PBDB Taxon

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Aetomylaeus dixoni

Chondrichthyes - Myliobatiformes - Myliobatidae

Taxonomy

Myliobatis dixoni was named by Agassiz (1843).

It was recombined as Aetomylaeus dixoni by Boulemia and Adnet (2023).

Sister species lacking formal opinion data

A. bovinus

Synonyms

Myliobates rugosus was named by Leidy (1855).

It was synonymized subjectively with Myliobatis dixoni by Leriche (1942); it was recombined as Myliobatis rugosus by Hay (1902), Rapp (1946).
Myliobates obesus was named by Leidy (1855).

It was synonymized subjectively with Myliobatis dixoni by Leriche (1942); it was recombined as Myliobatis obesus by Rapp (1946).
Myliobatis rectidens was named by Cope (1870).

It was synonymized subjectively with Myliobatis dixoni by Leriche (1942).
Myliobatis copeanus was named by Clark (1895). It is a 3D body fossil. Its type locality is Clifton Beach, which is in a Thanetian transition zone/lower shoreface sandstone in the Aquia Formation of Maryland.

It was synonymized subjectively with Myliobatis dixoni by Leriche (1942), Bauzá Rullán and Gómez Pallerola (1982).
Myliobatis glottoides was named by Cope (1870). It is a 3D body fossil. Its type locality is Farmingdale, which is in a Bartonian marine sandstone in the Shark River Formation of New Jersey.

It was synonymized subjectively with Myliobatis dixoni by Leriche (1942).
Myliobates regley was named by Agassiz (1835).

It was synonymized subjectively with Myliobatis dixoni by Bauzá Rullán and Gómez Pallerola (1982).
Myliobates gyratus was named by Agassiz (1835).

It was synonymized subjectively with Myliobatis dixoni by Bauzá Rullán and Gómez Pallerola (1982).
Myliobates heteropleurus was named by Agassiz (1843).

It was synonymized subjectively with Myliobatis dixoni by Herman (1977), Bauzá Rullán and Gómez Pallerola (1982).
Myliobates eureodon was named by Schafhautl (1863).

It was synonymized subjectively with Myliobatis dixoni by Bauzá Rullán and Gómez Pallerola (1982).
Myliobates thomasi was named by Sauvage (1889).

It was synonymized subjectively with Myliobatis dixoni by Bauzá Rullán and Gómez Pallerola (1982).
Myliobatis fraasi was named by Stromer (1905).

It was synonymized subjectively with Myliobatis dixoni by Bauzá Rullán and Gómez Pallerola (1982).

Synonymy list

Year	Name and author
1835	Myliobates gyratus Agassiz figs. Pl 46, figs 1-3
1835	Myliobates regley Agassiz figs. Pl 46, figs 8-11
1843	Myliobatis dixoni Agassiz
1843	Myliobates regley Agassiz p. 320
1843	Myliobates gyratus Agassiz p. 323
1843	Myliobates heteropleurus Agassiz pp. 323-324 figs. Pl 47, figs 6-8
1855	Myliobates obesus Leidy
1855	Myliobates rugosus Leidy
1863	Myliobates eureodon Schafhautl
1870	Myliobatis rectidens Cope
1870	Myliobatis glottoides Cope p. 293
1889	Myliobates thomasi Sauvage
1889	Myliobatis dixoni Woodward p. 109
1895	Myliobatis copeanus Clark p. 4
1902	Myliobatis copeanus Hay p. 320
1902	Myliobatis glottoides Hay p. 320
1902	Myliobatis rectidens Hay p. 320
1902	Myliobatis rugosus Hay p. 320
1905	Myliobatis fraasi Stromer
1908	Myliobatis glottoides Hussakof
1910	Myliobatis dixoni Stromer p. 489
1926	Myliobatis dixoni Bohm p. 82
1926	Myliobatis dixoni White p. 41
1942	Myliobatis dixoni Leriche p. 23
1943	Myliobatis dixoni Dartevelle and Casier p. 186 figs. Pl 15, fig 10; pl 16, figs 1,2,4; text-fig 59
1946	Myliobatis dixoni Casier p. 106
1946	Myliobatis rectidens Rapp p. 510
1946	Myliobatis rugosus Rapp p. 510
1946	Myliobatis glottoides Rapp p. 511
1946	Myliobatis obesus Rapp p. 511
1947	Myliobatis dixoni Casier figs. Pl 1, fig 4; text-figs 7e, 8
1966	Myliobatis dixoni Cassier p. 93
1977	Myliobatis dixoni Herman p. 285
1982	Myliobatis dixoni Bauzá Rullán and Gómez Pallerola p. 70 figs. Pl 2, figs 5-7
1987	Myliobatis dixoni Cappetta p. 172
1988	Myliobatis dixoni Bauzá and Gómez Pallerola p. 132 figs. 3.31-3.33
1995	Myliobatis dixoni Baut and Génault p. 215 figs. Pl 12, figs 4,5
2002	Myliobatis dixoni Silva et al. p. 4
2020	Myliobatis dixoni Guinot et al. p. 33 figs. 8X-Z
2023	Aetomylaeus dixoni Boulemia and Adnet p. 10 fig. 3Y

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
class	Chondrichthyes
infraclass	Elasmobranchii	(Bonaparte 1838)

Rank	Name	Author
—	Euselachii	()
—	Neoselachii	Compagno 1977
superorder	Batomorphii
order	Myliobatiformes	Compagno 1973
suborder	Myliobatoidei	Compagno 1973
family	Myliobatidae	Bonaparte 1838
genus	Aetomylaeus	Garman 1908
species	dixoni	(Agassiz 1843)

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.

