PBDB Taxon

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

Synthetoceras

Mammalia - Protoceratidae

Taxonomy

Synthetoceras was named by Stirton (1932). It is not extant.

It was assigned to Protoceratidae by Stirton (1932), Thurmond and Jones (1981), Carroll (1988); to Synthetoceratini by Webb (1981), Prothero (1998), Webb et al. (2003), Prothero and Ludtke (2007); and to Synthetoceratinae by Hulbert and Whitmore (2006), May (2019).

Species

S. (Prosynthetoceras), S. davisorum, S. tricornatus

Synonymy list

Year	Name and author
1932	Synthetoceras Stirton
1981	Synthetoceras Thurmond and Jones p. 189
1981	Synthetoceras Webb p. 362
1988	Synthetoceras Carroll
1998	Synthetoceras Prothero p. 436
2003	Synthetoceras Webb et al. p. 362
2006	Synthetoceras Hulbert and Whitmore p. 7
2007	Synthetoceras Prothero and Ludtke p. 174
2019	Synthetoceras May

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
—	Eugnathostomata
—	Teleostomi	(Bonaparte 1836)
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()

Rank	Name	Author
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
—	Artiodactylamorpha
—	Artiodactyla	()
—	Ruminantiamorpha
family	Protoceratidae
subfamily	Synthetoceratinae	Frick 1937
genus	Synthetoceras

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. †Synthetoceras Stirton 1932

show all | hide all

Subg. †Synthetoceras (Prosynthetoceras) Frick 1937

†Synthetoceras davisorum Hulbert and Whitmore 2006

†Synthetoceras tricornatus Stirton 1932

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialo

Locomotion:

actively mobilep

Life habit:

ground dwellingf

Diet:

grazerg

Reproduction:

viviparoussubc

Comments:

grazer based on premaxillary shape (Solounias and Moelleken 1993)g

Created:

2009-01-04 10:48:40

Modified:

2009-01-04 12:48:40

Source: g = genus, f = family, o = order, subc = subclass, subp = subphylum, p = phylum

References: Lillegraven 1979, Solounias and Moelleken 1993, Kiessling 2004, Carroll 1988, Prothero 1998, Nowak 1999

Age range: base of the Clarendonian to the top of the Hemphillian or 12.50000 to 4.70000 Ma

Collections (13 total)

Time interval	Ma	Country or state	Original ID and collection number
Clarendonian	12.5 - 9.4	USA (Nebraska)	S. tricornatus (18315)
Clarendonian	12.5 - 9.4	USA (Texas)	S. sp. (18623 18640) S. tricornatus (18074 18244 18252 18347 18355 18610 18645)
Hemphillian	9.4 - 4.7	USA (Florida)	Protoceratidae indet. (18560)
Hemphillian	9.4 - 4.7	USA (Alabama)	S. sp. (18559) S. tricornatus (81498)