| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Branta hylobadistes
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
| Year | Name and author |
|---|---|
| 1991 | Branta hylobadistes Olson and James p. 45 figs. Fig. 13A,C,E,G,I |
Is something missing? Join the Paleobiology Database and enter the data
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.
†Branta hylobadistes Olson and James 1991
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. L. Olson and H. F. James 1991 | Larger 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
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
| 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 0.12900 to 0.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Pleistocene (interglacial) | USA (Hawaii) | Branta hylobadistes (89311) | |
| Holocene | USA (Hawaii) | Branta hylobadistes (type locality: 176476) |