†Aetomylaeus dixoni Agassiz 1843

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Invalid names: Myliobates eureodon Schafhautl 1863 [synonym], Myliobates gyratus Agassiz 1835 [synonym], Myliobates heteropleurus Agassiz 1843 [synonym], Myliobates obesus Leidy 1855 [synonym], Myliobates regley Agassiz 1835 [synonym], Myliobates rugosus Leidy 1855 [synonym], Myliobates thomasi Sauvage 1889 [synonym], Myliobatis copeanus Clark 1895 [synonym], Myliobatis fraasi Stromer 1905 [synonym], Myliobatis glottoides Cope 1870 [synonym], Myliobatis rectidens Cope 1870 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

marinesubp

Locomotion:

actively mobileo

Life habit:

nektobenthico

Diet:

carnivoreo

Created:

2009-07-21 07:05:51

Modified:

2009-07-21 09:05:51

Source: o = order, subp = subphylum

References: Hendy et al. 2009, Carroll 1988, Wagner 2023

Age range: base of the Campanian to the top of the Priabonian or 83.60000 to 33.90000 Ma

Collections (71 total)

Time interval	Ma	Country or state	Original ID and collection number
Campanian	83.6 - 72.2	USA (Maryland)	Myliobatis obesus (127194)
Danian	66.0 - 61.66	Angola (Cabinda)	Myliobatis dixoni (195086)
Paleocene	66.0 - 56.0	Saudi Arabia (Makkah)	Myliobatis dixoni (140956 140957 140962 140963 140964 140966 140968 140969 140971 140972)
Paleocene	66.0 - 56.0	Brazil	Myliobatis dixoni (91356)
Paleocene	66.0 - 56.0	Angola (Cabinda)	Myliobatis dixoni (242404)
Paleocene	66.0 - 56.0	USA (Virginia)	Myliobatis dixoni (84047) Myliobatis dixoni, Myliobatis copeanus (84049)
Paleocene - Eocene	66.0 - 33.9	Angola (Cabinda)	Myliobatis dixoni (275419 275436)
Tertiary	66.0 - 2.58	USA (New Jersey)	Myliobates rugosus (84044)
Selandian	61.66 - 59.24	Angola (Cabinda)	Myliobatis dixoni (113759 195087 195088 195089 195090 242334)
Selandian	61.66 - 59.24	Congo-Kinshasa	Myliobatis dixoni (275408 275409)
Late/Upper Paleocene	59.24 - 56.0	USA (Maryland)	Myliobatis dixoni (84046)
Late/Upper Paleocene	59.24 - 56.0	USA (Virginia)	Myliobatis dixoni, Myliobatis copeanus (84048)
Late/Upper Paleocene	59.24 - 56.0	USA (Mississippi)	Myliobatis dixoni (62872)
Thanetian	59.24 - 56.0	Ukraine (Crimea)	Myliobatis dixoni (208954)
Thanetian	59.24 - 56.0	Angola (Cabinda)	Myliobatis dixoni (242390)
Thanetian	59.24 - 56.0	Algeria	Aetomylaeus dixoni (232262)
Thanetian	59.24 - 56.0	Togo	Myliobatis dixoni (61561 167948)
Thanetian	59.24 - 56.0	France	Myliobatis dixoni (276442 276443 276444 276445 276446)
Thanetian	59.24 - 56.0	USA (New Jersey)	Myliobatis obesus (3113)
Thanetian	59.24 - 56.0	USA (Maryland)	Myliobatis copeanus (124191) Myliobatis dixoni, Myliobatis copeanus (84045)
Thanetian - Ypresian	59.24 - 48.07	Angola (Cabinda)	Myliobatis dixoni (242388)
Wasatchian	56.0 - 51.1	USA (Virginia)	Myliobatis dixoni (15595)
Early/Lower Eocene	56.0 - 48.07	USA (Mississippi)	Myliobatis dixoni (62890)
Ypresian	56.0 - 48.07	United Kingdom (England)	Myliobatis dixoni (13299)
Ypresian	56.0 - 48.07	Angola	Myliobatis dixoni (83987)
Eocene	56.0 - 33.9	USA (Virginia)	Myliobatis copeanus (127179)
Eocene	56.0 - 33.9	USA (New Jersey)	Myliobates obesus (84050) Myliobatis rectidens (84043)
Lutetian	48.07 - 41.03	Belgium	Myliobatis dixoni (242328)
Lutetian	48.07 - 41.03	Congo-Kinshasa	Myliobatis dixoni (275438)
Lutetian	48.07 - 41.03	Togo	Myliobatis dixoni (32991)
Lutetian	48.07 - 41.03	Spain	Myliobatis dixoni (276612 276613)
Lutetian	48.07 - 41.03	United Kingdom (England)	Myliobatis dixoni (41888 41989 41992 41994 41996 41998)
Lutetian	48.07 - 41.03	Angola (Cabinda)	Myliobatis dixoni (83988 242382 242405 275442)
Lutetian	48.07 - 41.03	Nigeria	Myliobatis dixoni (60711)
Bartonian	41.03 - 37.71	USA (New Jersey)	Myliobatis glottoides (84022)
Bartonian	41.03 - 37.71	Nigeria	Myliobatis dixoni (32905)
Bartonian - Priabonian	41.03 - 33.9	Germany	Myliobatis dixoni (46086)
Priabonian	37.71 - 33.9	Namibia (Sperrgebiet)	Myliobatis dixoni (149316)