium strigatum was named by Ameghino (1887). It is not extant. Its type specimen is MACN A 536.

It was synonymized subjectively with Hegetotherium mirabile by Ameghino (1894) and Sinclair (1909).
Hegetotherium convexum was named by Ameghino (1891). It is not extant.

It was synonymized subjectively with Hegetotherium mirabile by Seoane and Cerdeño (2019).
Hegetotherium anceps was named by Ameghino (1891). It is not extant.

It was synonymized subjectively with Hegetotherium mirabile by Seoane and Cerdeño (2019).
Hegetotherium cuneatum was named by Ameghino (1891). Its type specimen is MACN A 3344–3346, a skull (skull and two mandibular fragments that belong to the same indi- vidual), and it is a 3D body fossil.

It was synonymized subjectively with Hegetotherium mirabile by Sinclair (1909).
Hegetotherium costatum was named by Ameghino (1891).

It was synonymized subjectively with Hegetotherium mirabile by Sinclair (1909).
Hegetotherium minum was named by Ameghino (1894). It is not extant.

It was synonymized subjectively with Hegetotherium mirabile by Seoane and Cerdeño (2019).
Selatherium pachymorphum was named by Ameghino (1894). It is not extant. Its type specimen is MACN A 3384, a mandible (a right mandibular frag- ment with i2–p3, but without the canine).

It was synonymized subjectively with Hegetotherium mirabile by Sinclair (1909).
Selatherium remissum was named by Ameghino (1894). It is not extant.

It was synonymized subjectively with Hegetotherium mirabile by Sinclair (1909).
Hegetotherium andinum was named by Roth (1898). Its type specimen is maxilla, a maxilla, and it is a 3D body fossil.

It was synonymized subjectively with Hegetotherium mirabile by Seoane and Cerdeño (2019).

Synonymy list

Year	Name and author
1887	Hegetotherium mirabile Ameghino
1887	Hegetotherium strigatum Ameghino
1891	Hegetotherium anceps Ameghino
1891	Hegetotherium convexum Ameghino
1891	Hegetotherium costatum Ameghino p. 5
1891	Hegetotherium cuneatum Ameghino p. 5
1894	Hegetotherium anceps Ameghino p. 19
1894	Hegetotherium convexum Ameghino p. 19
1894	Hegetotherium costatum Ameghino p. 19
1894	Hegetotherium cuneatum Ameghino p. 19
1894	Hegetotherium minum Ameghino p. 19
1894	Hegetotherium mirabile Ameghino p. 19
1894	Hegetotherium strigatum Ameghino p. 19
1894	Selatherium pachymorphum Ameghino p. 20
1894	Selatherium remissum Ameghino p. 20
1894	Hegetotherium strigatum Lydekker p. 8
1898	Hegetotherium andinum Roth p. 34
2004	Hegetotherium mirabile Croft et al. p. 33
2022	Hegetotherium mirabile Vizcaíno et al.

Is something missing? Join the Paleobiology Database and enter the data

Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()

Rank	Name	Author
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Afrotheria	Stanhope et al. 1998
—	Paenungulatomorpha
—	Paenungulata	Simpson 1945
—	Sudamericungulata
order	Notoungulata
suborder	Typotheria	Zittel 1892
—	Hegetotheriidae	(Ameghino 1894)
—	Hegetotheriinae	(Ameghino 1894)
genus	Hegetotherium	Ameghino 1887
species	mirabile	Ameghino 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.

†Hegetotherium mirabile Ameghino 1887

show all | hide all

Invalid names: Hegetotherium anceps Ameghino 1891 [synonym], Hegetotherium andinum Roth 1898 [synonym], Hegetotherium convexum Ameghino 1891 [synonym], Hegetotherium costatum Ameghino 1891 [synonym], Hegetotherium cuneatum Ameghino 1891 [synonym], Hegetotherium minum Ameghino 1894 [synonym], Hegetotherium strigatum Ameghino 1887 [synonym], Selatherium pachymorphum Ameghino 1894 [synonym], Selatherium remissum Ameghino 1894 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Maximum body mass:

14.23 kgs

Minimum body mass:

14.23 kgs

Body mass estimate:

14.23 kg

Body mass source:

publisheds

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

scansorialsubc

Diet:

herbivoreo

Reproduction:

viviparoussubc

Created:

2013-04-14 01:34:17

Modified:

2013-04-13 10:34:17

Source: s = species, o = order, subc = subclass, c = class, subp = subphylum

References: Vizcaíno et al. 2010, Hendy et al. 2009, MacFadden et al. 1996, Ji et al. 2002, Lillegraven 1979, Carroll 1988

Age range: Santacrucian or 17.50000 to 16.30000 Ma

Collections (16 total)

Time interval	Ma	Country or state	Original ID and collection number
Burdigalian - Langhian	20.44 - 13.82	Argentina (Santa Cruz)	Hegetotherium mirabile (197691)
Santacrucian	17.5 - 16.3	Argentina (San Juan)	Hegetotherium mirabile (197899)
Santacrucian	17.5 - 16.3	Chile	Hegetotherium mirabile (103804)
Santacrucian	17.5 - 16.3	Argentina (Santa Cruz)	Hegetotherium mirabile (27313 142533 176588 176589 176590 176600 176602 176603 176641 206234 206242 210153 210638)