PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Eggysodon

Osteichthyes - Perissodactyla - Eggysodontidae

Taxonomy

Eggysodon was named by Roman (1910). It is not extant. Its type is Eggysodon osborni.

It was assigned to Hyracodontidae by Radinsky (1966), Carroll (1988); to Allaceropinae by de Bonis and Brunet (1995); to Alloceropinae by Prothero and Schoch (1989), Dashzeveg (1996); to Eggysodontinae by Bai and Wang (2012); and to Eggysodontidae by Wang et al. (2016).

Species

E. cadibonense, E. gaudryi, E. osborni (type species), E. turgaicum

Synonyms

Engyodon was named by Stehlin (1930). It is not extant.

It was synonymized subjectively with Eggysodon by de Bonis and Brunet (1995).

Synonymy list

Year	Name and author
1910	Eggysodon Roman
1930	Engyodon Stehlin
1966	Eggysodon Radinsky p. 635
1988	Eggysodon Carroll
1989	Eggysodon Prothero and Schoch p. 535
1995	Eggysodon de Bonis and Brunet
1996	Eggysodon Dashzeveg p. 9
2012	Eggysodon Bai and Wang
2016	Eggysodon Wang et al.

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

Rank	Name	Author
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
—	Panperissodactyla
superorder	Perissodactylamorpha
order	Perissodactyla	()
—	Tapiromorpha	(Haeckel 1873)
—	Ceratomorpha	(Wood 1937)
superfamily	Rhinocerotoidea
family	Eggysodontidae	Breuning 1923
genus	Eggysodon	Roman 1910

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.

G. †Eggysodon Roman 1910

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†Eggysodon cadibonense Roger 1898

†Eggysodon gaudryi Rames 1886

†Eggysodon osborni Schlosser 1902

†Eggysodon turgaicum Borissiak 1915

Invalid names: Engyodon Stehlin 1930 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

ground dwellingsubo

Diet:

browsersubo

Reproduction:

viviparoussubc

Created:

2005-08-31 15:03:12

Modified:

2005-08-31 17:03:12

Source: subo = suborder, subc = subclass, c = class, subp = subphylum

References: Lillegraven 1979, Hendy et al. 2009, Colbert and Schoch 1998, Carroll 1988, Ji et al. 2002

Age range: base of the MP 22 to the top of the MP 25 or 33.90000 to 23.04000 Ma

Collections (13 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Oligocene	33.9 - 27.3	Belgium	E. sp. (31748 183666)
Early/Lower Oligocene	33.9 - 27.3	Germany	E. sp. (36984)
MP 22	33.9 - 27.3	Germany	E. osborni (46097)
MP 24	33.9 - 27.3	France (Languedoc-Roussillon-Midi-Pyrénées)	E. gaudryi (182658)
Rupelian	33.9 - 27.3	Switzerland (Canton Basel-Landschaft)	E. osborni (182622)
Rupelian	33.9 - 27.3	France (Tarn)	E. gaudryi (181101)
Oligocene	33.9 - 23.04	Italy (Savona)	Aceratherium cadibonense (193758)
Chattian	27.3 - 23.04	France	E. gaudryi (60281)
Late/Upper Oligocene	27.3 - 23.04	Kazakhstan	E. sp. (64413)
Late/Upper Oligocene	27.3 - 23.04	France (Bouches-du-Rhone)	E. gaudryi (181656)
MP 25	27.3 - 23.04	Spain (Cuenca)	E. osborni (184097)
MP 27	27.3 - 23.04	Switzerland	E. gaudryi (184454)