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Ocyplonessa shotwelli

Reptilia - Anseriformes - Anatidae

Taxonomy
Ocyplonessa shotwelli was named by Brodkorb (1961). Its type specimen is UOMNH F-10485 & F-11291, a limb element (distal end of left tibiotarsus), and it is a 3D body fossil. Its type locality is Black Butte (UO 2337), which is in a Clarendonian terrestrial horizon in the Juntura Formation of Oregon.

It was recombined as Histrionicus shotwelli by Olson and Rasmussen (2001).

Synonymy list
YearName and author
1961Ocyplonessa shotwelli Broadkorb
1961Ocyplonessa shotwelli Brodkorb pp. 178-180 fig. 5
1964Ocyplonessa shotwelli Brodkorb p. 330
2001Histrionicus shotwelli Olson and Rasmussen p. 287
2012Ocyplonessa shotwelli Zelenkov p. 526

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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
—Eucrocopoda
RankNameAuthor
—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
familyAnatidaeVigors 1825
subfamilyAnatinaeVigors 1825
tribeMerginiBonaparte 1838
genusOcyplonessa
speciesshotwelli

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.

†Ocyplonessa shotwelli Brodkorb 1961
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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: freshwatersubf
Locomotion: actively mobileo
Life habit: volantsubf
Diet: herbivoresubf
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 19:26:23
Modified: 2009-01-03 21:26:23
Source: subf = subfamily, o = order
References: Sedinger 1997, Marsh 1875

Age range: Clarendonian or 12.50000 to 9.40000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Clarendonian12.5 - 9.4USA (Oregon) Ocyplonessa shotwelli (18819 type locality: 18820)