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Juncitarsus gracillimus

Osteichthyes

Taxonomy
Juncitarsus gracillimus was named by Olson and Feduccia (1980). Its type specimen is USNM 244318, a limb element (left tarsometatarsus), and it is a 3D body fossil. Its type locality is low buttes, northeast of Twin Buttes, which is in an Eocene terrestrial siliciclastic/sandstone in the Bridger Formation of Wyoming. It is the type species of Juncitarsus.

Synonymy list
YearName and author
1980Juncitarsus gracillimus Olson and Feduccia p. 48 figs. 23, 24b, 25-27a, 28-31

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
RankNameAuthor
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
classAves
subclassNeornithesGadow 1893
—Neognathae(Pycraft 1900)
genusJuncitarsus
speciesgracillimus

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.

†Juncitarsus gracillimus Olson and Feduccia 1980
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: solitaryo
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:39:15
Modified: 2009-01-03 22:39:15
Source: subo = suborder, o = order
References: Marsh 1875, Benton 1983, Kiessling 2004

Age range: base of the Middle Eocene to the top of the Bridgerian or 48.07000 to 45.90000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Bridgerian51.1 - 45.9USA (Wyoming) Juncitarsus gracillimus (16296)
Middle Eocene48.07 - 37.71USA (Wyoming) Juncitarsus gracillimus (type locality: 97759)