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Hesperornis rossicus

Reptilia - Hesperornithiformes

Taxonomy
Hesperornis rossica was named by Nessov and Yarkov (1993). Its type specimen is VPM 26306/2, a limb element (proximal portion of right tarsometatarsus), and it is a 3D body fossil. Its type locality is Rychkovo (right shore of Tzimlyanskoe Reservoir), which is in a Campanian marine horizon in the Russian Federation.

It was corrected as Hesperornis rossicus by Kurochkin (2000) and Rees and Lindgren (2005).

Synonymy list
YearName and author
1993Hesperornis rossica Nessov and Yarkov pp. 50-51 figs. Fig. 3a-g
2000Hesperornis rossicus Kurochkin p. 545
2005Hesperornis rossicus Rees and Lindgren p. 1322

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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
RankNameAuthor
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
classAves
—PygostyliaChiappe 2002
—Ornithothoraces
—OrnithuromorphaChiappe et al. 1999
subclassOrnithurae
orderHesperornithiformesFürbringer 1888
—Hesperornithidae()
genusHesperornis
speciesrossicus()

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.

†Hesperornis rossicus Nessov and Yarkov 1993
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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: marineo
Locomotion: actively mobileo
Life habit: aquaticg
Diet: piscivoreg
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-04 11:39:19
Modified: 2009-01-05 19:23:39
Source: g = genus, o = order
References: Padian 1985, Marsh 1875, Bush and Bambach 2015

Age range: base of the Early/Lower Campanian to the top of the Middle Campanian or 83.50000 to 70.60000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Campanian83.5 - 70.6Russian Federation (Volgograd) Hesperornis rossica (type locality: 85286)
Early/Lower Campanian83.5 - 70.6Russian Federation (Saratov) Hesperornis rossicus (141001)
Early/Lower Campanian83.5 - 70.6Sweden Hesperornis rossicus (102883)
Early/Lower Campanian - Middle Campanian83.5 - 70.6Canada (Manitoba) Hesperornis rossicus (193928)