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Presbyornis isoni

Reptilia - Anseriformes - Presbyornithidae

Taxonomy
Presbyornis isoni was named by Olson (1994). Its type specimen is USNM 29416, a limb element (left humerus), and it is a 3D body fossil. Its type locality is Liverpool Point, which is in a Paleocene marine horizon in the Aquia Formation of Maryland.

Synonymy list
YearName and author
1994Presbyornis isoni Olson
2002Presbyornis isoni Kurochkin et al. p. 9

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
RankNameAuthor
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
classAves
subclassNeornithesGadow 1893
—Neognathae(Pycraft 1900)
—PangalloanseraeGauthier and de Queiroz 2001
—GalloanseraeSibley and Ahlquist 1990
superorderGalloanserimorphae
orderAnseriformesWagler 1831
familyPresbyornithidae
genusPresbyornis
speciesisoni

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.

†Presbyornis isoni Olson 1994
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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: volantg
Diet: herbivoreg
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:13:55
Modified: 2009-01-03 22:13:55
Source: g = genus, o = order
References: Marsh 1875, Livezey 1997

Age range: base of the Late/Upper Paleocene to the top of the Tiffanian or 58.70000 to 56.80000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Tiffanian61.7 - 56.8USA (North Dakota) Presbyornis isoni (15000)
Late/Upper Paleocene58.7 - 55.8USA (Maryland) Presbyornis isoni (type locality: 84046)