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

Pliohippus tehonensis

Mammalia - Perissodactyla - Equidae

Taxonomy
Protohippus tehonensis was named by Merriam (1915) [also said to be 1916]. Its type specimen is UCMP 21779, a tooth (left M1), and it is a 3D body fossil. Its type locality is South Tejon Hills, which is in a Clarendonian terrestrial horizon in the "Santa Margarita" Formation of California.

It was recombined as Pliohippus (Pliohippus) tehonensis by Stirton (1940); it was recombined as Dinohippus tehonensis by Hulbert (1993); it was synonymized subjectively with Pliohippus fairbanksi by MacFadden (1998); it was considered a nomen dubium by Kelly (1995); it was recombined as Pliohippus tehonensis by Drescher (1941) and Kelly (1998).

Synonymy list
YearName and author
1915Protohippus tehonensis Merriam
1918Protohippus tehonensis Osborn p. 138 figs. Text Fig. 111
1940Pliohippus (Pliohippus) tehonensis Stirton p. 192
1941Pliohippus tehonensis Drescher
1993Dinohippus tehonensis Hulbert, Jr.
1998Pliohippus tehonensis Kelly

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
RankNameAuthor
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
superfamilyEquoidea
familyEquidae
subfamilyEquinae
tribeEquini
genusPliohippus
speciestehonensis()

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.

†Pliohippus tehonensis Merriam 1915
show all | hide all
Diagnosis
ReferenceDiagnosis
H. F. Osborn 1918(Merriam, 1915, Osborn, 1918) (1) Protocone and hypocone in the same longitudinal plane; (2)
from the crochet region a pli cahallin, a prominent crochet fold projecting into the prefossette; (3) a prominent fold projecting into the postfossette; (4) pre- and postfossettes triangular in form.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingsubf
Diet: browserg
Reproduction: viviparoussubc
Created: 2009-01-04 10:28:26
Modified: 2009-01-04 12:28:26
Source: g = genus, subf = subfamily, subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, MacFadden and Cerling 1996, Carroll 1988, Ji et al. 2002, Nowak 1991, MacFadden 1998, Hendy et al. 2009

Age range: Clarendonian or 12.50000 to 9.40000 Ma

Collections (29 total)


Time interval Ma Country or state Original ID and collection number
Miocene23.03 - 5.333USA (California) Pliohippus tehonensis (19148 19149)
Clarendonian12.5 - 9.4USA (California) Pliohippus tehonensis (19182 19276 19278 19310 19317 19322 19361 19467 19486 19487 19488 19489 19492 19494 19495 19496 19497 19499 19500 19508 19512 19517 19541 type locality: 19553 19592 19593 19594)