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

Branta hylobadistes

Reptilia - Avetheropoda - Anatidae

Taxonomy
Branta hylobadistes was named by Olson and James (1991). Its type specimen is USNM 322600 , a partial skeleton, and it is a 3D body fossil. Its type locality is Auwahi Cave, which is in a Holocene cave horizon in Hawaii.

Synonymy list
YearName and author
1991Branta hylobadistes Olson and James p. 45 figs. Fig. 13A,C,E,G,I

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

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
RankNameAuthor
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptora
Paraves
classAves
PygostyliaChiappe 2002
Ornithothoraces
OrnithuromorphaChiappe et al. 1999
subclassOrnithurae
subclassNeornithesGadow 1893
Neognathae(Pycraft 1900)
PangalloanseraeGauthier and de Queiroz 2001
GalloanseraeSibley and Ahlquist 1990
superorderGalloanserimorphae
orderAnseriformesWagler 1831
familyAnatidaeVigors 1825
subfamilyAnserinaeVigors 1825
tribeAnseriniVigors 1825
genusBrantaScopoli 1769
specieshylobadistes

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.

Diagnosis
ReferenceDiagnosis
S. L. Olson and H. F. James 1991Larger and more robust than Branta sandvicensis but with reduced wing and pectoral girdle. Dorsal surface of premaxilla in lateral view not as distinctly depressed posterior to tip, ventral surface of rostrum more concave. Sternal carina much reduced in depth and in posterior extent. Furcular facet of coracoid not as undercut, usually not pneumatic. Scapula with dorsal pneumatic foramen usually absent or greatly reduced. Pelvis with acetabulum and antitro- chanter absolutely and relatively much larger, preacetabular portion relatively longer and postacetabular portion shorter than in B. sandvicensis; broad posterior fusion between ilium and ischium as typical of Anatidae, unlike the unique con- dition in B. sandvicensis in which there is little or no fusion (Miller 1937; Olson
1985b). Wing elements extremely variable in size, usually smaller, sometimes much more so, than in B. sandvicensis. Pneumatic opening of humerus with lesser distal extent, shaft more gracile, brachial depression larger and deeper. Femur much more robust, head much larger, trochanter higher, rotular groove much deeper, anterior margins of condyles more elevated. Tibiotarsus more robust, outer cnemial crest broader, thicker, and rotated markedly more posteriad. Tar- sometatarsus more robust, trochleae more divergent.
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: freshwatersubf
Locomotion: actively mobileo
Life habit: volantsubf
Diet: folivoresubf
Diet 2: granivoresubf
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 19:20:59
Modified: 2009-01-03 21:26:40
Source: subf = subfamily, o = order
References: Sedinger 1997, Marsh 1875

Age range: base of the Late/Upper Pleistocene to the top of the Holocene or 0.12600 to 0.00000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Pleistocene (interglacial)0.126 - 0.0117USA (Hawaii) Branta hylobadistes (89311)
Holocene0.0117 - 0.0USA (Hawaii) Branta hylobadistes (type locality: 176476)