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Hesperornis crassipes

Reptilia - Hesperornithiformes

Taxonomy
Lestornis crassipes was named by Marsh (1876). Its type specimen is YPM 1474, a partial skeleton, and it is a 3D body fossil. Its type locality is Lestornis crassipes type locality; Upper Cretaceous of western Kansas, which is in a Cretaceous marine horizon in Kansas.

It was recombined as Hesperornis crassipes by Marsh (1880), Zittel (1890), Hay (1902), Hay (1930), Wetmore (1940), Wetmore (1956), Martin (1984) and Kurochkin (2000).

Synonymy list
YearName and author
1876Lestornis crassipes Marsh
1880Hesperornis crassipes Marsh p. 196
1890Hesperornis crassipes Zittel p. 828
1902Hesperornis crassipes Hay p. 521
1930Hesperornis crassipes Hay p. 278
1940Hesperornis crassipes Wetmore p. 3
1956Hesperornis crassipes Wetmore p. 4
1984Hesperornis crassipes Martin p. 142
2000Hesperornis crassipes Kurochkin p. 544

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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
speciescrassipes()

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 crassipes Marsh 1876
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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, Bush and Bambach 2015, Marsh 1875

Age range: Late/Upper Cretaceous or 100.50000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Cretaceous100.5 - 66.0USA (Kansas) Lestornis crassipes (156589)